Dahua Technology IPC-HDBW3841E-AS - Security Camera

IPC-HDBW3841E-AS - Security Camera Dahua Technology - Free user manual and instructions

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Product Type Network Security Camera
Model IPC-HDBW3841E-AS
Brand Dahua Technology
Resolution 8 MP (3840 x 2160)
Image Sensor 1/2.8" CMOS
Minimum Illumination 0.005 Lux (Color), 0 Lux (IR)
IR Distance Up to 30 m (IR LED)
Lens Type Motorized varifocal, 2.7–13.5 mm
Field of View Horizontal: 100°–31°
Video Compression H.265+, H.265, H.264+, H.264, MJPEG
Day/Night ICR auto switch
Wide Dynamic Range 120 dB true WDR
Intelligent Features IVS (tripwire, intrusion), face detection, ANPR, people counting, heat map, crowd map
Audio 1 input, 1 output, two-way audio
Alarm I/O 2 input, 1 output
Storage Micro SD slot (up to 256 GB), NAS, FTP
Network 10/100 Mbps Ethernet, ONVIF, CGI, P2P
Power Supply PoE (802.3af) or DC 12V
Power Consumption < 12.5 W
Housing Metal, IP67, IK10
Dimensions (Dia. x H) Φ151 mm x 119 mm
Weight 1.1 kg (2.2 lb)
Operating Temperature -30°C to +60°C
Maintenance & Cleaning Clean dome with soft dry cloth; use mild detergent for stubborn stains; avoid volatile solvents
Repairability Desiccant replacement; qualified service for disassembly; spare parts available from manufacturer

Frequently Asked Questions - IPC-HDBW3841E-AS Dahua Technology

How do I reset the admin password if I forget it?
On the login page, click 'Forgot password?' and follow the instructions. A security code will be sent to the email address you set during initialization. Use it to reset the password within 24 hours.
What is the default IP address of the camera?
The default IP address is 192.168.1.108. Ensure your computer is on the same network segment to access the web interface.
Can I use the camera outdoors?
Yes, the camera has an IP67 weatherproof rating and IK10 vandal resistance, making it suitable for outdoor surveillance.
How do I set up motion detection?
Go to Setting > Event > Video Detection > Motion Detection. Enable the function, draw detection areas, and configure alarm linkage actions such as recording, email, or PTZ.
Does the camera support audio recording?
Yes, it has one audio input and one audio output. You can enable audio in live view or configure audio recording in the video settings. Two-way talk is also supported.
What storage options are available?
The camera supports micro SD cards up to 256 GB, network storage via NAS, and FTP upload. You can also record to a local computer or NVR.
How do I enable face recognition?
First, create a face database in Setting > Event > Face Recognition > Face Database. Then enable face detection, and the camera will compare detected faces against the database and trigger alarms.
What is the maximum resolution for video streaming?
The camera can stream up to 8 MP (3840 x 2160) at 20 fps for the main stream. Sub streams are available at lower resolutions.
How do I clean the camera lens?
Use a soft dry cloth or a lens cleaning pen. For stubborn dirt, slightly moisten a cloth with alcohol or mild detergent, wipe gently, and dry with a clean cloth. Avoid abrasive materials.
Can I view the camera remotely via smartphone?
Yes, download the Easy4ip app (available for iOS and Android). During initialization, you can register the camera to Easy4ip for cloud access. Alternatively, use the P2P function or port forwarding.

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Download the instructions for your Security Camera in PDF format for free! Find your manual IPC-HDBW3841E-AS - Dahua Technology and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. IPC-HDBW3841E-AS by Dahua Technology.

USER MANUAL IPC-HDBW3841E-AS Dahua Technology

Network Camera Web 3.0

Operation Manual

Dahua Technology IPC-HDBW3841E-AS - Operation Manual - 1

natural_image Abstract geometric composition with gray and red color blocks (no text or symbols)

Foreword

General

This manual introduces the functions, configuration, general operation, and system maintenance of network camera.

Safety Instructions

The following signal words might appear in the manual.

Signal WordsMeaning
Dahua Technology IPC-HDBW3841E-AS - Safety Instructions - 1WARNINGIndicates a medium or low potential hazard which, if not avoided, could result in slight or moderate injury.
Dahua Technology IPC-HDBW3841E-AS - Safety Instructions - 2CAUTIONIndicates a potential risk which, if not avoided, may result in property damage, data loss, lower performance, or unpredictable result.
Dahua Technology IPC-HDBW3841E-AS - Safety Instructions - 3TIPSProvides methods to help you solve a problem or save you time.
Dahua Technology IPC-HDBW3841E-AS - Safety Instructions - 4NOTEProvides additional information as a supplement to the text.

Revision History

VersionRevision ContentRelease Time
V2.1.4Updated the information of alarm audio.June 2022
V2.1.3Updated the description of encode bar.November 2021
V2.1.2Updated "4.2.4.1 Adjustment".Updated "4.5.1.1.1 Interface Layout".Updated "4.5.1.1.2 Picture".Updated "4.5.1.1.11 Image Correction".Updated "4.5.1.4 Splicing".Updated "4.5.2.1 Video".Updated "4.8.2 Date & Time".September 2021
V2.1.1Updated "4.8.3.2 Adding User Group".Updated "5.18 Setting Relay-in".July 2021
V2.1.0Updated "5.7 Setting Smart Plan"July 2021
V2.0.9Updated "4.5.2.1 Video".May 2021
V2.0.8Updated "4.5.2.3.1 Configuring Privacy Masking".Updated "4.7.3.3 FTP".Updated "4.8.3.1 Adding a User" and "4.8.3.3 ONVIF User".Updated "5.4.2 Setting Video Tampering".Updated "5.11 Setting Face Detection".Updated "5.15 Setting Stereo Analysis".Updated "5.19.5 Setting Security Exception".December 2020
V2.0.7Modify "5.1.1.7 Warning Light Linkage".Add "4.6.12 5G".Modify "4.7.3.2 Local".July 2020
V2.0.6Added "4.5.2.3.11 Configuring GPS Position".Updated "5.2 Setting Smart Track".July 2020
V2.0.5Updated "4.5.1.1.8 Illuminator".Updated "4.7.3.2 Local".Added "5.19.6 Setting Disarming".June 2020
V2.0.4Updated "4.5.1.4 Splicing".Updated "5.14 Setting Vehicle Density".Updated "5.12 Setting People Counting".May 2020
V2.0.3Added note in "4.7.3.2 Local".May 2020
V2.0.2Modified the contents of "5.16 Setting ANPR".Added modeling in "5.11 Setting Face Detection".December 2019
V2.0.1Added "5.5 Setting Smart Motion Detection".August 2019
V2.0.0Consolidated the outline, and added baseline and safety contents, and some intelligent functions such as face recognition and ANPR.Deleted some old function such as stereo vision.July 2019
V1.0.4Updated the chapters of "5.12 Setting People Counting" and "5.13.1 Heat Map".Add VR mode of Fisheye device.Add video metadata function.March 2019
V1.0.3Added Stereo Analysis function.November 2018
V1.0.2Added chapters of "3 Device Initialization". and "Stereo vision"."Updated the chapters of "4.8.3 Account", and "4.6.7 SNMP".October 2017
V1.0.1First release.September 2016

Privacy Protection Notice

As the device user or data controller, you might collect the personal data of others such as their face, fingerprints, and license plate number. You need to be in compliance with your local privacy protection laws and regulations to protect the legitimate rights and interests of other people by implementing measures which include but are not limited: Providing clear and visible identification to inform people of the existence of the surveillance area and provide required contact information.

About the Manual

  • The manual is for reference only. Slight differences might be found between the manual and the product.
  • We are not liable for losses incurred due to operating the product in ways that are not in compliance with the manual.

  • The manual will be updated according to the latest laws and regulations of related jurisdictions. For detailed information, see the paper user's manual, use our CD-ROM, scan the QR code or visit our official website. The manual is for reference only. Slight differences might be found between the electronic version and the paper version.

  • All designs and software are subject to change without prior written notice. Product updates might result in some differences appearing between the actual product and the manual. Please contact customer service for the latest program and supplementary documentation.
  • There might be errors in the print or deviations in the description of the functions, operations and technical data. If there is any doubt or dispute, we reserve the right of final explanation.
  • Upgrade the reader software or try other mainstream reader software if the manual (in PDF format) cannot be opened.
  • All trademarks, registered trademarks and company names in the manual are properties of their respective owners.
  • Please visit our website, contact the supplier or customer service if any problems occur while using the device.
  • If there is any uncertainty or controversy, we reserve the right of final explanation.

Important Safeguards and Warnings

This section introduces content covering the proper handling of the device, hazard prevention, and prevention of property damage. Read carefully before using the device, comply with the guidelines when using it.

Transportation Requirements

Dahua Technology IPC-HDBW3841E-AS - Transportation Requirements - 1

  • Transport the device under allowed humidity and temperature conditions.
  • Pack the device with packaging provided by its manufacturer or packaging of the same quality before transporting it.
  • Do not place heavy stress on the device, violently vibrate or immerse it in liquid during transportation.

Storage Requirements

Dahua Technology IPC-HDBW3841E-AS - Storage Requirements - 1

  • Store the device under allowed humidity and temperature conditions.
  • Do not place the device in a humid, dusty, extremely hot or cold site that has strong electromagnetic radiation or unstable illumination.
  • Do not place heavy stress on the device, violently vibrate or immerse it in liquid during storage.

Installation Requirements

Dahua Technology IPC-HDBW3841E-AS - Installation Requirements - 1

WARNING

  • Strictly comply with the local electrical safety code and standards, and check whether the power supply is correct before operating the device.
  • Please follow the electrical requirements to power the device.

When selecting the power adapter, the power supply must conform to the requirements of ES1 in IEC 62368-1 standard and be no higher than PS2. Please note that the power supply requirements are subject to the device label.

- We recommend using the power adapter provided with the device.

  • Do not connect the device to two or more kinds of power supplies, unless otherwise specified, to avoid damage to the device.
  • The device must be installed in a location that only professionals can access, to avoid the risk of non-professionals becoming injured from accessing the area while the device is working. Professionals must have full knowledge of the safeguards and warnings of using the device.

Dahua Technology IPC-HDBW3841E-AS - WARNING - 1

  • Do not place heavy stress on the device, violently vibrate or immerse it in liquid during installation.
  • An emergency disconnect device must be installed during installation and wiring at a readily accessible location for emergency power cut-off.
  • We recommend you use the device with a lightning protection device for stronger protection

against lightning. For outdoor scenarios, strictly comply with the lightning protection regulations.

- Ground the function earthing portion ⏻ of the device to improve its reliability (certain models are not equipped with earthing holes). The device is a class I electrical appliance. Make sure that the power supply of the device is connected to a power socket with protective earthing.

- The dome cover is an optical component. Do not directly touch or wipe the surface of the cover during installation.

Operation Requirements

Dahua Technology IPC-HDBW3841E-AS - Operation Requirements - 1

WARNING

- The cover must not be opened while the device is powered on.

- Do not touch the heat dissipation component of the device to avoid the risk of getting burnt.

Dahua Technology IPC-HDBW3841E-AS - WARNING - 1

- Use the device under allowed humidity and temperature conditions.

- Do not aim the device at strong light sources (such as lamplight, and sunlight) when focusing it, to avoid reducing the lifespan of the CMOS sensor, and causing overbrightness and flickering.

- When using a laser beam device, avoid exposing the device surface to laser beam radiation.

- Prevent liquid from flowing into the device to avoid damage to its internal components.

- Protect indoor devices from rain and dampness to avoid electric shocks and fires breaking out.

- Do not block the ventilation opening near the device to avoid heat accumulation.

- Protect the line cord and wires from being walked on or squeezed particularly at plugs, power sockets, and the point where they exit from the device.

- Do not directly touch the photosensitive CMOS. Use an air blower to clean the dust or dirt on the lens.

- The dome cover is an optical component. Do not directly touch or wipe the surface of the cover when using it.

- There might be a risk of electrostatic discharge on the dome cover. Power off the device when installing the cover after the camera finishes adjustment. Do not directly touch the cover and make sure the cover is not exposed to other equipment or human bodies

- Strengthen the protection of the network, device data and personal information. All necessary safety measures to ensure the network security of the device must be taken, such as using strong passwords, regularly changing your password, updating firmware to the latest version, and isolating computer networks. For the IPC firmware of some previous versions, the ONVIF password will not be automatically synchronized after the main password of the system has been changed. You need to update the firmware or change the password manually.

Maintenance Requirements

Dahua Technology IPC-HDBW3841E-AS - Maintenance Requirements - 1

- Strictly follow the instructions to disassemble the device. Non-professionals dismantling the device can result in it leaking water or producing poor quality images. For a device that is required to be disassembled before use, make sure the seal ring is flat and in the seal groove when putting the cover back on. When you find condensed water forming on the lens or the desiccant becomes green after you disassembled the device, contact after-sales service to replace the desiccant. Desiccants might not be provided depending on the actual model.

  • Use the accessories suggested by the manufacturer. Installation and maintenance must be performed by qualified professionals.
  • Do not directly touch the photosensitive CMOS. Use an air blower to clean the dust or dirt on the lens. When it is necessary to clean the device, slightly wet a soft cloth with alcohol, and gently wipe away the dirt.
  • Clean the device body with a soft dry cloth. If there are any stubborn stains, clean them away with a soft cloth dipped in a neutral detergent, and then wipe the surface dry. Do not use volatile solvents such as ethyl alcohol, benzene, diluent, or abrasive detergents on the device to avoid damaging the coating and degrading the performance of the device.
  • The dome cover is an optical component. When it is contaminated with dust, grease, or fingerprints, use degreasing cotton moistened with a little ether or a clean soft cloth dipped in water to gently wipe it clean. An air gun is useful for blowing dust away.
  • It is normal for a camera made of stainless steel to develop rust on its surface after being used in a strong corrosive environment (such as the seaside, and chemical plants). Use an abrasive soft cloth moistened with a little acid solution (vinegar is recommended) to gently wipe it away. Afterwards, wipe it dry.

Table of Contents

Foreword....I

Important Safeguards and Warnings....IV

1 Overview .... 1

1.1 Introduction....1
1.2 Network Connection .... 1
1.3 Function....1

1.3.1 Basic Function....1
1.3.2 Intelligent Function....2

2 Configuration Flow .... 5

3 Device Initialization....6

4 Basic Configuration....9

4.1 Login....9
4.2 Live....10

4.2.1 Live Interface 10
4.2.2 Encode Bar 11
4.2.3 Live View Function Bar ....11
4.2.4 Window Adjustment Bar....14

4.2.4.1 Adjustment....14
4.2.4.2 Zoom and Focus....17
4.2.4.3 Fisheye 18

4.3 PTZ Operation....22

4.3.1 Configuring External PTZ Protocol....22
4.3.2 Configuring PTZ Function....22

4.3.2.1 Preset....22
4.3.2.2 Tour....23
4.3.2.3 Scan 24
4.3.2.4 Pattern....25
4.3.2.5 Pan 26
4.3.2.6 PTZ Speed....27
4.3.2.7 Idle Motion....27
4.3.2.8 PowerUp....28
4.3.2.9 PTZ Limit 29
4.3.2.10 Time Task....29
4.3.2.11 PTZ Restart 30
4.3.2.12 Default 31

4.3.3 Calling PTZ....32

4.3.3.1 PTZ Control....32
4.3.3.2 PTZ Function....34

4.4 Playback....34

4.4.1 Playback Interface....35
4.4.2 Playing back Video or Picture....37
4.4.3 Clipping Video .... 39
4.4.4 Downloading Video or Picture....40

4.4.4.1 Downloading a Single File ....40
4.4.4.2 Downloading Files in Batches 40

4.5 Camera 41

4.5.1 Camera Conditions....41

4.5.1.1 Conditions....41

4.5.1.1.1 Interface Layout....41
4.5.1.1.2 Picture....42
4.5.1.1.3 Exposure....44
4.5.1.1.4 Backlight....46
4.5.1.1.5 WB....47
4.5.1.1.6 Day & Night 48
4.5.1.1.7 Zoom and Focus 49
4.5.1.1.8 Illuminator 50
4.5.1.1.9 Defog....51
4.5.1.1.10 Fisheye....52
4.5.1.1.11 Image Correction....53
4.5.1.1.12 Splicing Mode ....54

4.5.1.2 Profile Management....54
4.5.1.3 Zoom and Focus....55
4.5.1.4 Splicing ....55

4.5.2 Setting Video Parameters....56

4.5.2.1 Video....56
4.5.2.2 Snapshot 59
4.5.2.3 Overlay 60

4.5.2.3.1 Configuring Privacy Masking ....60
4.5.2.3.2 Configuring Channel Title 62
4.5.2.3.3 Configuring Time Title....63
4.5.2.3.4 Configuring Text Overlay....64
4.5.2.3.5 Configuring Font Attribute ....64
4.5.2.3.6 Configuring Picture Overlay....65

4.5.2.3.7 Configuring Custom Overlay....66
4.5.2.3.8 Configuring OSD Info....66
4.5.2.3.9 Configuring Counting....67
4.5.2.3.10 Configuring Structured Statistics....68
4.5.2.3.11 Configuring GPS Position....68
4.5.2.3.12 Configuring Ranging ....69
4.5.2.3.13 Configuring ANPR 70
4.5.2.3.14 Configuring Face Statistics....70

4.5.2.4 ROI....71

4.5.2.5 Path....72

4.5.3 Audio....73

4.5.3.1 Configuring Audio Parameter....73
4.5.3.2 Configuring Alarm Audio....74

4.6 Network....74

4.6.1 TCP/IP 75
4.6.2 Port....77
4.6.3 PPPoE....79
4.6.4 DDNS....80
4.6.5 SMTP (Email) 81
4.6.6 UPnP....84
4.6.7 SNMP 85
4.6.8 Bonjour....88
4.6.9 Multicast 88
4.6.10 802.1x 89
4.6.11 QoS....90
4.6.12 5G....90

4.6.12.1 Dialing Setting....90
4.6.12.2 Mobile Setting 92

4.6.13 Access Platform 92

4.6.13.1 P2P....92
4.6.13.2 ONVIF 93
4.6.13.3 RTMP....94

4.7 Storage....95

4.7.1 Setting Storage Plan 95
4.7.2 Setting Schedule....95
4.7.3 Setting Destination....96

4.7.3.1 Path....96
4.7.3.2 Local 97

4.7.3.3 FTP....98
4.7.3.4 NAS 100

4.8 System....101

4.8.1 General 101
4.8.2 Date & Time....102
4.8.3 Account 103

4.8.3.1 Adding a User 103
4.8.3.2 Adding User Group 108
4.8.3.3 ONVIF User 110

4.8.4 Safety....113

4.8.4.1 System Service 113
4.8.4.2 HTTPS....114
4.8.4.3 Firewall....118

4.8.5 Peripheral 120

4.8.5.1 Serial Port Settings....120
4.8.5.2 External Light....121
4.8.5.3 Wiper....122

5 Event 124

5.1 Setting Alarm Linkage 124

5.1.1 Alarm Linkage 124

5.1.1.1 Setting Period....125
5.1.1.2 Record Linkage 125

5.1.1.2.1 Setting Record Plan....126
5.1.1.2.2 Setting Record Control....127
5.1.1.2.3 Setting Record Linkage 127

5.1.1.3 Snapshot Linkage 128

5.1.1.3.1 Setting Snapshot Plan 128
5.1.1.3.2 Setting Snapshot Linkage....129

5.1.1.4 Relay-out Linkage 129

5.1.1.5 Email Linkage....129
5.1.1.6 PTZ Linkage 130
5.1.1.7 Warning Light Linkage....130
5.1.1.8 Audio Linkage....130

5.1.2 Subscribing Alarm.... 131

5.1.2.1 About Alarm Types 131
5.1.2.2 Subscribing Alarm Information 131

5.2 Setting Smart Track....132

5.2.1 Setting Calibration Parameters for Smart Track....132

5.2.2 Enabling Alarm Track....134

5.3 Setting Panoramic Calibration 135

5.4 Setting Video Detection .... 137

5.4.1 Setting Motion Detection....137

5.4.2 Setting Video Tampering....139

5.4.3 Setting Scene Changing....140

5.5 Setting Smart Motion Detection....141

5.6 Setting Audio Detection 142

5.7 Setting Smart Plan 144

5.7.1 Basic Smart Plan....144

5.7.2 Schedule 145

5.8 Setting IVS 147

5.8.1 Global Configuration....147

5.8.2 Rule Configuration....149

5.9 Setting Crowd Map 153

5.9.1 Global Configuration....153

5.9.2 Rule Configuration....154

5.10 Setting Face Recognition....157

5.10.1 Setting Face Detection....157

5.10.2 Setting Face Database....159

5.10.2.1 Creating Face Database....159

5.10.2.2 Adding Face Picture....161

5.10.2.2.1 Single Adding....161

5.10.2.2.2 Batch Importing 163

5.10.2.3 Managing Face Picture....165

5.10.2.3.1 Modifying Face Information 165

5.10.2.3.2 Deleting Face Picture 166

5.10.2.4 Face Modeling 166

5.10.3 Setting Face Recognition Alarm Linkage....168

5.10.4 Viewing Face Recognition Result....168

5.10.4.1 Viewing Result in the Live Interface 168

5.10.4.2 Viewing Result by Search Function....169

5.11 Setting Face Detection 170

5.12 Setting People Counting 173

5.12.1 People Counting 173

5.12.2 Calibration Configuration....177

5.12.3 Queuing....178

5.12.4 Viewing People Counting Diagram 180

5.12.5 Viewing People Counting Report .... 181

5.13 Setting Heat Map....183

5.13.1 Heat Map....183

5.13.2 Viewing Heat Map Report....183

5.14 Setting Vehicle Density 184

5.15 Setting Stereo Analysis....187

5.15.1 Setting Rules for Stereo Analysis 187

5.15.2 Calibration Configuration....192

5.15.3 Zoom Calibration....192

5.15.4 Viewing Report....193

5.16 Setting ANPR....194

5.16.1 Scene Configuration....194

5.16.2 Setting Picture Overlay....196

5.16.3 Viewing ANPR Report 196

5.17 Setting Video Metadata....197

5.17.1 Scene Configuration....197

5.17.2 Setting Picture Information....200

5.17.3 Viewing Video Metadata Report 201

5.18 Setting Relay-in 201

5.18.1 Relay-in (1) 201

5.18.2 Relay-in (2) 202

5.19 Setting Abnormality....203

5.19.1 Setting SD Card....203

5.19.2 Setting Network....204

5.19.3 Setting Illegal Access 205

5.19.4 Setting Voltage Detection....205

5.19.5 Setting Security Exception....206

5.19.6 Setting Disarming....207

6 Maintenance....209

6.1 Requirements....209

6.2 Auto Maintain 209

6.3 Resetting Password....209

6.4 Backup and Default....212

6.4.1 Import/Export......212

6.4.2 Default 212

6.5 Upgrade....213

6.6 Information 213

6.6.1 Version....214

6.6.2 Log 214

6.6.3 Remote Log 215

6.6.4 Online User 215

Appendix 1 Cybersecurity Recommendations....217

1 Overview

1.1 Introduction

IP camera (Internet Protocol camera), is a type of digital video camera that receives control data and sends image data through internet. They are commonly used for surveillance, requiring no local recording device, but only a local area network.

IP camera is divided into single-channel camera and multi-channel camera according to the channel quantity. For multi-channel camera, you can set the parameters for each channel.

1.2 Network Connection

In the general IPC network topology, IPC is connected to PC through network switch or router.

Figure 1-1 General IPC network
Dahua Technology IPC-HDBW3841E-AS - Network Connection - 1

flowchart
graph TD
    A["Security Camera"] -->|or| B["IPC"]
    B -->|Cable| C["Switch or Router"]
    C -->|Cable| D["Computer"]
    C -->|Switch or Router| E["PC"]

Get IP address by searching on ConfigTool, and then you can start accessing IPC through network.

1.3 Function

Functions might vary with different devices.

1.3.1 Basic Function

Real-time Monitoring

  • Live view.
  • When live viewing the image, you can enable audio, voice talk and connect monitoring center for quick processing on the abnormality.
  • Adjust the image to the proper position by PTZ.
  • Snapshot and triple snapshot abnormality of the monitoring image for subsequent view and processing.

  • Record abnormality of monitoring image for subsequent view and processing.

  • Configure coding parameters, and adjust live view image.

Record

• Auto record as schedule.
- Play back recorded video and picture as needed.
- Download recorded video and picture.
- Alarm linked recording.

Account

  • Add, modify and delete user group, and manage user authorities according to user group.
  • Add, modify and delete user, and configure user authorities.
  • Modify user password.

1.3.2 Intelligent Function

Alarm

  • Set alarm prompt mode and tone according to alarm type.
    • View alarm prompt message.

Smart Track

  • Set calibration and parameters for smart track and enable alarm track.
  • Switch between smart track and speed dome auto track.

Video Detection

  • Motion detection, video tampering detection and scene changing detection.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Smart Motion Detection

  • Avoid the alarms triggered by the environment changes.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Audio Detection

• Audio input abnormal detection and intensity change detection.
- When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

IVS

  • Tripwire, intrusion, abandoned object, moving object, fast moving, parking detection, people gathering, and loitering detection.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, and snapshot.

Crowd Map

• View crowd distribution in real time for the timely arm to avoid accidents like stampede.
- When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Face Detection

  • Detect face and display the related attributes on the live interface.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Face Recognition

  • After detecting face, make comparison between the detected face with the face in face database, and activates alarm output.
  • Query the recognition result.

People Counting

  • Count the people flow in/out the detection area, and generate report.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Heat Map

  • Count cumulative density of moving objects.
    • View report of heat map.

Vehicle Density

• Supports traffic congestion detection and parking upper limit detection.
• View the statistic data on the live interface.
- When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, and snapshot.

Stereo Analysis

  • Include Activation Analysis, Back Detection, Fall Detection, Walking Detection, Blackboard Writing Detection, Violence Detection, People No. Error, Stand Detection, Running Detection, People Approaching Detection, and Strand Detection.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

ANPR

  • Recognize plate number in detection area, and display the related information on live interface.
  • When an alarm is triggered, the system links alarm output and snapshot.

Video Metadata

  • Snap people, non-motor vehicle and vehicle, and display the related information on the live interface.
  • When an alarm is triggered, the system links alarm output.

Alarm Setting

  • The alarm is triggered when an external alarm input device inputs alarm.
  • When an alarm is triggered, the system performs linkages such as recording, alarm output, sending email, PTZ operation, and snapshot.

Abnormality

  • SD card error, network disconnection, illegal access, voltage detection and security exception.
  • When SD card error or illegal access is triggered, the system links alarm output and sending email.
  • When network disconnection alarm is triggered, the system links recording and alarm output.
  • When the input voltage is more or less than the rated voltage, the alarm is triggered and the system links sending email.

2 Configuration Flow

For the device configuration flow, see Figure 2-1. For details, see Table 2-1. Configure the device according to the actual situation.

Figure 2-1 Configuration flow
Dahua Technology IPC-HDBW3841E-AS - Configuration Flow - 1

flowchart
graph TD
    A["Login"] --> B{Initialized?}
    B -->|No| C["Initialize"]
    B -->|Yes| D["Configure basic parameters"]
    D --> E["Configure intelligent event"]
    E --> F["Set detection parameters (such as video detection and IVS)"]
    E --> G["Subscribe Alarm"]
    C --> H["Set IP address"]
    C --> I["Set system time"]
    C --> J["Set image parameters"]

Table 2-1 Description of flow

ConfigurationDescriptionReference
LoginOpen IE browser and enter IP address to log in to the web interface, The camera IP address is 192.168.1.108 by default."4.1 Login"
InitializationInitialize the camera when you use it for the first time."3 Device Initialization"
Basic parametersIP addressModify IP address according to network planning for the first use or during network adjustment."4.6.1 TCP/IP"
Date & timeSet date and time to ensure the recording time is correct."4.8.2 Date & Time"
Image parametersAdjust image parameters according to the actual situation to ensure the image quality."4.5.1 Camera Conditions"
Intelligent EventDetection rulesConfigure the necessary detection rules, such as video detection and IVS."5 Event"
Subscribe alarmSubscribe alarm event. When the subscribed alarm is triggered, the system will record the alarm on the alarm tab."5.1.2 Subscribing Alarm"

3 Device Initialization

Device initialization is required for the first use. This manual is based on the operation on the web interface. You can also initialize device through ConfigTool, NVR, or platform devices.

Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 1

  • To ensure the device safety, keep the password properly after initialization and change the password regularly.
  • When initializing device, keep the PC IP and device IP in the same network.

Step 1 Open IE browser, enter the IP address of the device in the address bar, and then press Enter key.

Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 2

The IP is 192.168.1.108 by default.

Figure 3-1 Device initialization
Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 3

text_image Device Initialization Username admin Password The minimum pass phrase length is 8 characters Weak Middle Strong Confirm Password Use a password that has 8 to 32 characters, it can be a combination of letter(s), number(s) and symbol(s) with at least two kinds of them. (please do not use special symbols like ".. & ) ✓ Email Address To reset password, please input properly or update in time Save

Step 2 Set the password for admin account.

Table 3-1 Description of password configuration

ParameterDescription
Username The default username is admin.
PasswordThe password must consist of 8 to 32 non-blank characters and contain at least two types of characters among upper case, lower case, number, and special character (excluding '' ; : &). Set a high security level password according to the password security notice.
Confirm password
emailEnter an email address for password reset, and it is selected by default.When you need to reset the password of the admin account, a security code for password resetting will be sent to the reserved email address.

Step 3 Click Save.

Figure 3-2 End-user license agreement
Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 4

text_image End-User License Agreement Zhejiang Dahua Technologies Co.,Ltd. Software End User License Agreement 1. NOTICE IMPORTANT NOTICE. PLEASE READ CAREFULLY: This Zhejiang Dahua Technology Co. LTD (Dahua) License Agreement ('Agreement') sets forth the terms and conditions under which You are licensed to use the Software. By installing, copying, downloading the Software or using the same by any other means, you are deemed to have accepted this Agreement. If you do not agree with it in whole or in part, you do not have the right to use this Software, in which case you should immediately stop installing, copying the Software or using the same by any other means. 2. DEFINITIONS 'Software' means information management program(s) or supporting document(s) consisting of several modules or functions. Supporting document(s) includes all or part of the source codes and object codes of the Software, as well as the images, photographs, icons, animations, audio, video, music, words and codes incorporated therein; it also includes all relevant paper or electronic information and technical documentation which describe the functions, characteristics, contents, quality, tests, customer manuals, user agreements, etc. ('Software Product or 'Software') I have read and agree to all terms Next

Step 4 Select the I have read and agree to all terms checkbox, and then click Next.

Figure 3-3 Easy4ip
Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 5

text_image Easy4ip ✓ Easy4ip Register device to EASY4IP and then suitable for user to apply for cloud account. It can realize cloud service such as remote surveillance, device record, alarm, cloud storage, using device to manage cloud. Please scan the QR code on the actual interface. Scan and Download EASY4IP APP Next

Step 5 You can register the camera to Easy4ip, select the checkbox as needed, and then click Next.

Figure 3-4 Online upgrade
Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 6

text_image Online Upgrade ✓ Auto-check for updates Notify automatically when updates available. The system checks for updates every day. Online Upgrade is a service that provides you with firmware updates by cloud. This service will collect device information in order to inform you about available firmware updates. Such information may include your device name, firmware version and device identification numbers. Such information is processed for the sole purpose of informing you about firmware updates. Save

Step 6 Select the upgrading method as needed.

If you select Auto-check for updates, the system checks new version once a day automatically. There will be system notice on Upgrade interface and Version interface if any new version is available.

Dahua Technology IPC-HDBW3841E-AS - Device Initialization - 7

Select Setting > System > Upgrade > Online Upgrade, and you can enable the auto-check function.

Step 7 Click Save.

4 Basic Configuration

The chapter introduces the basic configuration, including login, live view, PTZ operation, playback, camera configuration, network configuration, storage configuration and system configuration.

4.1 Login

This section introduces how to log in to and log out of the web interface. This section takes IE Explorer 9 as an example.

Dahua Technology IPC-HDBW3841E-AS - Login - 1

  • You need to initialize the camera before logging in to the web interface. For details, see "3 Device Initialization".
  • When initializing the camera, keep the PC IP and device IP in the same network.
  • Follow the instruction to download and install the plug-in for the first login.

Procedure

Step 1 Open IE browser, enter the IP address of the camera (192.168.1.108 by default) in the address bar and press Enter.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image @Jhua TECHNOLOGY Username: Password: Forgot password? Login Cancel

Step 2 Enter the username and password.

The username is admin by default.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

Click Forget password?, and you can reset the password through the email address that is set during the initialization. For details, see "6.3 Resetting Password".

Step 3 Click Login.

Figure 4-2 Live
Dahua Technology IPC-HDBW3841E-AS - Procedure - 3

text_image Live Playback Setting Alarm Logout After Stream Sub Stream 1 Sub Stream 2 Protocol TCP 2019-09-02 10:55:18

• Live: Click Live, and you can view the real-time monitoring image.
- Playback: Click Playback, and you can play back or download recorded video or image files.
- Setting: Click Setting, and you can configure the basic and intelligent functions of the camera.
- For the camera with multiple channels, through selecting channel numbers, you can set the parameters of the channels.
- Alarm: Click, Alarm, and you can subscribe and view alarm information.
- Logout: Click Logout to go to login interface.
- The system will sleep automatically after idling for a period of time.

4.2 Live

This section introduces the layout of the interface and function configuration.

4.2.1 Live Interface

This section introduces system menu, encode bar, live view function bar, and window adjustment bar.

Log in and click the Live tab.

Dahua Technology IPC-HDBW3841E-AS - Live Interface - 1

The functions and interfaces of different models might vary.

Figure 4-3 Live
Dahua Technology IPC-HDBW3841E-AS - Live Interface - 2

text_image Air Drop Sub Stream 1 Sub Stream 2 Polish TCP 2019-09-02 10:55:18

Table 4-1 Description of function bar

No.FunctionDescription
1Encode barSets stream type and protocol.
2Live viewDisplays the real-time monitoring image.
3Live view function barFunctions and operations in live viewing.
4Window adjustment barAdjustment operations in live viewing.

4.2.2 Encode Bar

Figure 4-4 Encode bar
Dahua Technology IPC-HDBW3841E-AS - Encode Bar - 1

text_image Main Stream Sub Stream 1 Sub Stream 2 Protocol TCP
  • Main Stream: It has large bit stream value and image with high resolution, but also requires large bandwidth. This option can be used for storage and monitoring. For details, see "4.5.2.1 Video".
  • Sub Stream: It has small bit stream value and smooth image, and requires less bandwidth. This option is normally used to replace main stream when bandwidth is not enough. For details, see "4.5.2.1 Video".
  • Protocol: You can select the network transmission protocol as needed, and the options are TCP, UDP and Multicast.

Dahua Technology IPC-HDBW3841E-AS - Encode Bar - 2

Before selecting Multicast, make sure that you have set the Multicast parameters.

4.2.3 Live View Function Bar

For the live view function bar, see Table 4-2.

Table 4-2 Description of live view function bar

IconFunctionDescription
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 1Manual PositionManually position the tracking speed dome to the selected location of corresponding panoramic camera.Click the icon and click or select randomly on the image of panoramic camera channel, the tracking speed dome will automatically position the selected location.For multi-sensor panoramic network camera + PTZ camera, before enabling manual position, make sure that you have enabled alarm track and smart track calibration. For details, see "5.2 Setting Smart Track".For panoramic network camera, before enabling manual position, make sure that you have enabled panoramic linkage. For details, see "5.3 Setting Panoramic Calibration".
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 2Regional FocusSelect channel image of the tracking speed dome, click the icon and click or select randomly on the channel image of the tracking speed dome, and then the speed dome can realize auto focus upon the selected region.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 3WiperControls the wiper of the camera.Click the icon to enable or disable wiper function.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 4RangingClick the icon, select a point on the ground, and the distance between the camera and the selected point will be displayed.Before using this function, you need to set the installation of device first. For details, see "4.5.2.3.12 Configuring Ranging".
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 5GestureControls PTZ by operating the mouse on the live view of tracking speed dome.Select the live view of tracking speed dome, click the icon, press left-button and drag image to control PTZ. And you can zoom in or out the image through rolling mouse wheel.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 6Manual TrackClick the icon, and select tracking target on the live view of tracking speed dome, the camera tracks the selected target automatically.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 7Vehicle DensityClick the icon, and select an area on the live image, the camera will automatically count the number of the vehicles in the selected area, and display the number on the Live interface.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 8 Relay-outDisplays alarm output state. Click the icon to force to enable or disable alarm output.Alarm output state description:Red: Alarm output enabled.Grey: Alarm output disabled.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 9 Warning LightDisplays the warning light state.Click the icon to enable or disable the warning light forcibly.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 10 AlarmDisplays alarm sound state.Click the icon to enable or disable the alarm sound forcibly.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 11 Crowd MapClick the icon to display the crowd map on the Live interface.Only after enabling the function, can you see the icon on the Live interface.The positions of the icon might vary depending on models.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 12 Digital ZoomYou can zoom in or out video image through two operations.Click the icon, and then select an area in the video image to zoom in; right-click on the image to resume the original size. In zoom in state, drag the image to check other area.Click the icon, and then scroll the mouse wheel in the video image to zoom in or out.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 13 SnapshotClick the icon to capture one picture of the current image, and it will be saved to the configured storage path.About viewing or configuring storage path, see "4.5.2.5 Path".
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 14 Triple SnapshotClick the icon to capture three pictures of the current image, and they will be saved to the configured storage path.About viewing or configuring storage path, see "4.5.2.5 Path".
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 15 RecordClick the icon to record video, and it will be saved to the configured storage path.[IMAGE]About viewing or configuring storage path, see "4.5.2.5 Path".
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 16Easy FocusClick the icon, the AF Peak (focus eigenvalue) and AF Max (max focus eigenvalue) are displayed on the video image.AF Peak: The eigenvalue of image definition, it displays during focus.AF Max: The best eigenvalue of image definition.The smaller the difference between AF peak value and the AF max value, the better the focus is.[IMAGE]Easy focus closes automatically after five minutes.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 17 Audio Click the icon to enable or disable audio output.
Dahua Technology IPC-HDBW3841E-AS - Live View Function Bar - 18Talk Click the icon to enable or disable the audio talk.

4.2.4 Window Adjustment Bar

4.2.4.1 Adjustment

This section introduces the adjustment of image.

Table 4-3 Description of adjustment bar

IconFunctionDescription
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 1Image AdjustmentClick the icon, and then the Image Adjustment interface is displayed at the right side of the Live interface. You can adjust brightness, contrast, hue, and saturation.The adjustment is only available on the web interface, and it does not adjust the camera parameters.Brightness adjustment):Adjusts the overall image brightness, and change the value when the image is too bright or too dark. The bright and dark areas will have equal changes.Contrast adjustment): Change the value when the image brightness is proper but contrast is not enough.Hue adjustment): Makes the color deeper or lighter. The default value is made by the light sensor, and it is recommended.Saturation adjustment): Adjusts the image saturation. This value does not change image brightness.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 2Original SizeClick the icon, and it changes toand then the video displays with original size; click,and the video displays with adapted size.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 3Full ScreenClick the icon to enter full screen mode; double-click or press Esc to exit.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 4Width: HeightClick the icon to resume original ratio or change ratio.
IconFunctionDescription
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 5 FluencyClick the icon to select the fluency from Realtime, Fluency and Normal.Realtime: Guarantees the real-time display of the image. When the bandwidth is not enough, the image might not be smooth.Fluency: Guarantees the fluency of the image. There might be delay between live view image and real-time image.Normal: It is between Realtime and Fluency.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 6 Rule InfoClick the icon, and then select Enable to display smart rules and detection box; select Disable to stop the display. It is enabled by default.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 7 PTZClick the icon, and the PTZ control panel is displayed at the right side of the Live interface. You can control and call PTZ function. For details, see"4.3.3 Calling PTZ".
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 8Zoom and FocusAdjust focal length to zoom in and out video image. Click the icon, and the Zoom and Focus configuration interface is displayed at the right side of the Live interface. You can control and call PTZ function. For details, see "4.2.4.2 Zoom and Focus".
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 9 FisheyeClick the icon, and then the Fisheye configuration interface is displayed at the right side of the Live interface. For details, see "4.2.4.3 Fisheye".
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 10FaceClick the icon, and the face detection or face recognition results are displayed on the Live interface.For face recognition, see "5.10.1 Setting Face Detection".For face detection: see "5.11 Setting Face Detection".
ANPRClick the icon, and the ANPR results are displayed on the Live interface. For details, see "5.16 Setting ANPR".
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 11 Video MetadataDahua Technology IPC-HDBW3841E-AS - Adjustment - 12Window LayoutClick the icon, the video metadata results are displayed on the Live interface. For details, see "5.17 Setting Video Metadata".When viewing the multi-channel image, you can select display layout. For Multi-Sensor Panoramic + PTZ Camera:The live interface will showPanorama 1 and Panorama 2 by default if you choose dual-channel mode.If you switch from three-channel mode or dual-channel mode to single-channel mode, the live window will show Panorama 1 by default. ClickPanorama 1 Panorama 2 PTZ Camerand select the camera you want to view.
Dahua Technology IPC-HDBW3841E-AS - Adjustment - 13Crowd MapClick the icon and select the Enable checkbox. The Crowd Map interface is displayed. For details, see"5.9 Setting Crowd Map".

4.2.4.2 Zoom and Focus

You can adjust focal length to zoom in or out video image and the image clarity.

Dahua Technology IPC-HDBW3841E-AS - Zoom and Focus - 1

The focus would adjust automatically after zooming in or out.

Figure 4-5 Zoom and focus
Dahua Technology IPC-HDBW3841E-AS - Zoom and Focus - 2

text_image Zoom and Focus Zoom Speed 20 - Zoom out Zoom in Focus Speed 20 - Near Far Auto Focus Restore All Refresh Regional Focus

Table 4-4 Description of zoom and focus

ParameterDescription
ZoomChanges the focal length of the camera to zoom in or out the image.1. Set the Speed value. The Speed is the adjustment range in one click. The larger the value is, the more the image would zoom in or out in one click.2. Click or hold + or- button, or drag the slider to adjust zoom.
FocusAdjusts the optical back focal length to make the image clearer.1. Set the Speed value. The Speed is the adjustment range in one click. The larger the value is, the more the adjustment in one click.2. Click or hold + or- button, or drag the slider to adjust focus.
Auto FocusAdjusts image clarity automatically.Do not make any other operation during auto focus process.
Restore AllRestores focus to default value and corrects errors.You can restore the focus if the image has poor clarity or has been zoomed too frequently.
Regional FocusFocus on the subject of a selected area.Click Regional Focus, and then select an area in the image, the camera performs auto focus in that area.
RefreshGet the latest zoom setting of the device.

4.2.4.3 Fisheye

You can select the installation mode, display mode and VR mode of fisheye devices as needed. For details, see Table 4-5.

• Install Mode: Select the installation mode according to the actual situation.
- Display Mode: Select the display mode of live view.
- VR Mode: Select VR mode to display images in stereo mode.

Figure 4-6 Fisheye
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 1

text_image Ceiling mount Wall mount Ground mount Install Mode Install Mode Install Mode Display Mode Display Mode Display Mode VR Mode VR Mode

Table 4-5 Description of fisheye configuration

ParameterDescription
Installation modeIncludes ceiling mount, wall mount, and ground mount.
Display modeThe display mode of the current image. There are different display modes for each installation mode.Ceiling: 1P+1, 2P, 1+2, 1+3, 1+4, 1P+6, 1+8.Wall: 1P, 1P+3, 1P+4, 1P+8.Ground: 1P+1, 2P, 1+3, 1+4, 1P+6, 1+8.The image will be on original size by default when switching installation mode.
Ceiling/Wall/Ground mountDahua Technology IPC-HDBW3841E-AS - Fisheye - 2Original imageThe original image before correction.
Ceiling/Ground mountDahua Technology IPC-HDBW3841E-AS - Fisheye - 31P+1360° rectangular panoramic image screen + independent sub-screens.You can zoom or drag the image in all the screens.You can move the start point (left and right) on rectangular panoramic image screen.
ParameterDescription
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 4 2PTwo associated 180^ rectangular image screens, and at any time, the two screens form a 360^ panoramic image. It is also called dual-panoramic image.You can move the start point (left and right) on the two rectangular panoramic image screens, and the two screens link each other.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 5 1+2Original image screen + two independent sub-screens. Ground Mount does not support this display mode.You can zoom or drag the image in all the screens.You can rotate the image on the original image screen to change the start point.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 6 1+3Original image screen + three independent sub-screens.You can zoom or drag the image in all the screens.You can rotate the image on the original image screen to change the start point.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 7 1+4Original image screen + four independent sub-screens.You can zoom or drag the image in all the screens.You can rotate the image on the original image screen to change the start point.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 8 1P+6 360^ rectangular panoramic screen + six independent sub-screens.You can zoom or drag the image in all the screens.You can move the start point (left and right) on rectangular panoramic image screen.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 9 1P+8Original image screen + eight independent sub-screens.You can zoom or drag the image in all the screens.You can rotate the image on the original image screen to change the start point.
Wall mount 1PDahua Technology IPC-HDBW3841E-AS - Fisheye - 10Dahua Technology IPC-HDBW3841E-AS - Fisheye - 11 180^ rectangular panoramic image screen (from left to right).You can drag the image in all the screens (up and down) to adjust the vertical view.180° rectangular panoramic image screen + three independent sub-screens.You can zoom or drag the image in all the screens.You can drag the image in all the screens (upper and lower) to adjust the vertical view.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 12180° rectangular panoramic image screen + four independent sub-screens.You can zoom or drag the image in all the screens.You can drag the image in all the screens (upper and lower) to adjust the vertical view.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 13180° rectangular panoramic image screen + eight independent sub-screens.You can zoom or drag the image in all the screens.You can drag the image in all the screens (upper and lower) to adjust the vertical view.
VR modeDahua Technology IPC-HDBW3841E-AS - Fisheye - 14PanoramaDrag or cross the screen 360° to unfold the distortion panorama, and you can drag the image in left/right direction.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 15Semi-circleYou can drag the image in upper/lower/left/right direction. Press I to display the panorama, and press O to resume the original size.Press S to rotate the image in anticlockwise direction, and press E to stop the rotation.Scroll the mouse wheel to zoom the image.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 16CylinderDisplay the distortion panorama in 360° circularity.You can drag the image in upper/lower/left/right direction. Press I to display the panorama, and press O to return to the original size.Press S to rotate the image in anticlockwise direction, and press E to stop the rotation.Scroll the mouse wheel to zoom the image.
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 17 AsteroidYou can drag the image in upper/lower/left/right direction. Press I to display the panorama, and press O to return to the original size.Press the left mouse-button to slide down to display the image on the plane surface.Scroll the mouse wheel to zoom the image.

4.3 PTZ Operation

This section introduces PTZ parameter configuration, PTZ control and PTZ function configuration.

4.3.1 Configuring External PTZ Protocol

You need to configure PTZ protocol when accessing external PTZ camera; otherwise the camera cannot control external PTZ camera.

Prerequisites

  • Access external PTZ through RS-485.
  • You have configured the parameters of serial port. For details, see "4.8.5.1 Serial Port Settings".

Procedure

Step 1 Select Setting > PTZ Setting > Protocol.

Figure 4-7 PTZ setting
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image PTZ Settings Protocol PELCOD Default Refresh Save

Step 2 Select the PTZ protocol.

Step 3 Click Save.

4.3.2 Configuring PTZ Function

4.3.2.1 Preset

Preset means a certain position that the camera can make quick orientation to. It includes PTZ pan and tilt angles, camera focus, and location.

Step 1 Select Setting > PTZ Settings > Function > Preset.

Figure 4-8 Preset
Dahua Technology IPC-HDBW3841E-AS - Preset - 1

text_image Function Preset Tour Scan Pattern Pan PTZ Speed Idle Motion PowerUp PTZ Limit Time Task PTZ Restart Default Number Preset Title Save Delete + Add Refresh Remove All Zoom + Focus + Iris + Speed 5

Step 2 Set the speed, and click ⚙️, ⏻ and ╒ to adjust the parameters of direction, zoom, focus and iris, to move the camera to the position you need.

Step 3 Click Add to add the current position to be a preset, and the preset is displayed in preset list.

Step 4 Double-click the preset title to edit it.

Step 5 Click 📋 to save the preset.

  • Click to delete the preset.
  • Click Remove All to remove all presets.

4.3.2.2 Tour

Tour means a series of movements that the camera makes along several presets.

Prerequisites

You have set several presets.

Step 1 Select Setting > PTZ settings > Function > Tour.

Figure 4-9 Tour
Dahua Technology IPC-HDBW3841E-AS - Prerequisites - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Tour Mode Se... Original Path Tour No. Tour Name Delete ▶ Start + Add ? Number Preset Duration(s) Speed Delete + Add Save Refresh Zoom + Focus + Iris + Speed 5

Step 2 Click Add ① to add tour.

Double-click the tour name to edit the name.

Step 3 Click Add ② to add preset.

Double-click the duration to set the duration.

Step 4 Select the tour mode.

  • Original path: The PTZ camera moves in the order of the selected presets.
  • Shortest path: The PTZ camera ranks presets by distance, and moves in the optimal path.

Step 5 Click Save.

Step 6 Click Start to start touring.

Dahua Technology IPC-HDBW3841E-AS - Prerequisites - 2

  • If you operate PTZ during tour, the camera will stop tour.
  • Click Stop to stop touring.

4.3.2.3 Scan

Scan means the camera moves horizontally at a certain speed between the configured left and right limits.

Step 1 Select Setting > PTZ settings > Function > Scan.

Figure 4-10 Scan
Dahua Technology IPC-HDBW3841E-AS - Scan - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Scan No. 1 Speed 5 ▶ Start ▼ Setup Set Left Limit Set Right Limit Zoom + Focus + Iris + Speed 5

Step 2 Select the scan number, and set the speed.

Step 3 Click Setup to set left limit and right limit.

1) Click Set Left Limit to set the current position to be the left limit.
2) Click Set Right Limit to set the current position to be the right limit.

Step 4 Click Start to start scanning.

Click Stop to stop scanning.

4.3.2.4 Pattern

Pattern means a recording of a series of operations that you make to the camera, and when pattern starts, the camera performs the operations repeatedly. The operations include horizontal and vertical movements, zoom and preset calling. Record and save the operations, and then you can call the pattern path directly.

Step 1 Select Setting > PTZ settings > Function > Pattern.

Figure 4-11 Pattern
Dahua Technology IPC-HDBW3841E-AS - Pattern - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Pattern No: 1 ▶ Start Setup Start Rec Stop Rec Zoom Focus Iris Speed 5

Step 2 Select the pattern number.

Step 3 Click Setup, and then click Start Rec. Adjust the parameters of direction, zoom, focus and iris according to the actual situation.

Step 4 Click Stop Rec to stop recording.

Step 5 Click Start to start patterning.

Step 6 Click Stop to stop patterning.

4.3.2.5 Pan

Enable Pan, the camera can realize continuous 360^ horizontal rotation at a certain speed.

Step 1 Select Setting > PTZ settings > Function > Pan.

Figure 4-12 Pan
Dahua Technology IPC-HDBW3841E-AS - Pan - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Pan Speed ▶ Start Zoom Focus Iris Speed 5

Step 2 Set the pan speed and click Start, and the camera starts horizontal rotation.

Click Stop to stop rotation.

4.3.2.6 PTZ Speed

PTZ speed means the rotation speed of the PTZ camera during touring, pattern, or auto tracking. Step 1 Select Setting > PTZ settings > Function > PTZ Speed.

Figure 4-13 PTZ speed
Dahua Technology IPC-HDBW3841E-AS - PTZ Speed - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default PTZ Speed Low Middle High Zoom + Focus + Iris + Speed 5

Step 2 Select the PTZ speed: Low, Middle, and High.
Dahua Technology IPC-HDBW3841E-AS - PTZ Speed - 2

Speed under the direction buttons refers to the rotation angle of the PTZ camera for each press of the direction button.

4.3.2.7 Idle Motion

Idle motion means that the PTZ camera implements the operation which is configured in advance when it does not receive any valid command within the set time.

Prerequisites

You have configured the PTZ motions, including preset, scan, tour, or pattern.

Procedure

Step 1 Select Setting > PTZ settings > Function > Idle Motion.

Figure 4-14 Idle motion
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Function Preset001 T43.05-15 13:39:55 ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Enable Idle Motion ● Preset ○ Tour ○ Scan ○ Pattern Number 1 : Preset001 Idle Time 10 minute(s) (1~60) Refresh Save Zoom + Focus + Iris + Speed 5

Step 2 Select the Enable check box to enable the idle motion function.
Step 3 Select the idle motion and set the idle time.

You need to select the corresponding number for some selected idle motions, such as Preset001.

Step 4 Click Save.

4.3.2.8 PowerUp

After setting Powerup motion, the camera will perform the configured motion after it is powered on.

Step 1 Select Setting > PTZ settings > Function > PowerUp.

Figure 4-15 PowerUp
Dahua Technology IPC-HDBW3841E-AS - PowerUp - 1

text_image Function 2019-05-18 16:43:37 ► Preset ► Tour ► Scan ► Pattern ► Pan ► PTZ Speed ► Idle Motion ► PowerUp ► PTZ Limit ► Time Task ► PTZ Restart ► Default Enable PowerUp ► Preset ○ Tour ○ Scan ○ Pattern ● Auto Refresh Save Speed 5 Zoom + Focus + Iris +

Step 2 Select the Enable check box to enable the power up function.

Step 3 Select the power up motion.

Dahua Technology IPC-HDBW3841E-AS - PowerUp - 2

When you select Auto, the system will perform the last motion that is executed for more than 20 s before power-off.

Step 4 Click OK.

4.3.2.9 PTZ Limit

After setting PTZ limit, the camera can only rotate within the configured area.

Step 1 Select Setting > PTZ settings > Function > PTZ Limit.

Figure 4-16 PTZ limit
Dahua Technology IPC-HDBW3841E-AS - PTZ Limit - 1

text_image Function ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Zoom Focus Iris Speed 5 Enable Up Line Setting Live Down Line Setting Live Please enable Coordinates at Overlay function to see PTZ Coordinates on video.

Step 2 Adjust the direction buttons, and then click Setting① to set the up line; click Setting② to set the down line.

Click Live to view the configured up line and down line.

Step 3 Select the Enable check box to enable the PTZ limit function.

4.3.2.10 Time Task

After setting time task, the camera performs the motions during the configured period.

Prerequisites

You have configured the PTZ motions, including preset, scan, tour, and pattern.

Procedure

Step 1 Select Setting > PTZ settings > Function > Time Task.

Figure 4-17 Time task
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Function P CSM001 26-53-05 12:17:05:41 ▶ Preset ▶ Tour ▶ Scan ▶ Pattern ▶ Pan ▶ PTZ Speed ▶ Idle Motion ▶ PowerUp ▶ PTZ Limit ▶ Time Task ▶ PTZ Restart ▶ Default Enable Time Task num 1 Clear All Task Set Time Task action Preset Tour Scan Pattern Action Number 1 : Preset001 AutoHome 30 s (5-3600) Period setting Copy To Task No. 1 Copy Refresh Save Zoom + Focus + Iris + Speed 5

Step 2 Select the Enable check box to enable time task function.

Step 3 Select the time task number.

Step 4 Select the time task action.

You need to select the corresponding action number for some selected time task actions.

Step 5 Set the auto home time in AutoHome.

AutoHome: When you call PTZ, the time task will be interrupted. After setting AutoHome time, the camera will resume the time task automatically.

Step 6 Click Period setting to set the time of the task, and then click Save.

For setting arm time, see "5.1.1.1 Setting Period".

Step 7 Click Save.

You can copy the configurations of existing task number to other task number.

  1. Select the existing task number in Time Task num.
  2. Select the task number to be configured in Copy To Task No.
  3. Click Copy.
  4. Click Save.

4.3.2.11 PTZ Restart

Step 1 Select Setting > PTZ settings > Function > PTZ Restart.

Figure 4-18 PTZ restart
Dahua Technology IPC-HDBW3841E-AS - PTZ Restart - 1

text_image Function Preset001 2019 05 18 17 33 64 PTZ Restart Zoom Focus Iris Speed 5

Step 2 Click PTZ Restart to restart PTZ.

4.3.2.12 Default

Dahua Technology IPC-HDBW3841E-AS - Default - 1

Be careful when doing this operation. It will restore the camera to default configuration, and result in data loss.

Step 1 Select Setting > PTZ settings > Function > Default.

Figure 4-19 Default
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text_image Function Preset001 2 5-18 18:45:45 Zoom + Focus + Iris + Speed 5 Default Preset Tour Scan Pattern Pan PTZ Speed Idle Motion PowerUp PTZ Limit Time Task PTZ Restart Default

Step 2 Click Default and the PTZ function is restored to default.

4.3.3 Calling PTZ

Click PTZ on Live interface, and the PTZ configuration panel is displayed. You can control PTZ and call PTZ function.

4.3.3.1 PTZ Control

You can rotate device, zoom image, and adjust iris through PTZ control or virtual joystick. See Figure 4-20 and Figure 4-21.

Figure 4-20 PTZ control
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text_image PTZ Control Joystick Speed(1-8): 5 Zoom + Focus + Iris +

Figure 4-21 Joystick
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text_image PTZ Control Joystick Speed(1-8): 5 Zoom + Focus + Iris +

- : Rotate PTZ direction through direction button. PTZ supports eight directions:

left/right/up/down/upper left/upper right/bottom left/bottom right. Click 🔒 and draw a box in the image, PTZ will rotate, focus and quickly position the defined scene.

Dahua Technology IPC-HDBW3841E-AS - PTZ Control - 3

- Rotate PTZ direction through joystick. Select and hold +, and drag it to the direction

that you need, then PTZ will move to the defined direction.

- Speed: Measure the rotation speed. The higher the speed value is, the faster the speed becomes.

- Zoom, focus and iris: Click - or + to adjust zoom, focus and iris.

4.3.3.2 PTZ Function

Select the PTZ function from the drop-down list to call the corresponding functions, including Scan, Preset, Tour, Pattern, Pan, Go to, Assistant and Light Wiper. See Figure 4-22. For details, see Table 4-6. Before calling PTZ function, see "4.3.2 Configuring PTZ Function" to configure PTZ function.

Dahua Technology IPC-HDBW3841E-AS - PTZ Function - 1

- If an external PTZ is connected to the camera, the configurations are valid only when the corresponding functions are available on the external PTZ.

- The range of PTZ function (such as preset and tour) depends on the PTZ protocol.

Figure 4-22 PTZ function
Dahua Technology IPC-HDBW3841E-AS - PTZ Function - 2

text_image PTZ Function Scan 1 1~5 ► Start ■ Stop

Table 4-6 Description of PTZ function

ParameterDescription
ScanSet the scan number and click Start, the camera moves horizontally at a certain speed between the set left and right limit. ClickStop to stop scanning.
PresetSet the preset number and clickGo to, the camera quickly positions the corresponding preset.
TourSet the tour number and clickStart, the camera moves in the order of the selected presets. ClickStop to stop touring.
PatternSet the pattern number and clickStart, the camera moves continuously according to the operation recording. Click Stop to stop patterning.Operation recording includes the information of manual operation, focus and zoom.
PanClick Start, and the camera rotates 360° at a certain speed in horizontal direction.
Go toSet the horizontal angle, vertical angle, and zoom. ClickGo to position a certain point accurately.
AssistantSet the assistant number and click Aux Onto enable the corresponding assistant function, and then you can adjust the camera. ClickAux Off to disable the corresponding assistant function.
Light/WiperSet the light or wiper of the camera.Click Enable to enable light/wiper function.Click Disable to disable light/wiper function.

4.4 Playback

This section introduces playback related functions and operations, including video playback and picture playback.

Dahua Technology IPC-HDBW3841E-AS - Playback - 1

- Before playing back video, configure record time range, record storage method, record schedule and record control. For details, see "5.1.1.2.1 Setting Record Plan".

- Before playing back picture, configure snapshot time range, snapshot storage method, snapshot plan. For details, see "5.1.1.3.1 Setting Snapshot Plan".

4.4.1 Playback Interface

Click the Playback tab, and the Playback interface is displayed.

Figure 4-23 Video playback
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text_image File Type: day Data Src: SD Card Jun: 2019 Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 8 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 29 30 00:00:00 - 00:00:00 Record Type All General Event Alarm Manual Stop

Figure 4-24 Picture playback
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text_image File Type: pg Data Src: SD Card Jun: < 2019 > Sub Mon Tue Ven Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 29 36 Snapshot Type All General Event Alarm

Table 4-7 Playback interface description

No.FunctionDescription
1FisheyeClick you can select display mode according to the installation mode during playback.This function is only available on fisheye cameras.
Rules InfoClick intelligent rules and object detection box are displayed. It is enabled by default.Rules Info is valid only when you enabled the rule during recording.
2 SoundControls the sound during playback.: More mode.: Vocal state. You can adjust the sound.
3 Play control barControls playback.: Click the icon to play back recorded videos.: Click the icon to stop playing back recorded videos.: Click the icon to play the next frame.: Click the icon to slow down the playback.: Click the icon to speed up the playback.
4 Progress barDisplays the record type and the corresponding period.Click any point in the colored area, and the system will play back the recorded video from the selected moment.Each record type has its own color, and you can see their relations in Record Type bar.
5 Record/Snapshot TypeSelect the record type or snapshot type.Record type includes General, Event, Alarm, Manual.Snapshot type includes General, Event, Alarm.
6 Assistant: You can zoom in or out video image of the selected area through two operations.: Click the icon to capture one picture of the current video, and it will be saved to the configured storage path.
7 Playback videoYou can select the file type, data source, and record date.
8 Video clipClip a certain recorded video and save it. For details, see "4.4.3 Clipping Video".
9 Time format of progress barIncludes 4 time formats:24hr2hrTaker30min24hras an example, the whole progress stands for 24 hours.

4.4.2 Playing back Video or Picture

This section introduces the operation of video playback and picture playback. This section takes video playback as an example.

Step 1 Select dav from the Record Type drop-down list and SD card from the Data Src drop-down list.

Select jpg from Record Type drop-down list when playing back pictures, and you do not need to select data source.

Figure 4-25 File type selection
Dahua Technology IPC-HDBW3841E-AS - Playing back Video or Picture - 1

text_image File Type dav Data Src SD Card < 12 2013 > Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Step 2 Select the record type in Record Type.

Figure 4-26 Record type selection
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text_image Record Type ✓ All ✓ General ✓ Motion ✓ Alarm ✓ Manual

When selecting Event as the record type, you can select the specific event types from the

playback file list, such as Motion Detection, Video Tamper and Scene Changing.

Figure 4-27 Specific event types
Dahua Technology IPC-HDBW3841E-AS - Playing back Video or Picture - 3

text_image 00 : 00 : 00 - 23 : 59 : 59 Event Event Motion Detection Video Tamper Scene Changing Intensity Change Input Abnormal People Counting Defocus Detection Tripwire Intrusion Abandoned Object Missing Object Loitering Detection Fast-Moving Crowd Gathering Estimation

Step 3 Select the month and year of the video that you want to play.

Dahua Technology IPC-HDBW3841E-AS - Playing back Video or Picture - 4

Those dates with blue color indicate there were videos recorded in those days.

Step 4 Play video.

- Click in the control bar.

The system plays the recorded video of the selected date (in the order of time).

- The system plays the recorded video of the selected date (in the order of time).

- Click any point in the colored area on the progress bar.

The playback starts from that moment.

Figure 4-28 Progress bar
Dahua Technology IPC-HDBW3841E-AS - Playing back Video or Picture - 5

line | Time | Value | |---|---| | 00:00 | 1 | | 02:00 | 1 | | 04:00 | 1 | | 06:00 | 1 | | 08:00 | 1 | | 10:00 | 1 | | 12:00 | 1 | | 14:00 | 1 | | 16:00 | 1 | | 18:00 | 1 | | 20:00 | 1 | | 22:00 | 1 | | 24:00 | 1 |

- Click ☐, the video files of the selected date would be listed. Enter the start time and end time, and then click 🔒 to search all files between the start time and end time. Double-click the file in the list, and the system plays the video and displays file size, starting time, and ending time.

Figure 4-29 Playback file list
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text_image 00 : 00 : 00 - 23 : 59 : 59 General, Event, Alarm, Manual Download Format dav mp4 Start Time File Type 1 15:49:39 2 15:50:07 3 15:54:38 4 16:25:13 5 16:31:35 6 16:32:06 7 16:45:58 8 16:54:00 9 17:00:54 Start Time: End Time: File Size:

4.4.3 Clipping Video

Step 1 Click ☐, the video files of the selected date are listed.

Step 2 Select dav or mp4 in Download Format.

Step 3 Click on the progress bar to select the start time of the target video, and then click See Figure 4-30.

Figure 4-30 Clipping video
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text_image 00:00:00 - 00:00:00

Step 4 Click again on the progress bar to select the end time of the target video, and then click

Dahua Technology IPC-HDBW3841E-AS - Clipping Video - 2

Step 5 Click to download the video.

The system will prompt that it cannot play back and download at the same time. Step 6 Click OK.

The playback stops and the clipped file is saved in the configured storage path. For the configuration of storage path, see "4.5.2.5 Path".

4.4.4 Downloading Video or Picture

Download video or picture to a defined path. You can download single video or picture file, or download them in batches. This section takes downloading video as an example.

Dahua Technology IPC-HDBW3841E-AS - Downloading Video or Picture - 1

  • Playback and downloading at the same time is not supported.
  • Operations might vary with different browsers.
  • For details of viewing or setting storage path, see "4.5.2.5 Path".

4.4.4.1 Downloading a Single File

Step 1 Select dav from the Record Type drop-down list and SD card from the Data Src drop-down list. Select jpg from Record Type drop-down list when playing back pictures, and you do not need to select data source.

Step 2 Click , the video files of the selected date are listed. See Figure 4-29.

Step 3 Select dav or mp4 in Download Format. Click ✪ next to the file to be download. The system starts to download the file to the configured path. When downloading pictures, you do not need to select the download format.

4.4.4.2 Downloading Files in Batches

Step 1 Click on the playback interface.

Figure 4-31 Batch download
Dahua Technology IPC-HDBW3841E-AS - Downloading Files in Batches - 1

text_image Batch Download Type All Videos Start Time 2019-06-18 00:00:00 End Time 2019-06-18 23:59:59 Search Number File Size(Kb) Begin Time End Time File Type Download Progress File Size: 0Ko Type dav Path C:\Users\45JG3\WebDownload\PlaybackRecord Browse... Download

Step 2 Select the record type, set the start time and end time, and then click Search.

The searched files are listed.

Step 3 Select the files to be downloaded, select dav or mp4 from the Format drop-down list, and then set the storage path. Click Download.

The system starts to download the file to the configured path. When downloading picture, you do not need to select the download format.

4.5 Camera

This section introduces the camera setting, including conditions, video and audio.

Dahua Technology IPC-HDBW3841E-AS - Camera - 1

Camera parameters of different devices might vary.

4.5.1 Camera Conditions

Configure camera parameters of the camera to ensure surveillance goes properly.

4.5.1.1 Conditions

Configure camera parameters according to the actual situation, including picture, exposure, backlight and white balance.

4.5.1.1.1 Interface Layout

Configure camera parameters to improve the scene clarity, and ensure that surveillance goes properly. See Figure 4-32.

- Under profile, you can select between 9 different styles, such as normal, day, night or flowing light mode. Parameters (such as contrast and saturation) will change to match the style. You can also further modify the configurations for select modes (such as picture, exposure and backlight) after changing the main style. Flowing light is suitable for situations where there is slight light, and the panoramic function is unable to effectively detect targets.

Dahua Technology IPC-HDBW3841E-AS - Interface Layout - 1

After switching to flowing light, the mode in the exposure menu is automatically set to manual. The shutter time is adaptive, working at a maximum speed of 333 ms.
By default the backlight is off. The wide dynamic effect start or not can be determined by identifying the overexposure in the picture. This gives you control over overexposure in the picture.

- Camera with PTZ function supports zoom, focus and iris operations. See Figure 4-33. Configure speed, click direction button, ⏻ and ⭕ to adjust the direction, zoom, focus and iris and so on, to adjust the camera to the proper position.

Figure 4-32 Camera conditions
Dahua Technology IPC-HDBW3841E-AS - Interface Layout - 2

text_image Conditions Profile Management 2020-06-02 15 02:47 Tue Profile Day ▶ Picture ▶ Exposure ▶ Backlight ▶ WB ▶ Day & Night ▶ Illuminator ▶ Detog Style Standard Brightness —— 0 —— + 50 Contrast —— 0 —— + 50 Saturation —— 0 —— + 50 Sharpness —— 0 —— + 50 Gamma —— 0 —— + 50 Default Refresh Save

Figure 4-33 Camera conditions (PTZ camera)
Dahua Technology IPC-HDBW3841E-AS - Interface Layout - 3

text_image Conditions Profile Management Channel PTZ Camera Profile Day ▶ Picture ▶ Exposure ▶ Backlight ▶ WB ▶ Day & Night ▶ ZoomFocus ▶ IR Light ▶ Defog Style Standard Brightness 0 50 Contrast 0 50 Saturation 0 50 Chrome CNT 0 50 Sharpness 0 50 Sharpness CNT 0 50 Gamma 0 50 Flip 0° EIS On Off Picture Freeze On Off Default Refresh Save Zoom + Focus + Iris + Speed 5

4.5.1.1.2 Picture

You can configure picture parameters as needed.

Step 1 Select Setting > Camera > Conditions > Conditions > Picture.

Figure 4-34 Picture
Dahua Technology IPC-HDBW3841E-AS - Picture - 1

text_image Channel PTZ Camera Profile Day Picture Exposure Backlight WB Day & Night ZoomFocus Illuminator Defog Style Standard Brightness — — + 50 Contrast — — + 50 Saturation — — + 50 Chroma CNT — — + 50 Sharpness — — + 50 Sharpness CNT — — + 50 Gamma — — + 50 Flip 0° Optical Dejitte... ● On ○ Off Picture Freeze ○ On ● Off

Step 2 Configure picture parameters.

Table 4-8 Description of picture parameters

ParameterDescription
StyleSelect the picture style from soft, standard and vivid.● Soft: Default image style, displays the actual color of the image.● Standard: The hue of the image is weaker than the actual one, and contrast is smaller.● Vivid: The image is more vivid than the actual one.
BrightnessChange the value to adjust the picture brightness. The higher the value is, the brighter the picture will be, and the smaller the darker. The picture might be hazy if the value is configured too big.
ContrastChange the contrast of the picture. The higher the value is, the more the contrast will be between bright and dark areas, and the smaller the less. If the value is set too big, the dark area would be too dark and bright area easier to get overexposed. The picture might be hazy if the value is set too small.
SaturationMake the color deeper or lighter. The higher the value is, the deeper the color will be, and the lower the lighter. Saturation value does not change image brightness.
SharpnessChanges the sharpness of picture edges. The higher the value is, the clearer the picture edges will be, and if the value is set too big, picture noises are more likely to appear.
GammaChanges the picture brightness and improves the picture dynamic range in a non-linear way. The higher the value is, the brighter the picture will be, and the smaller the darker.
MirrorSelect On, and the picture would display with left and right side reversed.
FlipChanges the display direction of the picture, see the options below.0°: Normal display.90°: The picture rotates 90° clockwise.180°: The picture rotates 90° counterclockwise.270°: The picture flips upside down.For some models, please set the resolution to be 1080p or lower when using 90° and 180°. For details, see "4.5.2.1 Video".
EISCorrects the device shaking with difference comparison algorithm and improves the image clarity, effectively solves the picture shaking problem.
Optical DejiteringThe lens vibration is sensed by the gyroscope sensor, and the corresponding compensation is calculated using the intelligent anti-shake algorithm. The movable parts inside the lens are driven to offset the vibration, which greatly reduces blurring of the image caused by the vibration.
Picture FreezeWhen you call a preset, the image displays the preset location, not the rotation image.

Step 3 Click Save.

4.5.1.1.3 Exposure

Configure iris and shutter to improve image clarity.

Dahua Technology IPC-HDBW3841E-AS - Exposure - 1

Cameras with true WDR do not support long exposure when WDR is enabled in Backlight. Step 1 Select Setting > Camera > Conditions > Conditions > Exposure.

Figure 4-35 Exposure
Dahua Technology IPC-HDBW3841E-AS - Exposure - 2

text_image Profile Day Anti-flicker Outdoor Mode Auto 3D NR On Off Grade - + 50 Picture Exposure Backlight WB Day & Night Illuminator Image Correction Splicing Mode

Step 2 Configure exposure parameters.

Table 4-9 Description of exposure parameters

ParameterDescription
Anti-flickerYou can select from 50 Hz, 60 Hz and Outdoor.50 Hz: When the electric supply is 50 Hz, the system adjusts the exposure according to ambient light automatically to ensure that there is no stripe appears.60 Hz: When the electric supply is 60 Hz, the system adjusts the exposure according to ambient light automatically to ensure that there is no stripe appears.Outdoor: You can select any exposure mode as needed.
ModeDevice exposure modes.Auto: Adjusts the image brightness according to the actual condition automatically.Gain Priority: When the exposure range is normal, the system prefers the configured gain range when auto adjusting according to the ambient lighting condition. If the image brightness is not enough and the gain has reached upper or lower limit, the system adjusts shutter value automatically to ensure the image at ideal brightness. You can configure gain range to adjust gain level when using gain priority mode.Shutter priority: When the exposure range is normal, the system prefers the configured shutter range when auto adjusting according to the ambient lighting condition. If the image brightness is not enough and the shutter value has reached upper or lower limit, the system adjusts gain value automatically to ensure the image at ideal brightness.Iris priority: The iris value is set to a fixed value, and the device adjusts shutter value then. If the image brightness is not enough and the shutter value has reached upper or lower limit, the system adjusts gain value automatically to ensure the image at ideal brightness.Manual: Configure gain and shutter value manually to adjust image brightness.When the Anti-flicker is set to Outdoor, you can select Gain priority or Shutter priority in the Mode list.
Exposure CompSets the value, and it ranges from 0 to 50. The higher the value is, the brighter the image will be.
ShutterSet the effective exposure time. The smaller the value, the shorter the exposure time will be.
Shutter rangeWhen selecting Shutter Priority or Manual in Mode, and setting Customized Range in Shutter, you can set shutter range, and the unit is ms.
GainWhen selecting Gain Priority or Manual in Mode, you can set shutter range. With minimum illumination, the camera increases Gain automatically to get clearer images.
Iris When selectingAperture Priority in Mode, you can set iris range.
Auto IrisThis configuration is available only when the camera is equipped with auto-iris lens.When auto iris is enabled, the iris size changes automatically according to the ambient lighting condition, and the image brightness changes accordingly.When auto iris is disabled, the iris stays at full size and does not change no matter how ambient lighting condition changes.
2D NRAverage single-frame dots and other dots around to reduce noise.
3D NRWorks with multi-frame (no less than 2 frames) images and reduces noise by using the frame information between previous and latter frames.
GradeThis configuration is available only when the 3D DNR is enabled.The higher the DNR level is, the better the result will be.

Step 3 Click Save.

4.5.1.1.4 Backlight

You can select backlight mode from Auto, BLC, WDR, and HLS.

Step 1 Select Setting > Camera > Conditions > Conditions > Backlight.

Figure 4-36 Backlight
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text_image Profile Day ► Picture ► Exposure ► Backlight ► WB ► Day & Night ► Illuminator ► Image Correction ► Splicing Mode Mode Off

Step 2 Configure backlight parameters.

Table 4-10 Description of backlight parameters

Backlight modeDescription
AutoThe system adjusts image brightness according to ambient lighting condition automatically to ensure image clarity.
BLCEnable BLC, the camera can get clearer image of the dark areas on the target when shooting against light. You can select Default mode or Customized mode.When in Default mode, the system adjusts exposure according to ambient lighting condition automatically to ensure the clarity of the darkest area.When in Customized mode, the system auto adjusts exposure only to the set area according to ambient lighting condition to ensure the image of the set area at ideal brightness.
WDRThe system dims bright areas and compensates dark areas to ensure the clarity of all the area. The higher the value is, the brighter the dark will be, but the more the noise will be.Dahua Technology IPC-HDBW3841E-AS - Backlight - 2There might be a few seconds of video loss when the device is switching to WDR mode from other mode.
HLSEnable HLS when extreme strong light is in the environment (such as toll station or parking lot), the camera will dim strong light, and reduce the size of Halo zone to lower the brightness of the whole image, so that the camera can capture human face or car plate detail clearly. The higher the value is, the more obvious the HLS effect will be.

Step 3 Click Save.

4.5.1.1.5 WB

WB function makes the image color display precisely as it is. When in WB mode, white objects would always display white color in different environments.

Step 1 Select Setting > Camera > Conditions > Conditions > WB.

Figure 4-37 WB
Dahua Technology IPC-HDBW3841E-AS - WB - 1

text_image Profile Day Picture Exposure Backlight WB Day & Night Illuminator Image Correction Splicing Mode Mode Auto

Step 2 Configure WB parameters.

Table 4-11 Description of WB parameters

WB modeDescription
AutoThe system compensates WB according to color temperature to ensure color precision.
NaturalThe system auto compensates WB to environments without artificial light to ensure color precision.
Street LampThe system compensates WB to outdoor night scene to ensure color precision.
OutdoorThe system auto compensates WB to most outdoor environments with natural or artificial light to ensure color precision.
ManualConfigure red and blue gain manually; the system auto compensates WB according to color temperature.
Regional CustomThe system compensates WB only to the set area according to color temperature to ensure color precision.

Step 3 Click Save.

Configure the display mode of the image. The system switches between color and black-and-white mode according to the actual condition.

Step 1 Select Setting > Camera > Conditions > Conditions > Day & Night.

Figure 4-38 Day and night
Dahua Technology IPC-HDBW3841E-AS - WB - 2

text_image Profile Day Picture Exposure Backlight WB Day & Night Illuminator Image Correction Splicing Mode Mode Auto Sensitivity Medium Delay 6s

Step 2 Configure day and night parameters.

Table 4-12 Description of day and night parameters

ParameterDescription
ModeYou can select device display mode from Color, Auto, and B/W.Day & Night configuration is independent from profile management configuration.Color: The system displays color image.Auto: The system switches between color and black-and-white display according to the actual condition.B/W: The system displays black-and-white image.
SensitivityThis configuration is available only when you set Auto in Mode.You can configure camera sensitivity when switching between color and black-and-white mode.
DelayThis configuration is available only when you set Auto in Mode.You can configure the delay when camera switching between color and black-and-white mode. The lower the value is, the faster the camera switches between color and black-and-white mode.

Step 3 Click Save.

4.5.1.1.7 Zoom and Focus

Initialize lens to adjust zoom and focus. Only PTZ camera supports lens initialization.

Step 1 Select Setting > Camera > Conditions > Conditions > ZoomFocus.

Figure 4-39 Zoom and focus
Dahua Technology IPC-HDBW3841E-AS - Zoom and Focus - 1

text_image Profile Day ► Picture ► Exposure ► Backlight ► WB ► Day & Night ► ZoomFocus ► Illuminator ► Defog Mode Manual NearLight ——○—+ 50 FarLight ——○—+ 0

Step 2 Configure zoom and focus parameters.

Table 4-13 Description of zoom and focus parameters

ParameterDescription
Digital ZoomSelect On to enable digital zoom function.After the optical zoom reached the upper limit, enable digital zoom function, you still can do digital zoom operation.
Zoom SpeedAdjusts zoom speed. The higher the value is, the higher the speed will be.
ModeSets focus mode.Auto: When image moves or object changes in the scene, the camera will focus automatically.Semi Auto: Click ⏻ or ⚠ corresponding to Focus or Zoom, the camera will focus. Calling preset, positioning accurately or rotating PTZ also will trigger focus.Manual: Click ⏻ or ⚠ corresponding to Focusto adjust the focus.
Focus LimitWhen the focus length is too short, the camera will focus on the dome cover. Sets the shortest focus distance to avoid focusing on the dome cover. You can also change the focus speed by changing focus length.
SensitivityThe sensitivity of triggering focus. The higher the value is, the easier the focus will be triggered.

Step 3 Click Save.

Dahua Technology IPC-HDBW3841E-AS - Zoom and Focus - 2

Click Lens Initialization, the lens will adjust the zoom and focus parameters.

This configuration is available only when the device is equipped with illuminator.

Step 1 Select Setting > Camera > Conditions > Conditions > Illuminator.

Figure 4-40 Illuminator
Dahua Technology IPC-HDBW3841E-AS - Zoom and Focus - 3

text_image Profile Day Picture Exposure Backlight WB Day & Night Illuminator Image Correction Splicing Mode Mode Auto

Step 2 Configure illuminator parameters.

Table 4-14 Description of illuminator parameters

IlluminatorDescription
Fill LightSet Fill Light for sound and siren cameras.IR Mode: Enable the IR illuminator, and the white light is disabled.White Light: Enable the white light, and the IR illuminator is disabled.Smart illumination. They system will switch the illuminators according to the actual condition.When the ambient light reaches the threshold of IR illuminator, the IR illuminator is enabled. The white light is enabled when the target appears in surveillance area, disabled when the target is out of the surveillance area, and then the IR illuminator is enabled according to the ambient light.When selecting Smart Illumination as Fill Light, you need to set the illuminator delay. It is 60 seconds by default, and the range is 30–300 seconds.
ModeManualAdjust the brightness of illuminator manually, and then the system will supply illuminator to the image accordingly.
AutoThe system adjusts the illuminator intensity according to the ambient lighting condition.
Smart IR
ZoomPrioThe system adjusts the illuminator intensity automatically according to the change of the ambient light.When the ambient light turns darker, the system turns on the low beam lights first, if the brightness is still not enough, it turns on the high beam lights then.When the ambient light turns brighter, the system dims high beam lights until they are off, and then the low beam lights.When the focus reaches certain wide angle, the system will not turn on high beam light in order to avoid over-exposure in short distance. In the meantime, you can configure light compensation manually to fine-tune IR light intensity.
Off Illuminator is off.

Step 3 Click Save.

4.5.1.1.9 Defog

The image quality is compromised in foggy or hazy environment, and defog can be used to improve

image clarity.

Step 1 Select Setting > Camera > Conditions > Conditions > Defog.

Figure 4-41 Defog
Dahua Technology IPC-HDBW3841E-AS - Defog - 1

text_image Profile Day ► Picture ► Exposure ► Backlight ► WB ► Day & Night ► Illuminator ► Defog Mode Off

Step 2 Configure defog parameters.

Table 4-15 Description of defog parameters

DefogDescription
ManualConfigure function intensity and atmospheric light mode manually, and then the system adjusts image clarity accordingly. Atmospheric light mode can be adjusted automatically or manually.
AutoThe system adjusts image clarity according to the actual condition.
Off Defog function is disabled.

Step 3 Click Save.

4.5.1.1.10 Fisheye

Select install mode and record mode according to the actual installation scene. When the camera accesses the platform with corrective stream, the platform displays the corrective image.

Dahua Technology IPC-HDBW3841E-AS - Fisheye - 1

This function is only available on fisheye device.

Step 1 Select Setting > Camera > Conditions > Conditions > Fisheye.

Figure 4-42 Fisheye
Dahua Technology IPC-HDBW3841E-AS - Fisheye - 2

text_image Profile Day ► Picture ► Exposure ► Backlight ► WB ► Day & Night ► Illuminator ► Fisheye Install Mode Ceiling

Step 2 Set install mode and record mode.

Table 4-16 Description of fisheye parameters

ParameterDescription
Install Mode You can selectCeiling, Wall, or Ground.
Record Mode1O: The original image before correction.1P: 360° rectangular panoramic image.2P: When the install mode is Ceiling or Ground, you can set this mode. Two associated 180° rectangular image screens, and at any time, the two screens form a 360° panoramic image.1R: Original image screen + independent sub-screen. You can zoom or drag the image in all the screens.2R: Original image screen + two independent sub-screens. You can zoom or drag the image in all the screens.4R: Original image screen + four independent sub-screens. You can zoom or drag the image in all the screens.1O + 3R: Original image screen + three independent sub-screens. You can zoom or drag the image in original image screen, and move the image (upper and lower) in sub-screens to adjust the vertical view.

Step 3 Click Save.

4.5.1.1.11 Image Correction

Enable the image correction function to correct some bent objects (such as roads) in the image of panoramic splicing cameras, but it will influence the field of view.

Figure 4-43 Image correction
Dahua Technology IPC-HDBW3841E-AS - Image Correction - 1

text_image Profile Day Picture Exposure Backlight WB Day & Night Illuminator Image Correction Splicing Mode Image Correct... On Off

Dahua Technology IPC-HDBW3841E-AS - Image Correction - 2

  • If the camera has multiple sensors, the image correction function will only displayed when the number of splicing sensors is 4 or less.
  • When the device enables image correction, intelligent event and sub stream 2 are closed automatically.

4.5.1.1.12 Splicing Mode

Select the splicing mode to splice several images of different lens to a panoramic image. You can select Merged Splicing or Splicing for Mode.

Figure 4-44 Splicing mode
Dahua Technology IPC-HDBW3841E-AS - Splicing Mode - 1

text_image Profile Day ► Picture ► Exposure ► Backlight ► WB ► Day & Night ► Illuminator ► Image Correction ► Splicing Mode Mode Merged Splicing

4.5.1.2 Profile Management

The surveillance system works in different ways as profile configured in different time.

Step 1 Select Setting > Camera > Conditions > Profile Management.

The Profile Management interface is displayed.

Step 2 Manage profile.

- When Profile Management is set as General, the surveillance system works under General configuration.

Figure 4-45 General
Dahua Technology IPC-HDBW3841E-AS - Profile Management - 1

text_image Conditions Profile Management Zoom and Focus Profile Management ● General ○ Full Time ○ Schedule ○ Day/Night Default Refresh Save

- When Profile Management is set as Full Time, you can select Day or Night in the Always Enable list, the surveillance system works under Always Enable configuration.

Figure 4-46 Full time
Dahua Technology IPC-HDBW3841E-AS - Profile Management - 2

text_image Conditions Profile Management Zoom and Focus Profile Management General Full Time Schedule Day/Night Always Enable Day Default Refresh Save

- When Profile Management is set as Schedule, you can drag the slide block to set certain time as Day or Night. For example, set 8:00–18:00 as day, and 0:00–8:00 and 18:00–24:00 as night.

Figure 4-47 Schedule
Dahua Technology IPC-HDBW3841E-AS - Profile Management - 3

text_image Conditions Profile Management Zoom and Focus Profile Management General Full Time Schedule Day/Night Period setting 0:00 4:00 8:00 12:00 16:00 20:00 24:00 Day Night Default Refresh Save

- When Profile Management is set as Day & Night, the surveillance system works under Day & Night configuration.

Figure 4-48 Day/Night
Dahua Technology IPC-HDBW3841E-AS - Profile Management - 4

text_image Conditions Profile Management Zoom and Focus Profile Management ○ General ○ Full Time ○ Schedule ● Day/Night Default Refresh Save

Step 3 Click Save.

4.5.1.3 Zoom and Focus

You can adjust image clarity through auto or manual focus; and adjust the image size through zoom. For details, see "4.2.4.2 Zoom and Focus".

4.5.1.4 Splicing

When the panorama contains multiple images captured by different lenses, enable this function. Before splicing, make sure that the surveillance scene is large and there are no objects blocking the

camera from taking a clear picture, otherwise, the splicing might fail.

Step 1 Select Setting > Camera > Conditions > Splicing.

Figure 4-49 Splicing
Dahua Technology IPC-HDBW3841E-AS - Splicing - 1

natural_image Panoramic fisheye view of a highway interchange with city skyline and greenery, no visible text or symbols

Step 2 Select the lenses that need to be spliced.

When splicing the image through selecting lenses, you need to select the continuous splicing screens. The screen with the icon ⚙ (deeper color) is the first screen of the splicing. You can select any screen as the first one, and then select the following screens continuously. The system supports the splicing of 2 lenses to 8 lenses.

Dahua Technology IPC-HDBW3841E-AS - Splicing - 2

  • This function is available on select models. And it is all sensors splicing by default.
  • For Multi-Sensor Panoramic + PTZ Camera, the 4-sensor device supports 2 to 4 lenses splicing; the 6-sensor device supports 2 to 6 lenses splicing; the 8-sensor device supports 2-8 lenses splicing.

Step 3 Click Start.

The system starts to splice the image.

  • Some cameras restart automatically after splicing is complete, You can view the results of the splicing in theLive window.
  • Some cameras display splicing live window after splicing is complete. Click OK, and then the default window appears. Click OK and the splicing will take effect.

4.5.2 Setting Video Parameters

This section introduces video parameters, such as video, snapshot, overlay, ROI (region of interest), and path.

Dahua Technology IPC-HDBW3841E-AS - Setting Video Parameters - 1

Click Default, and the device is restored to default configuration. Click Refresh to view the latest configuration.

4.5.2.1 Video

Configure video stream parameters, such as stream type, encode mode, resolution, frame rate, bit rate type, bit rate, I frame interval, SVC, and watermark.

Step 1 Select Setting > Camera > Video > Video.

Figure 4-50 Video
Dahua Technology IPC-HDBW3841E-AS - Video - 1

text_image Video Snapshot Overlay Path Main Stream Encode Mode H.265 Encoding Strategy AI Codec Resolution 3840*2160(3840x2160) Frame Rate(FPS) 20 Bit Rate Type CBR Reference Bit Rate 1441-8192Kb/S Bit Rate Customized 3072 (3~8192) (Kb/S) I Frame Interval 40 Watermark Settings Watermark Character Digital/CCTV Stream Smooth + 46 Sub Stream Enable Sub Stream 1 Encode Mode H.265 Resolution 704*576(D1) Frame Rate(FPS) 20 Bit Rate Type CBR Reference Bit Rate 150-1280Kb/S Bit Rate 512 (Kb/S) I Frame Interval 40 (20~150) Stream Smooth + 46 Default Refresh Save

Step 2 Configure video parameters.

Table 4-17 Description of video parameters

ParameterDescription
EnableSelect the Enable check box to enable sub stream. It is enabled by default.Dahua Technology IPC-HDBW3841E-AS - Video - 2You can enable multiple sub streams simultaneously.When the device enables image correction, intelligent event and sub stream 2 are closed automatically.
Encode ModeSelect encode mode.H.264: Main profile encode mode. Compared with H.264B, it requires smaller bandwidth.H.264H: High profile encode mode. Compared with H.264, it requires smaller bandwidth.H.264B: Baseline profile encode mode. It requires smaller bandwidth.H.265: Main profile encode mode. Compared with H.264, it requires smaller bandwidth.MJPEG: When under this mode, the image requires high bit rate value to ensure clarity, you are recommended to set the Bit Rate value to the biggest value in the Reference Bit Rate.
Encoding StrategySelect the encoding strategy as needed.General: Disable smart codec.Smart Codec: Enable smart codec to improve video compressibility and save storage space. It is applicable to static scenes.Al Code: When the bandwidth and storage space are restricted, the camera will select the encoding strategy with lower bit rate to save storage space. It is applicable to dynamic scenes.After Al codec is enabled, Bit Rate Type is CBR, and it cannot be changed. Comparing with general mode, Al codec has lower bite rate. This function is only available on cameras with Al functions.⚠️After smart codec and Al codec are enabled, the camera would stop supporting the third stream, ROI, and smart event detection, and the actual interface shall prevail.
ResolutionThe resolution of the video. The higher the value is, the clearer the image will be, but the bigger the bandwidth will be required.
Video ClipThis function is available only for sub stream 2 of some select models.Main stream1. Select the resolution as needed, and click 📧 next to Resolution.The Area interface is displayed.2. Clip the image on the Area interface, and then click Save.View the clipped video on Live interface.Sub stream 21. Select Video Clip, and click 📧The Area interface is displayed.2. View the clipped video on Live interface (only the live interface of sub stream 2 displays the clipped area).
Frame Rate (FPS)The number of frame in one second of video. The higher the value is, the clearer and smoother the video will be.
Bit Rate TypeThe bit rate control type during video data transmission. You can select bit rate type from:CBR (Constant Bit Rate): The bit rate changes a little and keeps close to the defined bit rate value.VBR (Variable Bit Rate): The bit rate changes as monitoring scene changes. BookThe Bit Rate Type can be only be set as CBR when Encode Mode is set as MJPEG.
QualityThis parameter can be configured only when the Bit Rate Type is set as VBRThe better the quality is, the larger the bandwidth will be requested.
Reference Bit RateThe most suitable bit rate value range recommended to user according to the defined resolution and frame rate.
Max Bit RateThis parameter can be configured only when the Bit Rate Type is set as VBR.You can select the value of the Max Bit Rate according to the Reference Bit Rate value. The bit rate then changes as monitoring scene changes, but the max bit rate keeps close to the defined value.
Bit RateThis parameter can be configured only when the Bit Rate Type is set as CBR.Select bit rate value in the list according to actual condition. You can also customize the value.
I Frame IntervalThis parameter can be configured only whenEncoding Strategyis set as General or AI Codec.The number of P frames between two I frames. The smaller the value, the higher the image quality, and the range changes asFrame Rate(FPS)changes. It is recommended to set I Frame Interval twice as big as Frame Rate(FPS).When selectingAI Codec in Encoding Strategy, you can only select the value same as or twice as big as Frame Rate(FPS).
SVCScaled video coding, able to encode a high quality video bit stream that contains one or more subset bit streams. When sending stream, to improve fluency, the system will quit some data of related lays according to the network status.1: The default value, which means that there is no layered coding.2, 3 and 4: The lay number that the video stream is packed.
Watermark SettingsYou can verify the watermark to check if the video has been tampered.1. Select the check box to enable watermark function.2. The default character is DigitalCCTV.
Watermark Character
Stream SmoothClick [IMAGE]or drag [IMAGE]to set the value of Stream Smooth.The higher the value is, the less smooth the stream, but the higher the image definition; the lower the value is, the more smooth the stream, but the lower the image definition.[IMAGE]The value of Stream Smooth is 100 by default.

Step 3 Click Save.

4.5.2.2 Snapshot

You can configure snapshot parameters, including snapshot type, image size, quality and interval.

Step 1 Select Setting > Camera > Video > Snapshot.

Figure 4-51 Snapshot
Dahua Technology IPC-HDBW3841E-AS - Snapshot - 1

text_image Video Snapshot Overlay ROI Path Snapshot Type: General Image Size 1000P (1920*1000) Quality 5 Interval 1 S Default Refresh Save

Step 2 Configure snapshot parameters.

Table 4-18 Description of snapshot parameter

ParameterDescription
Snapshot TypeYou can select General and Event.General: The system takes snapshot as scheduled. For details, see "4.7.2 Setting Schedule".Event: The system takes snapshot when the video detection, audio detection, event, or alarm is triggered. This function requires the corresponding snapshot being enabled.
Image SizeThe same resolution with main stream.
QualityConfigures the snapshot quality. There are six levels of Image quality, and the sixth is the best.
IntervalConfigures the snapshot frequency.Select Customized, and then you can configure snapshot frequency manually.

Step 3 Click Save.

4.5.2.3 Overlay

Configure overlay information, and it will be displayed on the Live interface.

4.5.2.3.1 Configuring Privacy Masking

You can enable this function when you need to protect privacy of some area on the video image.

Dahua Technology IPC-HDBW3841E-AS - Configuring Privacy Masking - 1

Functions might vary with different models.

Privacy Masking (1)

Step 1 Select Setting > Camera > Video > Overlay > Privacy Masking.

Figure 4-52 Privacy masking (1)
Dahua Technology IPC-HDBW3841E-AS - Privacy Masking (1) - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Enable Disable ▶ Channel Title ▶ Time Title ▶ Text Overlay ▶ Font Attribute ▶ Picture Overlay ▶ Custom Overlay ▶ People Counti... ▶ Face Statistics Remove All Delete (Or Rightclick) Default Refresh Save

Figure 4-53 Privacy masking (PTZ dome)
Dahua Technology IPC-HDBW3841E-AS - Privacy Masking (1) - 2

text_image Video Snapshot Overlay ROI Path Channel PTZ Camera ▶ Privacy Masking ▶ Channel Title ▶ Time Title ▶ OSD info ▶ Picture Overlay ▶ Ranging SN 1 Color Draw Delete Clear Go to Zoom Focus Iris Speed 5

Step 2 Configure privacy masking.

- PTZ dome

  1. Select the SN.
  2. Adjust the live image to the proper location through PTZ, select the color, and then click Draw. Press the mouse button to draw rectangles. The configuration takes effect immediately.
  3. Other operations:

Select the SN, and click Go to, the speed dome rotates to the masked area.
- Select the SN, and click Delete to delete the masking rectangles.
◇ Click Clear, and the click OK to clear all masking rectangles.

- Other cameras

  1. Select Enable, and then drag the block to the area that you need to cover.

Dahua Technology IPC-HDBW3841E-AS - - Other cameras - 1

◇ You can drag 4 rectangles at most.
- Click Remove All to delete all the area boxes; select one box, and then click Delete or right-click to delete it.

  1. Adjust the size of the rectangle to protect the privacy.

  2. Click Save.

Privacy Masking (2)

You can select the type of the masking from Color Lump and Mosaic.

  • When selecting Color Lump only, you can draw triangles and convex quadrilaterals as blocks. You can drag 8 blocks at most, and the color is black.
  • When selecting Mosaic, you can draw rectangles as blocks with mosaic. You can draw 4 blocks at most.
    • Color Lump + Mosaic ( ≤ 4): You can draw 8 blocks at most.

Step 1 Select Setting > Camera > Video > Overlay > Privacy Masking.

Step 2 Select Enable.

Step 3 Click Add, select the masking type, and then draw blocks in image as needed.

Figure 4-54 Privacy masking (2)
Dahua Technology IPC-HDBW3841E-AS - Privacy Masking (2) - 1

text_image Video Snapshot Overlay ROI Path 2020-12-30 11:32:25 Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay Face Counting IPC Enable Disable Add Clear No Name Type Color Delete 1 Privacy Masking1 Color Lump ■ 2 Privacy Masking2 Color Lump ■ 3 Privacy Masking3 Mosaic

• View and edit the block

Select the privacy masking rule to be edited in the list, then the rule is highlighted, and the block frame is displayed in the image. You can edit the selected block as needed, including moving the position, and adjusting the size.

- Edit the block name

Double-click the name in Name to edit the block name.

- Delete the block

◇ Click — to delete blocks one by one.

◇ Click Clear to delete all blocks.

4.5.2.3.2 Configuring Channel Title

You can enable this function when you need to display channel title in the video image.

Step 1 Select Setting > Camera > Video > Overlay > Channel Title.

Figure 4-55 Channel title
Dahua Technology IPC-HDBW3841E-AS - Configuring Channel Title - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Count Face Statistics Enable Disable Input Channel Title: IPC Text Align Right Default Refresh Save

Step 2 Select the Enable check box, enter the channel title, and then select the text align.

Dahua Technology IPC-HDBW3841E-AS - Configuring Channel Title - 2

Click + to expand the channel title, and you can expand 1 line at most.

Step 3 Move the title box to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.3 Configuring Time Title

You can enable this function when you need to display time in the video image.

Step 1 Select Setting > Camera > Video > Overlay > Time Title.

Figure 4-56 Time title
Dahua Technology IPC-HDBW3841E-AS - Configuring Time Title - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Counti... Face Statistics Enable Disable Week Display Default Refresh Save

Step 2 Select the Enable check box.

Step 3 Select the Week Display check box.

Step 4 Move the time box to the position that you want in the image.

Step 5 Click Save.

4.5.2.3.4 Configuring Text Overlay

You can enable this function if you need to display text in the video image.

Dahua Technology IPC-HDBW3841E-AS - Configuring Text Overlay - 1

Text overlay and picture overlay cannot work at the same time, and the IPC that connects to mobile NVR with private protocol would display GPS information as priority.

Step 1 Select Setting > Camera > Video > Overlay > Text Overlay.

Figure 4-57 Text overlay
Dahua Technology IPC-HDBW3841E-AS - Configuring Text Overlay - 2

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Counti... Face Statistics Enable Disable Input Text: 682598 Text Align Right Default Refresh Save

Step 2 Select the Enable check box, enter the text you need, and then select alignment. The text is displayed in the video image.

Dahua Technology IPC-HDBW3841E-AS - Configuring Text Overlay - 3

Click + to expand the text overlay, and you can expand 9 lines at most.

Step 3 Move the text box to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.5 Configuring Font Attribute

You can enable this function if you need to adjust the font size in the video image.

Step 1 Select Setting > Camera > Video > Overlay > Font Attribute.

Figure 4-58 Font attribute
Dahua Technology IPC-HDBW3841E-AS - Configuring Font Attribute - 1

text_image Video Snapshot Overlay ROI Path ▶ Privacy Masking ▶ Channel Title ▶ Time Title ▶ Text Overlay ▶ Font Attribute ▶ Picture Overlay ▶ Custom Overlay ▶ People Counti... ▶ Face Statistics Color Font Size 48°48 Default Refresh Save

Step 2 Select the font color and size.
Click More Color to customize the font color.
Step 3 Click Save.

4.5.2.3.6 Configuring Picture Overlay

You can enable this function if you need to display picture information on the video image.

Dahua Technology IPC-HDBW3841E-AS - Configuring Picture Overlay - 1

Text overlay and picture overlay cannot work at the same time.

Step 1 Select Setting > Camera > Video > Overlay > Picture Overlay.

Figure 4-59 Picture overlay
Dahua Technology IPC-HDBW3841E-AS - Configuring Picture Overlay - 2

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Test Overlay Font Attribute Picture Overlay Custom Overlay People Count... Face Statistics Enable Disable Picture Preview: Upload Picture Requirement for picture upload 1. Max size is 16k 2. Max resolution is 128x126 pixels 3. 256 colors, timp format Default Refresh Save

Step 2 Select the Enable check box, click Upload Picture, and then select the picture to be overlaid.

The picture is displayed on the video image.

Step 3 Move the overlaid picture to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.7 Configuring Custom Overlay

You can enable this function if you need to display custom information on the video image.

Step 1 Select Setting > Camera > Video > Overlay > Custom Overlay.

Figure 4-60 Custom overlay
Dahua Technology IPC-HDBW3841E-AS - Configuring Custom Overlay - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Count... Face Statistics Enable Disable Input Custom OSD Text Align Right Default Refresh Save

Step 2 Select the Enable check box, and then select the text align.

Dahua Technology IPC-HDBW3841E-AS - Configuring Custom Overlay - 2

Click + to expand the custom overlay, and you can expand 1 line at most.

Step 3 Move the custom box to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.8 Configuring OSD Info

You can enable this function if you want to display the information of preset, PTZ coordinates, zoom, tour and location on the video image.

Dahua Technology IPC-HDBW3841E-AS - Configuring OSD Info - 1

Only tracking speed dome supports OSD info function.

Step 1 Select Setting > Camera > Video > Overlay > OSD Info.

Figure 4-61 OSD information
Dahua Technology IPC-HDBW3841E-AS - Configuring OSD Info - 2

text_image Video Snapshot Overlay ROI Path 2017-06-23 17:37:17 Tio OSB info Preview Privacy Mask Channel Title Time Title OBS info Picture Overlay Counting Pretest Enable Disable Temperature Enable Disable Coordinates Enable Disable Zoom Enable Disable North Enable Disable RS495 Enable Disable Enable Disable Input Text: Default Refresh Save Text Align: Right

Step 2 Configure OSD information.

Table 4-19 Description of OSD information

ParameterDescription
PresetSelect Enable, and the preset name is displayed in the image when the camera turns to the preset, and it will disappear 3 s later.
TemperatureSelect Enable and the internal temperature of the current device is displayed.
Coordinates SelectEnable and the PTZ coordinates info is displayed in the image.
ZoomSelect Enable and the zoom info is displayed in the image. such as Dahua Technology IPC-HDBW3841E-AS - Configuring OSD Info - 3, which means 12x zoom rate.
North SelectEnable and the north direction is displayed in the image.
RS485 SelectEnable and it will enable RS-485 communication function.
TextSelect Enable and set text, and the text is displayed in the image.
Input Text
Text AlignAlignment mode of the displayed information in the image.

Step 3 Move the OSD box to the position that you want in the image.
Step 4 Click Save.

4.5.2.3.9 Configuring Counting

The image displays statistics of the enter number and leave number. When the overlay function is enabled during intelligent rules configuration, this function is enabled simultaneously.

Step 1 Select Setting > Camera > Video > Overlay > Counting.

Figure 4-62 Counting
Dahua Technology IPC-HDBW3841E-AS - Configuring Counting - 1

text_image Video Snapshot Overlay ROI Path 2013-10-22 14:30:27 Privacy Masking Channel Title Time Title Text Overlay Picture Overlay Counting Enable Disable Statistics Type Enter Number Leave Number Text Align Left Default Refresh Save

Step 2 Select the Enable check box, and then configure counting method and alignment.
Step 3 Move the counting box to the position that you want in the image.
Step 4 Click Save.

4.5.2.3.10 Configuring Structured Statistics

The image displays structured statistics. When the overlay function enabled during intelligent rules configuration, this function is enabled simultaneously.

Step 1 Select Setting > Camera > Video > Overlay > Structured Statistics.

Figure 4-63 Structured statistics
Dahua Technology IPC-HDBW3841E-AS - Configuring Structured Statistics - 1

text_image Video Snapshot Overlay ROI Panel Intersection Face Recognition 2015-07-16-15:46:48 Privacy Masking Channel Title Time Title Text Overlay Picture Overlay Structured Sti... Face Statistics Enable Disable Statistics Type Motor Vehicle Non-motor Vehicle Text Align Left Default Refresh Save

Step 2 Select the Enable check box, select the statistics type, and then select text align.
Step 3 Move the structured statistics box to the position that you want in the image.
Step 4 Click Save.

4.5.2.3.11 Configuring GPS Position

The image displays GPS position. When the overlay function enabled during intelligent rules configuration, this function is enabled simultaneously.

Step 1 Select Setting > Camera > Video > Overlay > GDP Position.

Figure 4-64 GDP position
Dahua Technology IPC-HDBW3841E-AS - Configuring GPS Position - 1

text_image Video Snapshot Overlay ROI Path 14792Kbps 8192x2700 Channel Panorama Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay GPS Position GPS Position Enable Disable Mode Manual LON W E 0 0 0 LAT N S 0 0 0 Default Refresh Save

Step 2 Select the Enable check box, and then select the Mode to Auto or Manual.

Step 3 Move GPS position box to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.12 Configuring Ranging

Configure camera height and the display time of overlay information. Click any point on the ground that the pole is installed on the image, and the overlay information between camera and the selected point is displayed.

Step 1 Select Setting > Camera > Video > Overlay > Ranging.

Figure 4-65 Ranging
Dahua Technology IPC-HDBW3841E-AS - Configuring Ranging - 1

text_image Video Snapshot Overlay ROI Path Channel PTZ Camera Privacy Masking Enable Disable Channel Title Installation Height 0 m (>0) Time Title OSD info Time Display 5 s (1 - 30) Picture Overlay Ranging Default Refresh Save

Step 2 Select the Enable check box, and then set the installation height and time display.

Time display: The display time of the ranging information on live image.

Step 3 Click Save.

4.5.2.3.13 Configuring ANPR

The image displays ANPR statistics information. When the overlay function enabled during intelligent rules configuration, this function is enabled simultaneously.

Step 1 Select Setting > Camera > Video > Overlay > ANPR.

Figure 4-66 ANPR
Dahua Technology IPC-HDBW3841E-AS - Configuring ANPR - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Count... Structured Sta... ANPR Face Statistics Enable Disable Statistics Type Motor Vehicle Text Align Left Default Refresh Save

Step 2 Select the Enable check box, select the statistics type, and then select text align.

Step 3 Move the ANPR box to the position that you want in the image.

Step 4 Click Save.

4.5.2.3.14 Configuring Face Statistics

The image displays face statistics information. When the overlay function enabled during intelligent rules configuration, this function is enabled simultaneously.

Step 1 Select Setting > Camera > Video > Overlay > Face Statistics.

Figure 4-67 Face statistics
Dahua Technology IPC-HDBW3841E-AS - Configuring Face Statistics - 1

text_image Video Snapshot Overlay ROI Path Privacy Masking Channel Title Time Title Text Overlay Font Attribute Picture Overlay Custom Overlay People Counti... Face Statistics Enable Disable Text Align Left Default Refresh Save

Step 2 Select the Enable check box, and select text align.

Step 3 Move the structured statistics box to the position that you want in the image.

Step 4 Click Save.

4.5.2.4 ROI

Select ROI (region of interest) on the image and configure the image quality of ROI, and then the selected image is displayed at defined quality.

Step 1 Select Setting > Camera > Video > ROI.

Figure 4-68 ROI
Dahua Technology IPC-HDBW3841E-AS - ROI - 1

text_image Video Snapshot Overlay ROI Path Enable Disable Image Quality 6 2018-12-27 17:23:07 LOAD:0.0000 LOAD:0.0000 Speed: 0.0Km/h Remove All Delete (Or Rightclick ) Default Refresh Save

Step 2 Select the Enable check box, draw the area on the image, and then configure the image

quality of ROI.

Dahua Technology IPC-HDBW3841E-AS - ROI - 2

  • You can draw four area boxes at most.
  • The higher the image quality value is, the better the quality will be.
  • Click Remove All to delete all the area boxes; select one box, and then click Delete or right-click to delete it.

Step 3 Click Save.

4.5.2.5 Path

You can configure the storage path for live snapshot, live record, playback snapshot, playback download, and video clips.

Step 1 Select Setting > Camera > Video > Path.

Figure 4-69 Path
Dahua Technology IPC-HDBW3841E-AS - Path - 1

text_image Video Snapshot Overlay Path Live Snapshot C:\Users\admin\WebDownload\LiveSnapshot Browse... Live Records C:\Users\admin\WebDownload\LiveRecord Browse... Playback Snapshot C:\Users\admin\WebDownload\PlaybackSnapshot Browse... Playback Download C:\Users\admin\WebDownload\PlaybackRecord Browse... Video Clips C:\Users\admin\WebDownload\VideoClips Browse... Default Save

Step 2 Click Browse to select the storage path for live snapshot, live record, playback snapshot, playback download, and video clips.

Table 4-20 Description of path

ParameterDescription
Live SnapshotThe snapshot of live interface.The default path isC:\Users\admin\WebDownload\LiveSnapshot.Dahua Technology IPC-HDBW3841E-AS - Path - 2Admin in the path refers to the account being used.
Live RecordThe recorded video of live interface.The default path isC:\Users\admin\WebDownload\LiveRecord.
Playback SnapshotThe snapshot of playback interface.The default path isC:\Users\admin\WebDownload\PlaybackSnapshot.
Playback DownloadThe downloaded video of playback interface.The default path isC:\Users\admin\WebDownload\PlaybackRecord.
Video ClipsThe clipped video of playback interface.The default path isC:\Users\admin\WebDownload\VideoClips.

Step 3 Click Save.

4.5.3 Audio

You can configure audio parameters and alarm audio.

4.5.3.1 Configuring Audio Parameter

This section introduces audio parameters, including encode mode, sampling frequency, audio in type, and noise filter.

Step 1 Select Setting > Camera > Audio > Audio.

Figure 4-70 Audio
Dahua Technology IPC-HDBW3841E-AS - Configuring Audio Parameter - 1

text_image Audio Encode Make Stream Enable Encode Mode G.711A Sampling Frequency 16k Sub Stream Enable Sub Stream 1 Encode Mode G.711A Sampling Frequencies 16k Attribute Audition Type Lineln Noise Filter Enable Microphone Volume 50 Speaker Volume 50 Default Refresh Save

Step 2 Select the Enable check box in Main Stream or Sub Stream.

For the camera with multiple channels, select the channel number.

Dahua Technology IPC-HDBW3841E-AS - Configuring Audio Parameter - 2

Please carefully activate the audio acquisition function according to the actual requirements of the application scenario.

Step 3 Configure audio parameters.

Table 4-21 Description of audio parameters

ParameterDescription
Encode ModeYou can select audio Encode Mode from G.711A, G.711Mu, AAC, G.726.The configured audio encode mode applies to both audio and intercom. The default value is recommended.
Sampling FrequencySampling number per second. The higher the sampling frequency is, the more the sample in a second will be, and the more accurate the restored signal will be. You can select audio Sampling Frequency from 8K, 16K, 32K, 48K, 64K.
Audioin TypeYou can select audioin type from:Linein: Requires external audio device.Mic: Not require external audio device.
Noise FilterEnable this function, and the system auto filters ambient noise.
Microphone VolumeAdjusts microphone volume.
Speaker VolumeAdjusts speaker volume.

Step 4 Click Save.

4.5.3.2 Configuring Alarm Audio

You can record or upload alarm audio file. The audio file will be played when the alarm is triggered.

  • Click to play the selected audio.
  • Click to download the audio to local storage.

Step 1 Select Setting > Camera > Audio > Alarm Audio.

Figure 4-71 Alarm audio
Dahua Technology IPC-HDBW3841E-AS - Configuring Alarm Audio - 1

text_image Audio Alarm Audio Choose Name Play Download Modify Delete G alarm1 pcm 0 ± C alarm2 pcm 0 ± Add Audio File

Step 2 Click Add Audio File.

Figure 4-72 Add audio file
Dahua Technology IPC-HDBW3841E-AS - Configuring Alarm Audio - 2

text_image Add Audio File Record Upload Audio File pcm Record

Step 3 Configure the audio file.

  • Select Record, enter the audio name in the input box, and then click Record.
  • Select Upload, click to select the audio file to be uploaded, and then click Upload.

Dahua Technology IPC-HDBW3841E-AS - Configuring Alarm Audio - 3

The camera supports audio file with .pcm format only, and you can upload audio files with .pcm, .wav in standard .pcm format, .mp3 or .aac formats.

Step 4 Select the file that you need.

4.6 Network

This section introduces network configuration.

4.6.1 TCP/IP

You can configure IP address and DNS (Domain Name System) server and so on according to network planning.

Prerequisites

The camera has connected to the network.

Procedure

Step 1 Select Setting > Network > TCP/IP.

Figure 4-73 TCP/IP
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image TCP/IP Host Name IPC Ethernet Card Wire(DEFAULT) Set as Default Mode Static DHCP MAC Address IP Version IPv4 IP Address Subnet mask Default Gateway Preferred DNS Server Alternate DNS Server Enable ARP/Ping to set IP address service Default Refresh Save

Step 2 Configure TCP/IP parameters.

Table 4-22 Description of TCP/IP parameters

ParameterDescription
Host NameEnter the host name, and the maximum length is 15 characters.
Ethernet CardSelect the Ethernet card that need to be configured, and the default one is Wire.
ModeThe mode that the camera gets IP:StaticConfigure IP Address, Subnet Mask, and Default Gateway manually, and then click Save, the login interface with the configured IP address is displayed.DHCPWhen there is DHCP server in the network, select DHCP, and the camera acquires IP address automatically.
MAC AddressDisplays host MAC address.
IP Version SelectIPv4 or IPv6.
IP Address When you selectStatic in Mode, enter the IP address and subnet mask that you need.
Subnet Mask
Default GatewayIPv6 does not have subnet mask.The default gateway must be in the same network segment with the IP address.
Preferred DNSIP address of the preferred DNS.
Alternate DNSIP address of the alternate DNS.
Enable ARP/Ping to set IP address serviceSelect the check box, get the camera MAC address, and then you can modify and configure the device IP address with ARP/ping command.This is enabled by default. During reboot, you will have no more than 2 minutes to configure the device IP address by a ping packet with certain length, the server will be turned off in 2 minutes, or it will be turned off immediately after the IP address is successfully configured. If this is not enabled, the IP address cannot be configured with ping packet.A demonstration of configuring IP address with ARP/Ping.1. Keep the camera that needs to be configured and the PC within the same local network, and then get a usable IP address.2. Get the MAC address of the camera from device label.3. Open command editor on the PC and enter the following command.
Windows syntax→
arp -s <IP Address> <MAC> +ping -l 480 -t <IP Address> +
Windows example→
arp -s 192.168.0.125 11-40-8c-18-10-11ping -l 480 -t 192.168.0.125
UNIX/Linux/Mac syntax→
arp -s <IP Address> <MAC> +ping -s 480 <IP Address> +
UNIX/Linux/Mac example→
arp -s 192.168.0.125 11-40-8c-18-10-11ping -s 480 192.168.0.125
4. Restart the camera.5. Check the PC command line, if information such as Reply from 192.168.0.125...is displayed,the configuration succeeds, and you can turn it off then.6. Enter http://(IP address) in the browser address bar to log in.

Step 3 Click Save.

4.6.2 Port

Configure the port numbers and the maximum number of users (includes web, platform client, and mobile phone client) that can connect to the device simultaneously.

Step 1 Select Setting > Network > Port.

Figure 4-74 Port
Dahua Technology IPC-HDBW3841E-AS - Port - 1

text_image Port Max Connection 10 (1~20) TCP Port 37777 (1025~65534) UDP Port 37778 (1025~65534) HTTP Port 80 RTSP Port 554 RTMP Port 1935 (1025~65534) HTTPS Port 443 Default Refresh Save

Step 2 Configure port parameters.

Dahua Technology IPC-HDBW3841E-AS - Port - 2

  • 0–1024, 1900, 3800, 5000, 5050, 9999, 37776, 37780–37880, 39999, 42323 are occupied for specific uses.
  • Do not use the same value of any other port during port configuration.

Table 4-23 Description of port parameters

ParameterDescription
Max ConnectionThe max number of users (web client, platform client or mobile phone client) that can connect to the device simultaneously. The value is 10 by default.
TCP PortTransmission control protocol port. The value is 37777 by default.
UDP PortUser datagram protocol port. The value is 37778 by default.
HTTP PortHyper text transfer protocol port. The value is 80 by default.
RTSP PortReal time streaming protocol port, and the value is 554 by default. If you play live view with QuickTime, VLC or Blackberry smart phone, the following URL format is available.When the URL format requiring RTSP, you need to specify channel number and bit stream type in the URL, and also user name and password if needed.When playing live view with Blackberry smart phone, you need to turn off the audio, and then set the codec mode to H.264B and resolution to CIF.URL format example:rtsp://username:password@ip:port/cam/realmonitor?channel=1&sub type=0Among that:Username: The user name, such as admin.Password: The password, such as admin.IP: The device IP, such as 192.168.1.112.Port: Leave it if the value is 554 by default.Channel: The channel number, which starts from 1. For example, if you are using channel 2, then the channel=2.Subtype: The bit stream type; 0 means main stream (Subtype=0) and 1 means sub stream (Subtype=1).Example: If you require the sub stream of channel 2 from a certain device, then the URL should be:rtsp://admin:admin@10.12.4.84:554/cam/realmonitor?channel=2&sub type=1If user name and password are not needed, then the URL can be:rtsp://ip:port/cam/realmonitor?channel=1&subtype=0
RTMP PortReal Time Messaging Protocol. The port that RTMP provides service. It is 1935 by default.
HTTPS Port HTTPS communication port. It is 443 by default.

Step 3 Click Save.

Dahua Technology IPC-HDBW3841E-AS - Port - 3

The configuration of Max Connection takes effect immediately, and others will take effect after reboot.

4.6.3 PPPoE

Point-to-Point Protocol over Ethernet, it is one of the protocols that device uses to connect to the internet. Get the PPPoE username and password from the internet service provider, and then set up network connection through PPPoE, the camera will acquire a WAN dynamic IP address.

Prerequisites

- The camera has connected to the network.

- You have gotten the account and password from Internet Service Provider.

Procedure

Step 1 Select Setting > Network > PPPoE.

Figure 4-75 PPPoE
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image PPPoE Enable Username Password Default Refresh Save

Step 2 Select the Enable check box, and then enter user name and password.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

  • Disable UPnP while using PPPoE to avoid possible influence.
  • After making PPPoE connection, the device IP address cannot be modified through web interface

Step 3 Click Save.

The success prompt box is displayed, and then the real-time WAN IP address is displayed.

You can visit camera through the IP address.

4.6.4 DDNS

Properly configure DDNS, and then the domain name on the DNS server matches your IP address and the matching relation refreshes in real time. You can always visit the camera with the same domain name no matter how the IP address changes.

Prerequisites

Check the type of DNS server supported by the camera.

Procedure

Step 1 Select Setting > Network > DDNS.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

  • Third party server might collect your device information after DDNS is enabled.
  • Register and log in to the DDNS website, and then you can view the information of all the connected devices in your account.

Figure 4-76 DDNS
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image DDNS ✓ Type NO-IP DDNS After enabling DDNS function, third-party server may collect your device info. Address dynupdate.no-ip.com Domain Name None在其 Username:none Password ●●●● Interval 1440 Min.(1440~2880) Default Refresh Save

Step 2 Select Type, and configure the parameters as needed.

Table 4-24 Description of DDNS parameters

ParameterDescription
TypeThe name and web address of the DDNS service provider, see the matching relationship below:• CN99 DDNS web address: www.3322.org• NO-IP DDNS web address: dynupdate.no-ip.com• Dyndns DDNS web address: members.dyndns.org
Web Address
Domain NameThe domain name you registered on the DDNS website.
TestOnly when selectingNO-IP DDNS type, you can click test to check whether the domain name registration is successful.
UsernameEnter the username and password that you got from the DDNS server provider. You need to register an account (includes username and password) on the DDNS server provider's website.
Password
IntervalThe update cycle of the connection between the device and the server, and the time is 10 minutes by default.

Step 3 Click Save.

Result

Open the browser on PC, enter the domain name at the address bar, and then press Enter, the login interface is displayed.

4.6.5 SMTP (Email)

Configure email parameter and enable email linkage. The system sends email to the defined address when the corresponding alarm is triggered.

Step 1 Select Setting > Network > SMTP (Email).

Figure 4-77 SMTP (Email)
Dahua Technology IPC-HDBW3841E-AS - SMTP (Email) - 1

text_image SMTP(Email) SMTP Server none Port 25 Anonymity Username anonymity Password ••••• Sender none Authentication TLS Title IPC Message + Attachment Mail Receiver Health Mail Update Period 30 Min.(30~1440) Test Default Refresh Save

Step 2 Configure SMTP (Email) parameters.

Table 4-25 Description of SMTP (Email) parameters

ParameterDescription
SMTP Server SMTP serveraddressDahua Technology IPC-HDBW3841E-AS - SMTP (Email) - 2For details, see Table 4-26.
PortThe port number of the SMTP server.
Username The account ofSMTP server.
PasswordThe password of SMTP server.
AnonymitySelect the check box, and the sender's information is not displayed in the email.
SenderSender's email address.
AuthenticationSelect Authentication from None, SSL and TLS.Dahua Technology IPC-HDBW3841E-AS - SMTP (Email) - 3For details, see Table 4-26.
TitleEnter maximum 63 characters in Chinese, English, and Arabic numerals. Click to select title type, including Name, Device ID, and Event Type, and you can set maximum 2 titles.
AttachmentSelect the check box to support attachment in the email.
Mail ReceiverReceiver's email address. Supports 3 addresses at most.
Health MailThe system sends test mail to check if the connection is successfully configured. Select Health Mail and configure the Update Period, and then the system sends test mail as the set interval.

For the configuration of major mailboxes, see Table 4-26.

Table 4-26 Description of major mailbox configuration

MailboxSMTP serverAuthenticationPortDescription
QQ smtp.qq.comSSL 465The authentication type cannot be None.You need to enable SMTP service in your mailbox.The authentication code is required, the QQ password or email password is not applicable.[IMAGE]Authentication code: The code you receive when enabling SMTP service.
TLS 587The authentication type cannot be None.You need to enable SMTP service in your mailbox.The authentication code is required, the QQ password or email password is not applicable.[IMAGE]Authentication code: The code you receive when enabling SMTP service.
163 smtp.163.com SSL465/994TLS 25You need to enable SMTP service in your mailbox.The authentication code is required; the email password is not applicable.[IMAGE]Authentication code: the code you receive when enabling SMTP service.You need to enable SMTP service in your mailbox.The authentication code is required; the email password is not applicable largely Authentication code: the code you receive when enabling SMTP service.
none 25You need to enable SMTP service in your mailbox.The authentication code is required; the email password is not applicable largely Authentication code: the code you receive when enabling SMTP service.
Sinasmtp.sina.comSSL 465Enable SMTP service in your mailbox.
none 25
126smtp.126.comnone25Enable SMTP service in your mailbox.

Step 3 Click Save.
Step 4 Click Test to test whether the emails can be sent and received successfully.

4.6.6 UPnP

UPnP (Universal Plug and Play), a protocol that establishes mapping relation between local area and wide area networks. This function enables you to visit local area device through wide area IP address.

Prerequisites

  • Make sure the UPnP service is installed in the system.
  • Log in the router, and configure WAN IP address to set up internet connection.
  • Enable UPnP in the router.
  • Connect your device to the LAN port of the router.
  • Select Setting > Network > TCP/IP, in IP Address, enter the local area IP address of the router or select DHCP and acquires IP address automatically.

Procedure

Step 1 Select Setting > Network > UPnP.

Figure 4-78 UPnP
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image UPnP Enable Mode Custom Router State Mapping Failed Start Device Discover Port Mapping List Service Name Protocol Internal Port External Port Status Modify HTTP WebService.TCP Mapping Failed TCP PrvService.TCP Mapping Failed UDP PrvService.UDP Mapping Failed RTSP RTSPService.TCP Mapping Failed Default Refresh Save

Step 2 Select the Enable check box, and there are two mapping modes: Custom and Default.

  • Select Custom, click and then you can modify external port as needed.
  • Select Default, and then the system finishes mapping with unoccupied port automatically, and you cannot modify mapping relation.

Step 3 Click Save.

Open web browser on PC, enter http:// wide area IP address: external port number, and then you can visit the local area device with corresponding port.

4.6.7 SNMP

SNMP (Simple Network Management Protocol) can be used to enable software such as MIB Builder and MG-SOFT MIB Browser to connect to the camera and manage and monitor the camera.

Prerequisites

• Install SNMP monitoring and managing tools such as MIB Builder and MG-SOFT MIB Browser.
- Get the MIB file of the matched version from technical support.

Procedure

Step 1 Select Setting > Network > SNMP.

Figure 4-79 SNMP (1)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image SNMP Version v1 v2 v3 SNMP Port 161 (1~65535) Read Community Write Community Trap Address Trap Port 162 Default Refresh Save

Figure 4-80 SNMP (2)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image SNMP Version v1 v2 v3 (Recommend... SNMP Port 161 (1~65535) Read Community Write Community Trap Address Trap Port 162 Read-only Username public Authentication Type MD5 SHA Authentication Pas... The minimum pass phrase length is 8 characters Encryption Type CBC-DES Encryption Password The minimum pass phrase length is 8 characters Read&write Userna... private Authentication Type MD5 SHA Authentication Pas... The minimum pass phrase length is 8 characters Encryption Type CBC-DES Encryption Password The minimum pass phrase length is 8 characters Default Refresh Save

Step 2 Select SNMP version to enable SNMP.

  • Select V1, and the system can only process information of V1 version.
  • Select V2, and the system can only process information of V2 version.
  • Select V3, and then V1 and V2 become unavailable. You can configure user name,

password and authentication type. It requires corresponding user name, password and authentication type to visit your device from the server.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 3

Using V1 and V2 might cause data leakage, and V3 is recommended.

In Trap Address, enter the IP address of the PC that has MIB Builder and MG-SOFT MIB

Browser installed, and leave other parameters to the default.

Table 4-27 Description of SNMP parameters

ParameterDescription
SNMP PortThe listening port of the software agent in the device.
Read Community, Write CommunityThe read and write community string that the software agent supports.You can enter number, letter, underline and dash to form the name.
Trap AddressThe target address of the Trap information sent by the software agent in the device.
Trap PortThe target port of the Trap information sent by the software agent in the device.
Read-only UsernameSet the read-only username accessing device, and it is public by default.You can enter number, letter, and underline to form the name.
Read/Write UsernameSet the read/write username access device, and it is public by default.You can enter number, letter, and underline to form the name.
Authentication TypeYou can select from MD5 and SHA. The default type is MD5.
Authentication Password It should be no less than 8 digits.
Encryption TypeThe default is CBC-DES.
Encryption Password It should be no less than 8 digits.

Step 3 Click Save.

Result

View device configuration through MIB Builder or MG-SOFT MIB Browser.

  1. Run MIB Builder and MG-SOFT MIB Browser.
  2. Compile the two MIB files with MIB Builder.
  3. Load the generated modules with MG-SOFT MIB Browser.
  4. Enter the IP address of the device you need to manage in the MG-SOFT MIB Browser, and then select version to search.
  5. Unfold all the tree lists displayed in the MG-SOFT MIB Browser, and then you can view the

configuration information, video channel amount, audio channel amount, and software version.

Dahua Technology IPC-HDBW3841E-AS - Result - 1

Use PC with Windows OS and disable SNMP Trap service. The MG-SOFT MIB Browser will display prompt when alarm is triggered.

4.6.8 Bonjour

Enable this function, and the OS and clients that support Bonjour would find the camera automatically. You can have quick visit to the camera with Safari browser.

Dahua Technology IPC-HDBW3841E-AS - Bonjour - 1

Bonjour is enabled by default.

Procedure

Step 1 Select Setting > Network > Bonjour.

Figure 4-81 Bonjour
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Bonjour Enable Server Name 2F03XXXXXXXXX Default Refresh Save

Step 2 Select the Enable check box, and then configure server name.

Step 3 Click Save.

Result

In the OS and clients that support Bonjour, follow the steps below to visit the network camera with Safari browser.

  1. Click Show All Bookmarks in Safari.
  2. Enable Bonjour. The OS or client automatically detects the network cameras with Bonjour enabled in the LAN.
  3. Click the camera to visit the corresponding web interface.

4.6.9 Multicast

When multiple users are previewing the device video image simultaneously through network, it might fail due to limited bandwidth. You can solve this problem by setting up a multicast IP (224.0.1.0–238.255.255.255) for the camera and adopt the multicast protocol.

Procedure

Step 1 Select Setting > Network > Multicast.

Figure 4-82 Multicast
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Multicast Main Stream Enable Multicast Address 224 1 2 4 (224.0.0-239.255.255.255) Port 40000 (1025-65500) Sub Stream Enable Sub Stream 1 Multicast Address 224 1 2 4 (224.0.0-239.255.255.255) Port 40016 (1025-65500) Default Refresh Save

Step 2 Select the Enable check box, and enter IP address and port number.

Table 4-28 Description of multicast parameters

ParameterDescription
Multicast AddressThe multicast IP address of Main Stream/Sub Stream is 224.1.2.4 by default, and the range is 224.0.0.0–239.255.255.255.
PortThe multicast port of corresponding stream:Main Stream: 40000; Sub Stream1: 40016; Sub Stream2: 40032, and all the range is 1025–65500.

Step 3 Click Save.

Result

In the Live interface, select RTSP in Multicast, and then you can view the video image with multicast protocol.

4.6.10 802.1x

Cameras can connect to LAN after passing 802.1x authentication.

Step 1 Select Setting > Network > 802.1x.

Figure 4-83 802.1x
Dahua Technology IPC-HDBW3841E-AS - 802.1x - 1

text_image 802.1x Enable Authentication PEAP Username none Password **** Default Refresh Save

Step 2 Select the Enable check box, and then configure parameters.

Table 4-29 Description of 802.1x parameters

ParameterDescription
AuthenticationPEAP (protected EAP protocol).
UsernameThe user name that was authenticated on the server.
PasswordCorresponding password.

Step 3 Click Save.

4.6.11 QoS

You can solve problems such as network delay and congestion with this function. It helps to assure bandwidth, reduce transmission delay, packet loss rate, and delay jitter to improve experience.

0–63 means 64 degrees of priority; 0 for the lowest and 63 the highest.

Step 1 Select Setting > Network > QoS.

Figure 4-84 QoS
Dahua Technology IPC-HDBW3841E-AS - QoS - 1

text_image QoS Realtime Monitor 0 (0~63) Command 0 (0~63) Default Refresh Save

Step 2 Configure QoS parameters.

Table 4-30 Description of QoS parameters

ParameterDescription
Realtime MonitorConfigure the priority of the data packets that used for network surveillance. 0 for the lowest and 63 the highest.
CommandConfigure the priority of the data packets that used for configure or checking.

Step 3 Click Save.

4.6.12 5G

5G configuration includes dialing configuration and mobile configuration. Install SIM card (Subscriber Identification Module) to the camera, and connect it to 5G network through dialing configuration and mobile configuration.

  • Dialing configuration: Connect the camera to 5G network in a specific period.
  • Mobile configuration: Configure the mobile phone to receive the linkage message. When an alarm is triggered, the system sends an alarm message to the receiver, and then the receiver can active the camera and connect it to 5G network through message or call.

4.6.12.1 Dialing Setting

Configure the camera to connect it to 5G network.

Step 1 Select Setting > Network > 5G > Dialing Setting.

Step 2 Select the Enable check box, and configure the parameters.

Figure 4-85 Dialing setting
Dahua Technology IPC-HDBW3841E-AS - Dialing Setting - 1

text_image Dialing Setting Mobile Settings Wireless Net Type Auto Enable APN cmnet Authorize Mode No Dial-up Number *98*1# Username Password ************ Interval 30 s Time Range Setup Wireless Network State Dial-up Status Online IP Address SIM State Exists Subnet Mask Work Mode NR Gateway IMSI IMEI ICCID Wireless Signal NR 67% Default Refresh Save

Table 4-31 Dialing setting parameters

ParameterDescription
Wireless Net TypeSelect the wireless net type according to the carrier.
APN Acquired from the carrier.
Authentication ModeSelect the authentication mode according to different carrier.
Dial-up NumberThe number is different according to different carrier, and it can be acquired from carrier.
Username Acquired from the carrier.
Password Acquired from the carrier.
IntervalIt is the period beyond the dial-up period which has been configured, it is 30 s by default, during which means the camera can auto connect to 5G network. After the period is over, the camera automatically cuts off the connection to save flow.
Time RangeThe camera can connect to 5G network during the configured period. For details, see "5.1.1.1 Setting Period".
Wireless Network StateWhen the dialing is successful, the wireless network status is displayed.
Wireless SignalWhen the dialing is successful, the wireless net type and signal strength are displayed.

Step 3 Click Save.

4.6.12.2 Mobile Setting

Configure the mobile phone, and all alarm messages support sending message the configured receiver. After receiving a message, the receiver can active the camera and connect it to 5G network through message or call.

  • Message send: Set the receiver's phone number, and when an alarm is triggered, the system will send message to the receiver.
  • Message activation: Set the sender's phone number, the sender can send command message to active the camera. The commands are as following:

On: Make the camera online.
◇ Off: Make the camera offline.
◇ Reboot: Restart the camera.

- Phone activation: Set the receiver's phone number, the caller can call the camera to active the camera, and make it online.

Step 1 Select Setting > Network > 5G > Mobile Setting.

Step 2 Select Message send, Message activation, or Phone activation as needed.

Step 3 Enter the phone numbers of receiver, sender, or caller, and click + to add it to the list.

Dahua Technology IPC-HDBW3841E-AS - Mobile Setting - 1

  • Select a phone number, and click to delete it.
  • You can edit the message in Title during configuration.

Figure 4-86 Mobile setting
Dahua Technology IPC-HDBW3841E-AS - Mobile Setting - 2

text_image Dialing Setting | Mobile Settings Message Send Receiver 15 Message Activation Sender 15 Phone Activation Caller 15 Title Event Message Default Refresh Save

4.6.13 Access Platform

4.6.13.1 P2P

P2P is a private network traversal technology which enables users to manage devices easily without requiring DDNS, port mapping or transit server.

Scan the QR code with your smart phone, and then you can add and manage more devices on the

mobile phone client.

Step 1 Select Setting > Network > Access Platform > P2P.

Figure 4-87 P2P
Dahua Technology IPC-HDBW3841E-AS - P2P - 1

text_image P2P ONVIF RTMP Enable Status Offline S/N 4M02 QR Code Please scan the QR code on the actual interface. OK Cancel Default Refresh Save
  • When P2P is enabled, remote management on device is supported.
  • When P2P is enabled and the device accesses to the network, the status shows online. The information of the IP address, MAC address, device name, and device SN will be collected. The collected information is for remote access only. You can cancel Enable selection to reject the collection.

Step 2 Log in to mobile phone client and tap Device management.

Step 3 Tap the + at the upper right corner.

Step 4 Scan the QR code on the P2P interface.

Step 5 Follow the instructions to finish the settings.

4.6.13.2 ONVIF

The ONVIF authentication is On by default, which allows the network video products (including video recording device and other recording devices) from other manufacturers to connect to your device.

Dahua Technology IPC-HDBW3841E-AS - ONVIF - 1

ONVIF is enabled by default.

Step 1 Select Setting > Network > Port > ONVIF.

Figure 4-88 ONVIF
Dahua Technology IPC-HDBW3841E-AS - ONVIF - 2

text_image P2P ONVIF RTMP Authentication On Off Default Refresh Save

Step 2 Select On in Authentication.
Step 3 Click Save.

4.6.13.3 RTMP

Through RTMP, you can access the third-party platform (such as Ali and YouTube) to realize video live view.

Dahua Technology IPC-HDBW3841E-AS - RTMP - 1

  • RTMP can be configured by admin only.
  • RTMP supports the H.264, H.264 B and H.264H video formats, and the AAC audio format only.

Step 1 Select Setting > Network > Port > RTMP.

Figure 4-89 RTMP
Dahua Technology IPC-HDBW3841E-AS - RTMP - 2

text_image P2P ONVIF RTMP Enable Stream Type Main Stream Sub Stream 1 Sub Stream 2 Address Type Non-custom Custom IP Address 0.0.0.0 Port 1935 (0~65535) Custom Address Default Refresh Save

Step 2 Select the Enable check box.

Dahua Technology IPC-HDBW3841E-AS - RTMP - 3

Make sure that the IP address is trustable when enabling RTMP.

Step 3 Configure RTMP parameters.

Table 4-32 Description of RTMP parameters

ParameterDescription
Stream TypeThe stream for live view. Make sure that the video format is the H.264, H.264 B and H.264H, and the audio format is AAC.
Address TypeIncludes Non-custom and Custom.Non-custom: Enter the server IP and domain name.Custom: Enter the path allocated by the server.
IP Address When selectingNon-custom, you need to enter server IP address and port.IP address: Support IPv4 or domain name.Port: We recommend that you use the default one.
Port
Custom AddressWhen selecting Custom, you need to enter the path allocated by the server.

Step 4 Click Save.

4.7 Storage

This section introduces how to manage saved resources (such as recorded video) and storage space. The storage management helps to make best use of storage space.

4.7.1 Setting Storage Plan

  • Setting record plan and record control to achieve all-time recording, recording in specific period or alarm linked recording. For details, see "5.1.1.2.1 Setting Record Plan" and "5.1.1.2.2 Setting Record Control".
  • Set the snapshot schedule as needed. For details, see "5.1.1.3.1 Setting Snapshot Plan".

4.7.2 Setting Schedule

You can configure record schedule, snapshot schedule and holiday schedule. Set certain days as holiday, and when the Record or Snapshot is selected in the holiday schedule, the system takes snapshot or records video as holiday schedule defined.

Prerequisites

  • Set the record mode to be Auto in Record Control. For details, see "5.1.1.2.1 Setting Record Plan".
  • Configure holiday record and snapshot schedule. For details, see "5.1.1.2.1 Setting Record Plan" and "5.1.1.3.1 Setting Snapshot Plan".

Procedure

Step 1 Select Setting > Storage > Schedule > Holiday Schedule.

Figure 4-90 Holiday schedule
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Record Snapshot Holiday Schedule Record Snapshot Calendar Jul Sun Mon Tue Wen Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Refresh Save

Step 2 Select Record or Snapshot.
Step 3 Select the days you need to set as holiday.
Those days with yellow color indicates that they were set as holidays.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

When holiday schedule setting is not the same as the general setting, holiday schedule setting is prior to the general setting. For example, with Holiday Schedule enabled, if the day is holiday, the system snapshots or records as holiday schedule setting; otherwise, the system snapshots or records as general setting.

Step 4 Click Save.

4.7.3 Setting Destination

This section introduces the configuration of the storage method for the recorded videos and snapshots.

4.7.3.1 Path

You can select different storage paths for the recorded videos and snapshots according to event type. You can select from SD card, FTP and NAS.

Dahua Technology IPC-HDBW3841E-AS - Path - 1

Local is displayed only on models that support SD card.

Step 1 Select Setting > Storage > Destination > Path.

Figure 4-91 Path
Dahua Technology IPC-HDBW3841E-AS - Path - 2

text_image Path Local FTP NAS Record Snapshot Event Type Scheduled Motion Detection Alarm Local FTP NAS Event Type Scheduled Motion Detection Alarm Local FTP NAS Default Refresh Save

Step 2 Select the storage method that you need for the recorded videos and snapshots of different types.

Table 4-33 Description of path parameters

ParameterDescription
Event Type Select fromScheduled, Motion Detection and Alarm.
Local Save in the internal SD card.
FTP Save in the FTP server.
NASSave in the NAS (network attached storage).

Step 3 Click Save.

Step 4 Configure other path parameters on Destination, FTP or NAS interface. For details, see "4.7.3 Setting Destination", "4.7.3.3 FTP" or "4.7.3.4 NAS".

4.7.3.2 Local

Display the information of the local SD card. You can set it as read only or read & write; you can also hot swap and format SD card.

Dahua Technology IPC-HDBW3841E-AS - Local - 1

Functions might vary with different models.

Select Setting > Storage > Destination > Local.

  • Click Read Only, and then the SD card is set to read only.
  • Click Read & Write, and then the SD card is set to read & write.
  • Click Hot Swap, and then you can pull out the SD card.
  • Click Refresh, and then you can format the SD card.
  • Click Format, and you can format the SD card.

Dahua Technology IPC-HDBW3841E-AS - Local - 2

When reading SD card on PC, if the SD card capacity is much less than the nominal capacity, you need to format the SD card. Then the data in SD card will be cleared, and the SD card is formatted to be private file system. The private file system can greatly improve SD card multimedia file read/write performance. Download Diskmanager from Toolbox to read the SD card. For details, contact aftersales technicians.

Figure 4-92 Local
Dahua Technology IPC-HDBW3841E-AS - Local - 3

text_image Path Local FTP NAS Name Security Add Item Read Cap/Hot Water Cap/Off Date: General Print & Write 19827.34m0519.34 Read Only Read & Write Hot Swap Refresh Forma

4.7.3.3 FTP

FTP can be enabled only when it was selected as a destination path. When the network does not work, you can save all the files to the internal SD card for emergency.

Step 1 Select Setting > Storage > Destination > FTP.

Step 2 Select the Enable check box, and select the FTP type.

Dahua Technology IPC-HDBW3841E-AS - FTP - 1

You select FTP or SFPT from the drop-down list. SFTP is recommended to enhance network security.

Step 3 Configure FTP parameters.

Figure 4-93 FTP
Dahua Technology IPC-HDBW3841E-AS - FTP - 2

text_image Path Local FTP NAS Enable SFTP(Recommended) Server Address Port (0~65535) Username Password Remote Directory share Directory Structure Use Level 3 Directory Level 1 Directory Name Level 2 Directory Date Level 3 Directory Channel NO. Customized Picture... Date&Time Setting Emergency (Local) test Default Refresh Save

Figure 4-94 Picture name settings
Dahua Technology IPC-HDBW3841E-AS - FTP - 3

text_image Picture Name Settings No. Picture Name Content Separator Ordering ✓ 1 Date&Time ✓ 2 Millisecond _ ✓ 3 Name _ ✓ 4 IP Address _ 5 Channel NO. _ 6 Snapshot Type _ 7 Custom _ Date&TimeMillisecond_Name_IP Address_ Separator can only be a dash, underline or space. Save Cancel

Table 4-34 Description of FTP parameters

ParameterDescription
Server AddressThe IP address of the FTP server.
PortThe port number of the FTP server.
UsernameThe user name to log in to the FTP server.
PasswordThe password to log in to the FTP server.
Remote DirectoryThe destination path in the FTP server, and it is shared by default.
Directory StructureSet the directory structure, which supports three levels at most.
Level 1 DirectorySet the directory name, and you can customize the name.When you select Custom, enter the custom directory name, which supports numbers, English letters, underlines and dashes.
Level 2 Directory
Level 3 Directory
Customized Picture NameClick Setting to set picture name.Date&Time is required, and it is selected by default.Select the other fields of the name, and the corresponding instruction will be displayed on the screen.Double-click the symbols under Separator, you can customize the separator.Double-click Custom, you can customize the files of the picture name.Click the arrow under Ordering, and you can adjust the ordering of the file.Dahua Technology IPC-HDBW3841E-AS - FTP - 4Date&Time and Millisecond is a whole, click the arrow of any one of the two fields, the two moves together.The real-time value of Millisecond will be displayed for precise snapshot, and for schedule and normal event, the millisecond displays 0000.
Emergency (Local)Select Emergency (Local), and when the FTP server does not work, all the files are saved to the internal SD card.

Step 4 Click Save.
Step 5 Click test to test whether FTP function works normally.

4.7.3.4 NAS

This function can be enabled only when NAS was selected as a destination path. Enable this function, and you can save all the files in the NAS.

Step 1 Select Setting > Storage > Destination > NAS.

Figure 4-95 NAS
Dahua Technology IPC-HDBW3841E-AS - NAS - 1

text_image Path Local FTP NAS Enable NFS Server Address 0.0.0.0 Remote Directory Default Refresh Save

Step 2 Select the Enable check box to enable NAS function, and select NAS protocol type.

  • NFS (Network File System): A file system which enables computers in the same network to share files through TCP/IP.
  • SMB (Server Message Block): Provides shared access for clients and the server.

Step 3 Configure NAS parameters.

Table 4-35 Description of NAS parameters

ParameterDescription
Server AddressThe IP address of the NAS server.
UsernameWhen selectingSMB protocol, you are required to enter user
Passwordname and password. Enter them as needed.
Remote DirectoryThe destination path in the NAS server.

Step 4 Click Save.

4.8 System

This section introduces system configurations, including general, date & time, account, safety, PTZ settings, default, import/export, remote, auto maintain and upgrade.

4.8.1 General

You can configure device name, language and video standard. Step 1 Select Setting > System > General > General.

Figure 4-96 General
Dahua Technology IPC-HDBW3841E-AS - General - 1

text_image General Date&Time Name 4M0292DYAG2B100 Language English Video Standard PAL TVOut TV Default Refresh Save

Step 2 Configure general parameters.

Table 4-36 Description of general parameters

ParameterDescription
NameThe name of the device.Dahua Technology IPC-HDBW3841E-AS - General - 2Each device has its own name.
Language Select system language.
Video Standard Select video standard from PAL and NTSC.
TVOutSelect On or Off. This function is available on models with analog output.Dahua Technology IPC-HDBW3841E-AS - General - 3If the TV out is On, smart plans will be disabled; if the smart plans are enabled, the TV out will be set as Off.SDI and HDCVI are available on select models.

Step 3 Click Save.

4.8.2 Date & Time

You can configure date and time format, time zone, current time, DST (Daylight Saving Time) or NTP server.

Step 1 Select Setting > System > General > Date & Time.

Figure 4-97 Date and time
Dahua Technology IPC-HDBW3841E-AS - Date &amp; Time - 1

text_image General Date&Time Date Format YYYY-MM-DD Time Format 24-Hour Time Zone (UTC) Coordinated Universal Time Current Time 2021-08-24 09 : 15 : 23 Sync PC DST DST Type Date Week Start Time Jan 1 00 : 00 : 00 End Time Jan 2 00 : 00 : 00 NTP Server clock.isc.org Port 123 Interval 10 Min. (0~30) Positioning System GPS Positioning System... Interval 30 Min. (1~1440) Default Refresh Save

Step 2 Configure date and time parameters.

Table 4-37 Description of date and time parameters

ParameterDescription
Date FormatConfigure the date format.
Time Format Configurethe time format. You can select from 12-Hour or 24-Hour.
Time ZoneConfigure the time zone that the camera is at.
Current TimeConfigure system time.Click Sync PC, and the system time changes to the PC time.
DSTEnable DST as needed.Select the check box, and configure start time and end time of DST with Date or Week.
NTPSelect the check box, and then NTP (network time protocol) is enabled,
NTP Serverthe system then syncs time with the internet server in real time.You can also enter the IP address, time zone, port, and interval of a PC which installed NTP server to use NTP.
Time Zone
Port
Interval
Positioning SystemSupports both GPS and BeiDou.
Positioning System Time SynchronizationSelect Position System Time Synchronization and configure Interval to enable this function. After enabling this function, the device will synchronize the system time according to the interval you set.
Interval

Step 3 Click Save.

4.8.3 Account

Manage all the users. You can add, delete, or modify users. Users include admin, added users and ONVIF users.

Managing users and groups are only available for administrator users.

- The max length of the user or group name is 31 characters which consisted of number, letters, underline, dash, dot and @.

- The password must consist of 8 to 32 non-blank characters and contain at least two types of characters among upper case, lower case, number, and special character (excluding '"; &).

- You can have 18 users and 8 groups at most.

- You can manage users through single user or group, and duplicate user names or group names are not allowed. A user can be in only one group at a time, and the group users can own authorities within group authority range.

• Online users cannot modify their own authority.

- There is one admin by default which has highest authority.

- Select Anonymous Login, and then log in with only IP address instead of user name and password. Anonymous users only have preview authorities. During anonymous login, click Logout, and then you can log in with other username.

4.8.3.1 Adding a User

You are admin user by default. You can add users, and configure different authorities.

Procedure

Step 1 Select Setting > System > Account > Account > Username.

Figure 4-98 Username
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Account Onvif User Anonymous Login Username Group Name No. Username Group Name Memo Restricted Login Modify Delete 1 admin admin admin's account / 2 admin1 admin Authority User Live Playback System System Info Manual Control File Backup Storage Event Network Peripheral AV Parameter PTZ Security Maintenance Add User

Step 2 Click Add User.

Figure 4-99 Add user (operation permission)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Add User Username Must Password The minimum pass phrase length is 8 characters Weak Middle Strong Confirm Password Group Name admin Memo Operation Permission Restricted Login All User Live Playback System System Info Manual Control File Backup Storage Event Network Peripheral AV Parameter PTZ Security Maintenance Save Cancel

Figure 4-100 Add user (restricted login)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 3

text_image Add User Username Must Password The minimum pass phrase length is 8 characters Weak Middle Strong Confirm Password Group Name admin Memo Operation Permission Restricted Login IP Address IPv4 IP Address 1.0.0.1 Validity Period Begin Time 2019-07-18 08:00:00 End Time 2019-07-19 08:00:00 Time Range Sun Setting Mon Setting Tue Setting Wed Setting Thu Setting Fri Setting Sat Setting Save Cancel

Step 3 Configure user parameters.

Table 4-38 Description of user parameters (1)

ParameterDescription
UsernameUser's unique identification. You cannot use existed user name.
Password Enter password and confirm it again.
Confirm PasswordThe password must consist of 8 to 32 non-blank characters and contain at least two types of characters among upper case, lower case, number, and special character (excluding '" ;: &).
Group NameThe group that users belong to. Each group has different authorities.
Memo Describe the user.
Operation PermissionSelect authorities as needed.We recommend you give fewer authorities to normal users than advance users.
Restricted LoginSet the PC address that allows the defined user to log in to the camera and the validity period and time range. You can log in to web with the defined IP in the defined time range of validity period.IP address: You can log in to web through the PC with the set IP月底 validity period: You can log in to web in the set validity period.Time range: You can log in to web in the set time range.Set as following:1. Select IP Address: Select IP type and set IP address.IP Address: Enter the IP address of the host to be added.IP segment: Enter the start address and end address of the host to be added.Select Validity Period: Set the begin time and end time.Select Time Range: Set the time range that allow user to log in. For details, see "5.1.1.1 Setting Period".

Step 4 Click Save.
The newly added user is displayed in the user name list.

- Edit user information

Click to change password, group, memo, operation authorities, and login authorities.

Dahua Technology IPC-HDBW3841E-AS - Related Operations - 1

You can only change the password of the admin.

The methods of changing password vary with different accounts.

  • Login with the admin account, you can change password through Old Password and Admin Account.
  • Login with non-admin account (an added account with the permission of user management), you can change password through Old Password.
  • Old Password: Change the password through entering the old password to be changed, and then the new password.

Figure 4-101 Change password through old password (login with non-admin account)
Dahua Technology IPC-HDBW3841E-AS - Related Operations - 2

text_image Modify User Username 11 Modify Password Old Password New Password The minimum pass phrase length is 8 characters Weak Medium Strong Confirm Password Group Name user Memo Authority All Live Playback Save Cancel
  • Admin Account: Change the password through entering the admin password, and then the new password for the non-admin account to be changed.

Figure 4-102 Change password through admin password (login with admin account)
Dahua Technology IPC-HDBW3841E-AS - Related Operations - 3

text_image Modify User Username 11 ✓ Modify Password Modification Mode Admin Account Admin Username admin Admin Password New Password The minimum pass phrase length is 8 characters Weak Medium Strong Confirm Password Group Name user Memo
  • Delete users
    Click to delete the added users.

Dahua Technology IPC-HDBW3841E-AS - Related Operations - 4

Admin account cannot be deleted.

• View the authorities

If the current account has with the permission of user management, click 🔒 to view the login authorities of other accounts. If not, you can only view the login authorities of the current account.

4.8.3.2 Adding User Group

You have two groups named admin and user by default, and you can add new group, delete added group or modify group authority and memo.

Step 1 Select Setting > System > Account > Account > Group Name.

Figure 4-103 Group name
Dahua Technology IPC-HDBW3841E-AS - Adding User Group - 1

text_image Account Onvif User Anonymous Login Username Group Name No. Group Name Memo Modify Delete 1 admin administrator group 2 user user group Authority User Live Playback System System Info Manual Control File Backup Storage Event Network Peripheral AV Parameter PTZ Security Maintenance Add Group

Step 2 Click Add Group.

Figure 4-104 Add group
Dahua Technology IPC-HDBW3841E-AS - Adding User Group - 2

text_image Add Group Group Name Must Memo Authority All Live Playback System System Info Save Cancel

Step 3 Enter the group name and memo, and then select group authorities.

The default authorities of Admin group includes live, playback, storage, file backup, user, system, system info, manual control, maintenance, peripheral, PTZ, security, network, event and AV parameters; the default authorities of User group include live and playback.

Table 4-39 Description of user group parameters

Group AuthorityAdminUserFunctions
User YES NAAdd, delete and check user/user group.
LiveYESYESReal-time stream view.
PlaybackYESYESPlayback view.
System YES NASystem time setting and more.
System Info YES NAVersion information, system logs and more.
Manual ControlYESNAPTZ settings.
File BackupYESNAFile backup.
Storage YES NAStorage point configuration, snapshot recording time configuration, SFTP configuration and more.
Event YES NAVideo detection settings, audio detection settings, alarm settings and more.
Network YES NAIP settings, SMTP settings, SNMP settings, AP Hotspot settings and more.
Peripheral YES NAExternal light, wiper and serial port settings.
AV Parameter YES NACamera property settings, audio and video settings and more.
PTZ YES NAPreset settings, tour settings and more.
Security YES NAHTTPS settings, RTSP over TLS settings and more.
Maintenance YES NAAutomatic maintenance settings and more.

Dahua Technology IPC-HDBW3841E-AS - Adding User Group - 3

  • Any user in the Admin group has User authorities to modify group authorities. The User group does not have this authorities.
  • The function of the device correspond to the authority control respectively. Only user with specified authority can use corresponding function; the Admin group has all the authorities.

Step 4 Click Save to finish configuration.

The newly added group displays in the group name list.

Dahua Technology IPC-HDBW3841E-AS - Adding User Group - 4

  • After adding group, click 🔥 to modify group memo or authorities; click 🔥 to delete the added group, admin group and user group cannot be deleted.
  • Click in the row of admin group or user group to modify group memo.

4.8.3.3 ONVIF User

You can add, delete ONVIF user, and modify their passwords.

Procedure

Step 1 Select Setting > System > Account > ONVIF User.

Figure 4-105 ONVIF user
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Account Onvif User No. Username Group Name Modify Delete 1 admin admin Add User

Step 2 Click Add User.

Figure 4-106 Add user
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Add User Username Must Password The minimum pass phrase length is 8 characters Weak Middle Strong Confirm Password Group Name admin Save Cancel

Step 3 Configure user parameters.

Table 4-40 Description of user parameters

ParameterDescription
UsernameUser's unique identification. You cannot use existed user name.
Password Enter passwordand confirm it again.
Confirm PasswordThe password must consist of 8 to 32 non-blank characters and contain at least two types of characters among upper case, lower case, number, and special character (excluding '";: &).
Group NameThe group that users belong to. Each group has different authorities.

Step 4 Click Save.

The newly added user displays in the user name list.

- Edit user information

Click to change password, group, memo, operation authorities, and login authorities.

Dahua Technology IPC-HDBW3841E-AS - - Edit user information - 1

You can only change the password of the admin.

The methods of changing password vary with different accounts.

Log in with admin account, you can change password through Old Password and Admin Account.

The password of admin account can be changed through Old Password only.

- Login with non-admin account (an added account with the permission of user management), you can change password through Old Password.

- Old Password: Change the password through entering the old password to be changed, and then the new password.

Figure 4-107 Change password through old password (login with non-admin account)
Dahua Technology IPC-HDBW3841E-AS - - Edit user information - 2

text_image Modify User Username 11 Modify Password Old Password New Password The minimum pass phrase length is 8 characters Weak Medium Strong Confirm Password Group Name user Memo Authority All Live Playback Save Cancel
  • Admin Account: Change the password through entering the admin password, and then the new password for the non-admin account to be changed.

Figure 4-108 Change password through admin password (login with admin account)
Dahua Technology IPC-HDBW3841E-AS - - Edit user information - 3

text_image Modify User Username 11 ✓ Modify Password Modification Mode Admin Account Admin Username admin Admin Password New Password The minimum pass phrase length is 8 characters Weak Medium Strong Confirm Password Group Name user Memo
  • Delete users
    Click to delete the added users.

Dahua Technology IPC-HDBW3841E-AS - - Edit user information - 4

Admin account cannot be deleted.

• View the authorities

If the current account has the permission of user management, click 🔒 to view the login authorities of other accounts. If not, you can only view the login authorities of the current account.

4.8.4 Safety

You can configure system service, HTTPS, and firewall.

4.8.4.1 System Service

Configure the IP hosts (devices with IP address) that are allowed to visit the device. Only the hosts in the trusted sites list can log in to the web interface. This is to enhance network and data security.

Step 1 Select Setting > System > Safety > System Service.

Figure 4-109 System service
Dahua Technology IPC-HDBW3841E-AS - System Service - 1

text_image System Service HTTPS Firewall SSH ✓ Enable Multicast/Broadcast ✓ Enable Password Reset ✓ Enable CGI Service ✓ Enable Onvif Service ✓ Enable Genetec Service ✓ Enable Audio and Video Tr... ✓ Enable Mobile Push ✓ Enable *Please make sure matched device or software supports video decryption function. Default Refresh Save

Step 2 Enable the system service according to the actual needs.

Table 4-41 Description of system service parameters

FunctionDescription
SSHYou can enable SSH authentication to perform safety management.
Multicast/Broadcast SearchEnable this function, and then when multiple users are previewing the device video image simultaneously through network, they can find your device with multicast/broadcast protocol.
Password Reset Manage system security with this function.
CGI ServiceEnable this function, and then other devices can access through this service.
Onvif ServiceEnable this function, and then other devices can access through this service.
Genetec ServiceEnable this function, and then other devices can access through this service.
Audio and Video Transmission EncryptionEnable to encrypt audio/video transmission.Make sure that the other devices and software that working together with the camera support video decryption.
Mobile PushEnable this function, and then the system would send the snapshot that was taken when alarm is triggered to your phone, this is enabled by default.

Step 3 Click Save.

4.8.4.2 HTTPS

Create a certificate or upload an authenticated certificate, and then you can log in through HTTPS with your PC. The HTTPS can protect page authenticity on all types of websites, secure accounts, and keep user communications, identity, and web browsing private.

Step 1 Select Setting > Network > HTTPS.

Figure 4-110 HTTPS
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 1

text_image System Service HTTPS Firewall Enable HTTPS Protocol Version Enable TLSV1.0 Create Certificate Create Request Created Request Created Delete Install Download Install Signed Certificate Certificate Path Browse... Certificate Key Path Browse... Uploaded Certificate Installed Certificate Installed Delete Attribute Refresh Save

Step 2 Create a certificate or upload an authenticated certificate.
- For creating a certificate, click Create.

Figure 4-111 HTTPS dialog box
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 2

text_image HTTPS Country *e.g. CN IP or Domain name * Validity Period 365 Day*Range :1-5000 Province None Location None Organization None Organization Unit None Email Create Cancel

- For uploading the authenticated certificate, click Browse to select the certificate and certificate key, click Upload to upload them, and then skip to Step5.

Step 3 Enter the required information and then click Create.

Dahua Technology IPC-HDBW3841E-AS - HTTPS - 3

The entered IP or Domain name must be the same as the IP or domain name of the device.

Step 4 Click Install.

Figure 4-112 Certificate installation
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 4

text_image HTTPS Enable HTTPS Create Certificate Create Request Created Request Created: HTTP=http://172.12.80.250/C-CN.ST-none_L=none. Delete Install Download Install Signed Certificate Certificate Path Browse... Certificate Key Path Browse... Upload... Certificate Installed Certificate Installed Delete... Attribute Refresh Save

Step 5 Click Download to download root certificate.

Step 6 Click Download Root Certificate.

Figure 4-113 File download
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 5

text_image File Download - Security Warning Do you want to open or save this file? Name: ca.crt Type: Security Certificate From: Open Save Cancel While files from the Internet can be useful, this file type can potentially harm your computer. If you do not trust the source, do not open or save this software. What's the risk?

Step 7 Click Open.

Figure 4-114 Certificate information
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 6

text_image Certificate General Details Certification Path Certificate Information This CA Root certificate is not trusted. To enable trust, install this certificate in the Trusted Root Certification Authorities store. Issued to: Product Root CA Issued by: Product Root CA Valid from 2013-6-18 to 2023-6-16 Install Certificate... Issuer Statement OK

Step 8 Click Install Certificate.

Figure 4-115 Certificate import wizard (1)
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 7

text_image Certificate Import Wizard Welcome to the Certificate Import Wizard This wizard helps you copy certificates, certificate trust lists, and certificate revocation lists from your disk to a certificate store. A certificate, which is issued by a certification authority, is a confirmation of your identity and contains information used to protect data or to establish secure network connections. A certificate store is the system area where certificates are kept. To continue, click Next.

Step 9 Click Next.

Figure 4-116 Certificate store
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 8

text_image Certificate Import Wizard Certificate Store Certificate stores are system areas where certificates are kept. Windows can automatically select a certificate store, or you can specify a location for Automatically select the certificate store based on the type of certificate Place all certificates in the following store Certificate store: Browse... < Back Next > Cancel

Step 10 Select the storage location and click Next.

Figure 4-117 Certificate import wizard (2)
Dahua Technology IPC-HDBW3841E-AS - HTTPS - 9

text_image Certificate Import Wizard Completing the Certificate Import Wizard You have successfully completed the Certificate Import wizard. You have specified the following settings: Certificate Store Selected Automatically determined by t Content Certificate < Back Finish Cancel

Step 11 Click Finish and a dialog box showing The import was successful pops up.

Figure 4-118 Import succeeds
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text_image Certificate Import Wizard The import was successful. OK

4.8.4.3 Firewall

Configure Network Access, PING prohibited and Prevent Semijoin to enhance network and data security.

• Network Access: Set trusted list and restricted list to limit access.

Allowlist: Only when the IP/MAC of your PC in the allowlist, can you access the camera. Ports are the same.
◇ Blocklist: When the IP/MAC of your PC is in the blocklist, you cannot access the camera. Ports are the same.

  • PING prohibited: Enable PING prohibited function, and the camera will not respond to the ping request.
  • Prevent Semijoin: Enable Prevent Semijoin function, and the camera can provide service normally under Semijoin attack.

Dahua Technology IPC-HDBW3841E-AS - Firewall - 1

- You cannot set allowlist or blocklist for camera IP or MAC addresses.

  • You cannot set allowlist or blocklist for port MAC addresses.
  • When the IP addresses of the camera and your PC are in the same LAN, MAC verification takes effect.
  • When you access the camera through internet, the camera verifies the MAC address according to the router MAC.

This section takes Network Access as an example.

Step 1 Select Setting > System > Safety > Firewall.

Figure 4-119 Firewall
Dahua Technology IPC-HDBW3841E-AS - Firewall - 2

text_image System Service HTTPS Firewall Rule Type Network Access Enable ✓ Mode Allowlist Blocklist Only the listed IP addresses/MAC are allowed to visit corresponding ports of the device. ✓ IP address /MAC address Port Modify Delete ✓ Device All Ports ✓ ✓ Device All Ports ✓ ✓ Device All Ports ✓ ✓ Device All Ports ✓ Add IP/MAC Default Refresh Save

Step 2 Select Network Access from Rule Type list, and then select the Enable check box.

  • Enable PING prohibited and Prevent Semijoin, and click Save. You do not need to configure parameters.
  • Enable Network Access, and configure allowlist and blocklist.

Select the mode: Allowlist and Blocklist.

◇ Click Add IP/MAC.

Figure 4-120 Add IP/MAC
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text_image Add IP/MAC Rule Type IP Address IP Version IPv4 IP Address 1 Device All Ports Device Start Server... 1 Device End Server... 1 OK Cancel

Step 3 Configure parameters.

Table 4-42 Description of adding IP/MAC parameters

ParameterDescription
Rule TypeSelect IP address, IP segment, MAC address or all IP addresses.IP address: Select IP version and enter the IP address of the host to be added.IP segment: Select IP version and enter the start address and end address of the segment to be added.MAC address: Enter MAC address of the host to be added.All IP addresses: Set all IP addresses in allowlist or restricted list.
Device All PortsSet access ports. You can select all ports or the ports in defined areas.Device all ports: Set all IP port in allowlist or Blocklist. When selecting BlockList in Mode, and All IP Address in Rule Type, you cannot select the Device All Ports check box.Device start server port and Device end server port: Set Device start server port and device end server port, and the range is 1–65535.
Device Start Server Port
Device End Server Port

Step 4 Click OK, and the Firewall interface is displayed.
Step 5 Click Save.

4.8.5 Peripheral

4.8.5.1 Serial Port Settings

Set the serial port of the external device.

Step 1 Select Setting > System > Peripheral > Serial Port Setting.

Figure 4-121 Serial port settings
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text_image Serial Port Settings External Light Wiper Address 1 Baud Rate 9600 Data Bit 8 Stop Bit 1 Parity NONE Default Refresh Save

Step 2 Configure serial port settings parameters.

Table 4-43 Description of serial port settings parameters

ParameterDescription
AddressThe corresponding device address. It is 1 by default.[IMAGE]Make sure that the address is the device address; otherwise you cannot control the device.
Baud RateSelect the baud rate for the camera. It is 9600 by default.
Date Bit It is 8 by default.
Stop Bit It is 1 by default.
Parity It isNone by default.

Step 3 Click Save.

4.8.5.2 External Light

You need to configure external light mode when the external light is used.

Prerequisites

  • Connect external light with RS-485 port.
  • You have configured serial port parameters. For details, see "4.8.5.1 Serial Port Settings".

Procedure

Step 1 Select Setting > System > Peripheral > External Light.

Figure 4-122 External light
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Serial Port Settings External Light Wiper 2000-01-01 03.45.55 Work Mode Auto Auto Mode Time Light Brightness - 0 + 128 Period setting Setting Default Refresh Save

Step 2 Configure external light work mode.

Table 4-44 Description of external light parameters

ParameterDescription
Work ModeOff: Turn off the external light.Manual: Set the light brightness manually.Auto: The camera turns on or turns off the light according to the light time and photoresister automatically.
Auto ModeTime: When selecting Time in Auto Mode, click Setting to set the arming period. During the arming period, the external light is on. For details of arming period setting, see "5.1.1.1 Setting Period".Photoresister: When you select Photoresister in Auto Mode, the system turns on the external light according to the brightness automatically.
Light BrightnessSet the brightness of the external light.

Step 3 Click Save.

4.8.5.3 Wiper

Step 1 Select Setting > System > Peripheral > Peripheral > Wiper.

Figure 4-123 Wiper
Dahua Technology IPC-HDBW3841E-AS - Wiper - 1

text_image Serial Port Settings External Light Wiper 2000-01-01 03.59.58 Wiper Interval Time 10 s (0~255) Start Stop Once Wash Time Wash Everyday 04 : 00 Once Default Refresh Save

Step 2 Configure wiper work mode.

Table 4-45 Description of wiper parameters

ParameterDescription
Interval TimeThe interval time between stop mode and start mode. For example, set the time to 10 s, and the wiper will work every 10 s.
StartSet the work status of the wiper.Start: Click Start, and the wiper works as the set interval time.Stop: Click Stop, and the wiper stops working.Once: Click Once, and the wiper works once.
Stop
Once
Time WashSelect the Time Wash check box and set the time, and then the wiper will work as the set time. Click Once, and the wiper works once. It can be used to check whether the wiper can work normally.

Step 3 Click Save.

5 Event

This chapter introduces intelligent event settings, including smart track, panoramic calibration, video detection, audio detection, smart plan, IVS, face detection, face recognition, people counting, heat map, video Metadata, alarm, and abnormality.

5.1 Setting Alarm Linkage

5.1.1 Alarm Linkage

When configuring alarm events, select alarm linkages (such as record, snapshot). When the corresponding alarm is triggered in the configured arming period, the system will alarm. Interfaces might vary with different events, and the actual interface shall prevail.

Figure 5-1 Alarm linkage
Dahua Technology IPC-HDBW3841E-AS - Alarm Linkage - 1

text_image Enable Relay-in Alarm1 Mode Alarm Period Setting Anti-Dither 0 s (0~100) Sensor Type NO Record Record Delay 10 s (10~300) Relay-out Alarm Delay 10 s (10~300) Send Email Audio Linkage Play Count 3 (1~10) File alarm.wav Warning Light Mode Flicker Flicker Frequency Medium Duration 10 s (5~30) Period Setting Snapshot Default Refresh Save

5.1.1.1 Setting Period

Set arming periods. The system only performs corresponding linkage action in the configured period.

Step 1 Click Setting next to Period.

Figure 5-2 Period
Dahua Technology IPC-HDBW3841E-AS - Setting Period - 1

text_image Period Sun Mon Tue Wed Thu Fri Sat Setting Setting Setting Setting Setting Setting Setting Setting All Sun Mon Tue Wed Thu Fri Sat Period1 00 : 00 : 00 - 23 : 59 : 59 Period2 00 : 00 : 00 - 23 : 59 : 59 Period3 00 : 00 : 00 - 23 : 59 : 59 Period4 00 : 00 : 00 - 23 : 59 : 59 Period5 00 : 00 : 00 - 23 : 59 : 59 Period6 00 : 00 : 00 - 23 : 59 : 59 Save Cancel

Step 2 Set arming periods. Alarms will be triggered in the time period in green on the timeline.

• Method 1: Directly press and drag the left mouse button on the timeline.
• Method 2: Enter an actual time period.

  1. Click Setting next to a day.
  2. Select a time period to be enabled.
  3. Enter start time and end time of a time period.

Dahua Technology IPC-HDBW3841E-AS - Setting Period - 2

Select All or check boxes of some days to set the time period of multiple days at one time.
◇ You can set 6 time periods per day.

Step 3 Click Save.

5.1.1.2 Record Linkage

The system can link record channel when an alarm event occurs. After alarm, the system stops recording after an extended time period according to the Record Delay setting.

To use the record linkage function, set record plan for motion detection alarm and enable auto recording in record control.

5.1.1.2.1 Setting Record Plan

After the corresponding alarm type (Normal, Motion, and Alarm) is enabled, the record channel links recording.

Step 1 Select Setting > Storage > Schedule > Record.

Figure 5-3 Record
Dahua Technology IPC-HDBW3841E-AS - Setting Record Plan - 1

text_image Record Snapshot Holiday Schedule Normal Motion Alarm Sun Mon Tue Wed Thu Fri Sat Holiday Setting Setting Setting Setting Setting Setting Setting Default Refresh Save

Step 2 Set record plan.

Green represents normal record plan (such as timing recording); yellow represents motion record plan (such as recording triggered by intelligent events); red represents alarm record plan (such as recording triggered by alarm-in).

  • Method one: Select a record type, such as Normal, and directly press and drag the left mouse button to set the time period for normal record on the timeline.
    • Method two: Enter an actual time period.

1. Click Setting next to a day.

Figure 5-4 Setting (record time period)
Dahua Technology IPC-HDBW3841E-AS - Click Setting next to a day. - 1

text_image Setting All Sun Mon Tue Wed Thu Fri Sat Holiday Period1 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period2 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period3 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period4 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period5 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period6 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Save Cancel
  1. Select a day, and the alarm type next to a period, and then set the period.

Dahua Technology IPC-HDBW3841E-AS - Click Setting next to a day. - 2

Select All or check boxes of some days to set the time period of multiple days at one time.
◇ You can set 6 time periods per day.

Step 3 Click Save.

5.1.1.2.2 Setting Record Control

Set parameters such as pack duration, pre-event record, disk full, record mode, and record stream.

Dahua Technology IPC-HDBW3841E-AS - Setting Record Control - 1

Make sure that the SD card is authenticated before recording if you use Dahua smart card. For details, see "4.5.2.5 Path".

Step 1 Select Setting > Storage > Record Control.

Figure 5-5 Record control
Dahua Technology IPC-HDBW3841E-AS - Setting Record Control - 2

text_image Record Control Pack Duration 8 Min (1-120) Pre-event Record 5 s (0-5) Disk Full Overwrite Record Mode Auto Manual Off Record Stream Main Stream Default Refresh Save

Step 2 Set parameters.

Table 5-1 Description of record control parameters

ParameterDescription
Pack DurationThe time for packing each video file.
Pre-event RecordThe time to record the video in advance of a triggered alarm event. For example, if the pre-event record is set to be 5 s, the system saves the recorded video of 5 s before the alarm is triggered.[455c]When an alarm or motion detection links recording, and the recording is not enabled, the system saves the video data within the pre-event record time to the video file.
Disk FullRecording strategy when the disk is full.Stop: Stop recording when the disk is full.Overwrite: Cyclically overwrite the earliest video when the disk is full.
Record ModeWhen you select Manual, the system starts recording; when you select Auto, the system starts recording in the configured time period of record plan.
Record Stream Select recordstream, including Main Stream and Sub Stream.

Step 3 Click Save.

5.1.1.2.3 Setting Record Linkage

On the alarm event setting interface (such as the motion detection interface), select Record and set Record Delay to set alarm linkage and record delay.

After Record Delay is configured, alarm recording continues for an extended period after the alarm ends.

Figure 5-6 Record linkage
Dahua Technology IPC-HDBW3841E-AS - Setting Record Linkage - 1

text_image Record Record Delay 10 s (10~300)

5.1.1.3 Snapshot Linkage

After snapshot linkage is configured, the system can automatically alarm and take snapshots when an alarm is triggered.

After Motion is enabled in Snapshot, the system takes snapshots when an alarm is triggered. For querying and setting snapshot storage location, see "4.5.2.5 Path".

5.1.1.3.1 Setting Snapshot Plan

According to the configured snapshot plan, the system enables or disables snapshot at corresponding time.

Step 1 Select Setting > Storage > Schedule > Snapshot.

Figure 5-7 Snapshot
Dahua Technology IPC-HDBW3841E-AS - Setting Snapshot Plan - 1

text_image Record Snapshot Holiday Schedule ✓ Normal ✓ Motion ✓ Alarm Sun Mon Tue Wed Thu Fri Sat Holiday Setting Setting Setting Setting Setting Setting Setting Setting Default Refresh Save

Step 2 Select snapshot type and set time period.

Green represents normal snapshot plan (such as timing snapshot); yellow represents motion snapshot plan (such as snapshot triggered by intelligent events); red represents alarm snapshot plan (such as snapshot triggered by alarm-in).

- Method one: Select snapshot type, such as Normal, and directly press and drag the left mouse button to set time period for normal snapshot on the timeline.

• Method two: Enter an actual time period.

  1. Click Setting next to a day.

Figure 5-8 Setting (snapshot time period)
Dahua Technology IPC-HDBW3841E-AS - Setting Snapshot Plan - 2

text_image Setting All Sun Mon Tue Wed Thu Fri Sat Holiday Period1 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period2 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period3 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period4 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period5 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Period6 00 : 00 : 00 - 23 : 59 : 59 Normal Motion Alarm Save Cancel
  1. Select a day, and the alarm type next to a period. Then set the period.

Dahua Technology IPC-HDBW3841E-AS - Setting Snapshot Plan - 3

Select All or check boxes of some days to set the time period of multiple days at one time.
◇ You can set 6 time periods per day.

  1. You can set 6 time periods per day.

Step 3 Click Save.

5.1.1.3.2 Setting Snapshot Linkage

On the alarm event setting interface (such as the motion detection interface), select Snapshot and set alarm linkage snapshot.

Figure 5-9 Snapshot linkage
Dahua Technology IPC-HDBW3841E-AS - Setting Snapshot Linkage - 1

text_image Snapshot

5.1.1.4 Relay-out Linkage

When an alarm is triggered, the system can automatically link with relay-out device.

On the alarm event setting interface (such as the motion detection interface), select Alarm and set Alarm Delay.

When alarm delay is configured, alarm continues for an extended period after the alarm ends.

Figure 5-10 Relay-out linkage
Dahua Technology IPC-HDBW3841E-AS - Relay-out Linkage - 1

text_image ✓ Relay-out Alarm Delay 10 s (10~300)

5.1.1.5 Email Linkage

When an alarm is triggered, the system will automatically send an email to users.

Email linkage takes effect only when SMTP is configured. For details, see "4.6.5 SMTP (Email)".

Figure 5-11 Email linkage
Dahua Technology IPC-HDBW3841E-AS - Email Linkage - 1

text_image Send Email

5.1.1.6 PTZ Linkage

When an alarm is triggered, the system links PTZ to do some operations. For example, the system links PTZ to rotate to the preset X.

Figure 5-12 PTZ linkage
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text_image PTZ Activation Preset No. 1 (1~255)

5.1.1.7 Warning Light Linkage

When an alarm is triggered, the system can automatically enable the warning light.

Set Mode, Flicker Frequency, Duration, and Period.

- Mode: The display mode of the warning light when an alarm is triggered. It includes Normally on and Flicker. When setting Flicker as the mode, you need to set the flicker frequency.

Dahua Technology IPC-HDBW3841E-AS - Warning Light Linkage - 1

For the camera with red and blue alarm light, you can only select Flicker in Mode.

  • Duration: After setting warning light duration, the warning light is turned off after an extended time of period after an alarm. It is 5 seconds–30 seconds.
  • Period: The period for using warning light. When an alarm triggered during the configured period, the system links warning light. For the configuration, see "5.1.1.1 Setting Period".

Figure 5-13 Warning light linkage
Dahua Technology IPC-HDBW3841E-AS - Warning Light Linkage - 2

text_image Warning Light Mode Flicker Flicker Frequency Medium Duration 10 s (5~30) Period Setting

5.1.1.8 Audio Linkage

The system broadcasts alarm audio file when an alarm event occurs. Select Setting > Camera > Audio > Alarm Audio to set alarm audio file.

Figure 5-14 Audio linkage
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text_image Audio Linkage Play Duration 10 s

5.1.2 Subscribing Alarm

5.1.2.1 About Alarm Types

For alarm types and preparations of alarm events, see Table 5-2.

Table 5-2 Description of alarm types

Alarm TypeDescriptionPreparation
Motion DetectionThe alarm is triggered when moving object is detected.Motion detection is enabled. For details, see "5.4.1 Setting Motion Detection".
Disk FullThe alarm is triggered when the free space of SD card is less than the configured value.The SD card no space function is enabled. For details, see "5.19.1 Setting SD Card".
Disk ErrorThe alarm is triggered when there is failure or malfunction in the SD card.SD card failure detection is enabled. For details, see "5.19.1 Setting SD Card".
Video TamperingThe alarm is triggered when the camera lens is covered or there is defocus in video images.Video tampering is enabled. For details, see "5.4.2 Setting Video Tampering".
External AlarmThe alarm is triggered when there is external alarm input.The device has alarm input port and external alarm function is enabled. For details, see "5.18 Setting Relay-in".
Illegal AccessThe alarm is triggered when the number of consecutive login password error is up to the allowable number.Illegal access detection is enabled. For details, see "5.19.3 Setting Illegal Access".
Audio DetectionThe alarm is triggered when there is audio connection problem.Abnormal audio detection is enabled. For details, see "5.6 Setting Audio Detection".
IVSThe alarm is triggered when intelligent rule is triggered.Enable IVS, crowd map, face detection or people counting, and other intelligent functions.
Scene ChangingThe alarm is triggered when the device monitoring scene changes.Scene changing detection is enabled. For details, see "5.4.3 Setting Scene Changing".
Voltage DetectionThe alarm is triggered when the device detects abnormal voltage input.Voltage detection is enabled. For details, see "5.19.4 Setting Voltage Detection".
Security ExceptionThe alarm is triggered when the device detects malicious attack.Voltage detection is enabled. For details, see "5.19.5 Setting Security Exception".

5.1.2.2 Subscribing Alarm Information

You can subscribe alarm event. When a subscribed alarm event is triggered, the system records detailed alarm information at the right side of the interface.

Dahua Technology IPC-HDBW3841E-AS - Subscribing Alarm Information - 1

Functions of different devices might vary.

Step 1 Click the Alarm tab.

text_image Alarm Type Motion Detection Disk Error External Alarm Audio Detection Scene Changing Disk Full Video Tampering Illegal Access IVS Security Exception Operation Prompt Alarm Tone Play Alarm Tone Tone Path OK/OK- No. Time Alarm Type Source IP Alarm Channel

Step 2 Select Alarm Type according to the actual need.

- Select Prompt. The system prompts and records alarm information according to actual conditions.

When the subscribed alarm event is triggered and the Alarm interface is not displayed, the 📄 is displayed on the Alarm tab and the alarm information is recorded automatically. Click the Alarm tab, and this icon disappears.

When the subscribed alarm event is triggered and the Alarm interface is displayed, the corresponding alarm information is displayed in the alarm list at the right side of the Alarm interface.

- Select Play Alarm Tone, and select the tone path.

The system would play the selected audio file when the selected alarm is triggered.

5.2 Setting Smart Track

After setting calibration and parameters for smart track, the tracking speed dome can automatically link to a corresponding position and track an object till it is out of the monitoring range or the set tracking time is reached when the intelligent rules for panoramic camera triggers an alarm.

5.2.1 Setting Calibration Parameters for Smart Track

The camera has calibration parameters by default, and you can modify the parameters manually when the effect is not good with default setting.

Dahua Technology IPC-HDBW3841E-AS - Setting Calibration Parameters for Smart Track - 1

Auto calibration mode is available on some select models.

Step 1 Select Setting > Event > Smart Track > Smart Track.

Step 2 Configure calibration parameters.

- Auto calibration

Select Auto in Calibration Mode, and then click Start Calibration.

Figure 5-16 Auto calibration
Dahua Technology IPC-HDBW3841E-AS - Setting Calibration Parameters for Smart Track - 2

text_image Smart Track Alarm Track 14312kbps 8192x2700 Calibration Mode Auto Start Calibration Default Refresh Save

- Manual calibration

Select Manual in Calibration Mode, select the channel that you need, and then add calibration point for it in the live image.

Figure 5-17 Manual calibration (1)
Dahua Technology IPC-HDBW3841E-AS - Setting Calibration Parameters for Smart Track - 3

text_image Smart Truck Alarm Track 20 1976-19 21 12:48 P.49 X T39 5 2/2 1 2 3 4 Position Speed Zoom + Focus + Inst + Rmbai Parameters Coordinals PTZ Camera Coordinals Center Status Status 1 1502,3060 4863,1660 1374,311.7 2 1045,4052 5299,2879 1374,311.7 3 1426,2660 4099,473 1374,311.7 4 1453,3159 4071,1851 1374,311.7 Default Refresh Save

Figure 5-18 Manual calibration (2)
Dahua Technology IPC-HDBW3841E-AS - Setting Calibration Parameters for Smart Track - 4

text_image Smart Track Alarm Track 18100Kbps 8192x2700 G1-8 G2-6 Calibration Mode Manual Start Calibration Scene1 Scene2 Scene3 Scene4 Number Panorama PTZ Camera Center Save Delete + Coordinates Coordinates 1 597,4909 2669,4421 1621,-71,7 2 1826,499 6829,1560 1621,-71,7 3 1073,2193 7252,4876 1621,-71,7 4 1633,1393 6111,3023 1621,-71,7 Clear Calibration... Default Refresh Save Speed 5

1) Adjust the speed dome lens and turn it to the same view as the chosen lens, and then click .

The calibration boxes are displayed in both images.

2) Pair each box in the two images, and keep the paired boxes at the same spot of the live view.
3) Click .

You need at least 4 pairs of calibration boxes to ensure the views of the speed dome and the panoramic camera as similar as possible.

Step 3 Click Save.

5.2.2 Enabling Alarm Track

Alarm Track is disabled by default. Smart Track is enabled only after Alarm Track is enabled and intelligent rules of the panoramic camera are configured. Smart Track is supported only when rules of crowd map, intrusion and tripwire are triggered. See "5.8 Setting IVS" and "5.9 Setting Crowd Map".

Step 1 Select Setting > Event > Smart Track > Alarm Track.

Figure 5-19 Alarm track
Dahua Technology IPC-HDBW3841E-AS - Enabling Alarm Track - 1

text_image Smart Track Alarm Track Enable Auto Track On Off Track Time Continue till object disa Idle Time 5 s (1~1800) Idle Position Preset1 Default Refresh Save

Step 2 Select the Enable check box to enable track linkage.

After enabling the function, manual positioning, manual tacking and auto tracking take effect.

Step 3 Set parameters.

Table 5-3 Description of alarm track parameters

ParameterDescription
Auto TrackSelect On, and the speed dome automatically links to a corresponding position and tracks an object when the intelligent rules of the panoramic camera trigger alarms.
Track TimeSet the alarm track time.Before an object disappears: The speed dome would automatically link to a corresponding position and tracks an object until the object moves out of the monitoring range when the intelligent rules of the panoramic camera trigger alarms.Custom: Set the auto alarm track time of the speed dome.
Idle TimeIt is an interval from the end of alarm track of the speed dome to the start of idle mode.Set Idle Time and Idle Position. If no event needs to be tracked after the configured idle time, the device automatically rotates to the set idle position. For example, the Idle Time is set to be five seconds and the Idle Position is set to be preset point 1. When the speed dome does not start tracking after five seconds, it automatically rotates to preset 1.To set Idle Position, first set a preset point. For preset point, see "4.3.2.1 Preset".
Idle Position

Step 4 Click Save.

5.3 Setting Panoramic Calibration

The device has calibration parameters by default, and you can modify the parameters manually

when the effect is not good with default setting. Before manually calibrating a channel, clear all default calibration parameters.

Channel 1 is a PTZ camera. You should calibrate the scene coordinates of Channel 1 and other channels. Take Channel 2 as an example.

Step 1 Select Setting > Event > Panoramic Calibration.

Figure 5-20 Panoramic calibration
Dahua Technology IPC-HDBW3841E-AS - Setting Panoramic Calibration - 1

text_image Panoramic Calibration Please adjust the PTZ angle of channel 1 via PTZ control interface, make the center point of channel 1 basically concide with the green point of calibration 1 or calibration 2 screen, then it is to make calibration. Calibrate1 Calibrate2 Position Speed 5 Channel 2 Number Panorama Coordinates PTZ Camera Coordinates Center Save Delete 1 1085,2895 2446,3931 1328,311,0 2 1108,6328 3678,7643 1328,311,0 3 2020,1219 2775,931 1328,311,0 4 2459,7205 5574,7301 1328,311,0 Default Refresh Save

Step 2 Select channel 2, and then select a calibration number under the video images in turns (See Figure 5-21) to add calibration points to the corresponding video images. Take Calibrate 1 as an example.

Figure 5-21 Select a calibration number
Dahua Technology IPC-HDBW3841E-AS - Setting Panoramic Calibration - 2

1) Adjust the PTZ angle of channel 1 through the PTZ control interface to rotate the center of channel 1 to a position aligned with the green point in Calibrate 1 image, and then click .

Calibration box is displayed in images of Channel 1 and Calibrate 1

2) Respectively drag calibration boxes on images of Channel 1 and Calibrate 1 to the corresponding positions. Click 📄 to save this pair of calibration boxes.

You are recommended to drag calibration box to a static position with clear edges in

the image. This can ensure the edges can be accurately distinguished by the camera.

After the calibration record is saved, the calibration box is displayed in yellow.

Repeat 1) to 2) to add at least 4 pairs of calibration points to each calibration picture.

Step 3 Click Save.

5.4 Setting Video Detection

Check whether there are considerable changes on the video by analyzing video images. In case of any considerable change on the video (such as moving object, fuzzy image), the system performs an alarm linkage.

5.4.1 Setting Motion Detection

The system performs an alarm linkage when the moving object appears on the image and its moving speed reaches the preset sensitivity.

Dahua Technology IPC-HDBW3841E-AS - Setting Motion Detection - 1

  • If you enable motion detection and smart motion detection simultaneously, and configure the linked activities, the linked activities take effect as following:
    When Motion Detection is triggered, the camera will record and take snapshots, but other configured linkages such as sending emails, PTZ operation will not take effect.
    When Smart Motion Detection is triggered, all the configured linkages take effect.
  • If you only enable motion detection, all the configured linkages take effect when motion detection is triggered.

Step 1 Select Setting > Event > Video Detection > Motion Detection.

Figure 5-22 Motion detection
Dahua Technology IPC-HDBW3841E-AS - Setting Motion Detection - 2

text_image Motion Detection Video Tampering Scene Changing Enable Working Period Setup Anti-Dither 5 Second (0~100) Area Setup ✓ Record Record Delay 10 Second (10~300) ✓ Relay-out Alarm Delay 10 Second (10~300) □ Send Email □ Snapshot Default Refresh Save

Step 2 Select the Enable check box to enable motion detection function.
Step 3 Set the area for motion detection.
1) Click Setup next to Area.

Figure 5-23 Area
Dahua Technology IPC-HDBW3841E-AS - Setting Motion Detection - 3

text_image Area Region Name Region1 Sensitivity 60 Threshold 5 IPC Remove All Delete (Or Rightclick) Save Cancel

2) Select a color and set the region name. Select an effective area for Motion Detection in the image and set Sensitivity and Threshold.

- Select a color on to set different detection parameters

for each region.

- Sensitivity: Sensitive degree of outside changes. It is easier to trigger the alarm with higher sensitivity.

- Threshold: Effective area threshold for Motion Detection. The smaller the threshold is, the easier the alarm is triggered.

- The whole video image is the effective area for Motion Detection by default.

- The red line in the waveform indicates that the Motion Detection is triggered, and the green one indicates that there is no motion detection. Adjust sensitivity and threshold according to the waveform.

3) Click Save.

Step 4 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage". Anti-dither: After the Anti-dither time is set, the system only records one motion detection event in the period.

Step 5 Click Save.

5.4.2 Setting Video Tampering

The system performs alarm linkage when the lens is covered or video output is mono-color screen caused by light and other reasons.

Step 1 Select Setting > Event > Video Detection > Video Tamper.

Step 2 Select the event type.

- Video Tampering: When the percentage of the tampered image and the duration exceed the configured values, an alarm will be triggered.

- Defocus Detection: When the image is blurred, an alarm will be triggered. This function is available on some select models.

Figure 5-24 Video tampering
Dahua Technology IPC-HDBW3841E-AS - Setting Video Tampering - 1

text_image Motion Detection Video Tampering Scene Changing Event Type Video Tamper Enable Tamper Area 100 % (1~100) Duration 1 s (1~300) Anti-Dither 0 s (0~100) Period Setting Record Record Delay 10 s (10~300) Relay-out Alarm Delay 10 s (10~300) Send Email Snapshot Default Refresh Save

Table 5-4 Description of video temper parameter

ParameterDescription
Tamper Area When the percentage of the tampered image and the duration exceed the configured values, an alarm will be triggered.
Duration The tamper area is 30% and the duration is 5 s by default.
Anti-DitherOnly record one alarm event during the anti-dither period.

Step 3 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage".
Step 4 Click Save.

5.4.3 Setting Scene Changing

The system performs alarm linkage when the image switches from the current scene to another one.

Step 1 Select Setting > Event > Video Detection > Scene Changing.

Figure 5-25 Scene changing
Dahua Technology IPC-HDBW3841E-AS - Setting Scene Changing - 1

text_image Motion Detection Video Tampering Scene Changing Enable Working Period Setup Record Record Delay 10 Second (10~300) Relay-out Alarm Delay 10 Second (10~300) Send Email Snapshot Default Refresh Save

Step 2 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage".
Step 3 Click Save.

5.5 Setting Smart Motion Detection

The system performs alarm linkage when human, non-motorized vehicle, or motor vehicle appear on the image and its moving speed reaches the preset sensitivity. Enabling smart motion detection can avoid the alarms triggered by the environment changes, and the function is enabled by default.

Prerequisites

  • Select Setting > Event > Video Detection > Motion Detection to enable the motion detection function.
  • You have set Period and Area in Motion Detection, and make sure that the sensitivity value is larger than 0, and the threshold value is smaller than 100.

Procedure

Step 1 Select Setting > Event > Smart Motion Detection.

Figure 5-26 Smart motion detection
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Smart Motion Detection Enable Effective object Human Motor Vehicle Sensitivity Middle Default Refresh Save

Step 2 Select the Enable check box to enable the smart motion detection function.

Step 3 Set effective object and sensitivity.

  • Effective object: Includes Human and Motor vehicle. When you select Human, the camera will detect human and non-motorized vehicle.
  • Sensitivity: Includes Low, Middle, and High. The higher the sensitivity is, the easier the alarm will be triggered.

Step 4 Click OK.

5.6 Setting Audio Detection

The system performs alarm linkage when vague voice, tone change, or sound intensity rapid change is detected.

Step 1 Select Setting > Event > Audio Detection.

Figure 5-27 Audio detection
Dahua Technology IPC-HDBW3841E-AS - Setting Audio Detection - 1

text_image Audio Detection Enable Input Abnormal Enable Intensity Change Sensitivity - + 50 Threshold - + 50 Working Period Setup Anti-Dither 5 Second (0~100) Record Record Delay 10 Second (10~300) Relay-out Alarm Delay 10 Second (10~300) Send Email Snapshot Default Refresh Save

Step 2 Set parameters.

  • Input abnormal: Select the Enable Input Abnormal check box, and the alarm is triggered when the system detects abnormal sound input.
  • Intensity change: Select the Enable Intensity Change check box and then set Sensitivity and Threshold. The alarm is triggered when the system detects that the sound intensity exceeds the set threshold.
    It is easier to trigger the alarm with higher sensitivity or smaller threshold. Set a high

threshold for noisy environment.

The red line in the waveform indicates audio detection is triggered, and the green one indicates no audio detection. Adjust sensitivity and threshold according to the waveform.

Step 3 Set arming periods and alarm linkage action.

Step 4 Click Save.

5.7 Setting Smart Plan

Smart plan includes face detection, heat map, IVS, people counting, face detection, video metadata, stereo analysis and schedule. The intelligent function can be enabled only after the corresponding smart plan is enabled.

5.7.1 Basic Smart Plan

Step 1 Select Setting > Event > Smart Plan.

The Smart Plan interface is displayed. For smart plan icon, see the table below.

Table 5-5 Description of smart plan icon

IconDescriptionIconDescriptionIconDescription
Dahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 1Face detectionDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 2Stereo vision HeatDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 3
Dahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 4Stereo analysisDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 5IVSDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 6Face recognition
Dahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 7People countingDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 8Video metadataDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 9Crowd map
Dahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 10ANPRDahua Technology IPC-HDBW3841E-AS - Basic Smart Plan - 11Vehicle density— —

Step 2 Enable smart functions as need.

Different cameras support different ways to enable smart functions. Select corresponding ways to enable these functions according to the actual interface.

- Select an icon to enable the corresponding smart plan.

Click an icon to enable it, and the selected smart function is highlighted. Click it again to cancel the selection.

If the icon OFF on the interface, click it to enable the smart function switch.

- Enable smart plan through Add Plan.

  1. Select a preset point from the Add Plan the interface.

The smart plan for the point is displayed.

  1. Click the corresponding icon to enable a smart function.

The selected smart function is highlighted. Click it again to cancel the selection.

Step 3 Click Save.

5.7.2 Schedule

After enabling this function, you can configure different smart plans at different periods for your camera.

Step 1 Select Setting > Event > Smart Plan.

Step 2 Enable Schedule.

Figure 5-28 Schedule
Dahua Technology IPC-HDBW3841E-AS - Schedule - 1

text_image Smart Plan ✓ Schedule Plan Add Plan No. Color Name Channel 1 Modify Delete Time Settings Sun Mon Tue Wed Thu Fri Sat No Plans Setting Setting Setting Setting Setting Setting Setting Setting Refresh Save

Step 3 Click Add Plan.

  1. Rename the plan as needed.

  2. Select smart plan. Other plans which are incompatible with the one that you selected would turn gray.

  3. Click Save.

  4. Follow Step1 to Step3 to add more plans. You can add 10 plans at most.

- Click to modify the plan added.

- Click to delete the plan.

Figure 5-29 Add plan (1)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Click Add Plan. - 1

text_image Plan Plan Plan1 Channel 1 Face Detection Heat Map IVS People Counting Save Cancel

Figure 5-30 Add plan (2)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Click Add Plan. - 2

text_image Plan Add Plan No. Color Name Channel 1 Modify Delete 1 Plan1 Face Detection 2 Plan2 Heat Map 3 Plan3 IVS 4 Plan4 People Counting

Step 4 Configure the time settings.

  1. Click Settings.
  2. Configure the period. In the Smart Plan list, select the type as needed.
  3. Click Save.
  4. (Optional) Repeat step 1-4 to add more plans for different time.

  5. You can set up to 6 different plans for one day.

  6. One period can only add one smart plan.

Figure 5-31 Time settings (1)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Click Add Plan. - 3

text_image Setting All ✓ Sun Mon Tue Wed Thu Fri Sat Period1 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Period2 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Period3 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Period4 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Period5 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Period6 00 : 00 : 00 - 00 : 00 : 00 Smart Plan NONE ✓ Save Cancel

Figure 5-32 Time settings (2)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Click Add Plan. - 4

bar | Day | No Plans | |-------|----------| | Sun | 5 | | Mon | 8 | | Tue | 12 | | Wed | 5 | | Thu | 15 | | Fri | 18 | | Sat | 24 |

Step 5 Click Save.

Dahua Technology IPC-HDBW3841E-AS - Step 3 Click Add Plan. - 5

Schedule function is only available on single-channel cameras.

5.8 Setting IVS

This section introduces scene selection requirements, rule configuration, and global configuration for IVS (intelligent video surveillance).

Basic requirements on scene selection are as follows.

  • The target should occupy no more than 10% of the whole image.
  • The target size in the image should be no more than 10 × 10 pixels. The size of abandoned object in the image should be no less than 15 × 15 pixels (CIF image). The target height and width should no more less than a third of the image height and width. The recommended target height is 10% of the image height.
  • The brightness difference of the target and the background should be no less than 10 gray levels.
  • The target should be continuously present in the image for no less than two seconds, and the moving distance of the target should be larger than its width and no less than 15 pixels (CIF image) at the same time.
  • Reduce the complexity of surveillance scene as much as you can. Intelligent analysis functions are not recommended to be used in scene with dense targets and frequent illumination change.
  • Avoid areas such as glass, reflective ground, water surface, and areas interfered by branch, shadow and mosquito. Avoid backlight scene and direct light.

5.8.1 Global Configuration

Set global rules for IVS, including anti-disturb, depth of field calibration, and valid motion parameter for targets.

Calibration Purpose

Determine corresponding relationship between 2D image captured by the camera and 3D actual object according to one horizontal ruler and three vertical rulers calibrated by the user and the corresponding actual distance.

Applicable Scene

  • Medium or distant view with installation height of more than three meters. Scenes with parallel view or ceiling-mounted are not supported.
  • Calibrate horizontal plane, not vertical walls or sloping surfaces.
  • This function is not applicable to scenes with distorted view, such as the distorted views captured by super wide-angle or fisheye camera.

Notes

- Calibration Drawing

◇ Calibration area: The calibration area drawn should be on one horizontal plane.
- Vertical ruler: The bottom of three vertical rulers should be on the same horizontal plane. Select three reference objects with fixed height in triangular distribution as vertical rulers, such as vehicle parked at roadside or road lamp poles. Arrange three persons to draw at each of the three positions in the monitoring scene.
Horizontal ruler: Select reference object with known length on the ground, such as sign on the road, or use a tape to measure the actual length.

- Calibration Verification

After setting the ruler, draw a straight line on the image, check the estimated value of the straight line, and then compare this value with the value measured in the actual scene to verify calibration accuracy. In case of major difference between the estimated value and the actual one, fine-tune or reset parameters until the error requirement is met.

Procedure

  1. Select Setting > Event > IVS > Global Setup.

Figure 5-33 Global setup of IVS
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Rule Config | Global Setup Parameter Anti-Disturb Enable On Off Sensitivity 5 Calibrate Region Area Horizontal Vertical Vertical Vertical Add Calibration... Remove Calibrat... Ruler Vertical Horizontal Actual Length 1 m Add Rulers Remove Rulers Weight Vertical Calibration Valid... Advanced Parameter Default Refresh Save
  1. Set parameters.

Table 5-6 Description of global setup (IVS) parameters

ParameterDescription
Anti-Disturb EnableA reserved function.
SensitivityAdjust the filter sensitivity. With higher value, it is easier to trigger an alarm when low-contrast object and small object are captured, and the false detection rate is higher.
Tracking Overlap RateReserved functions.
Valid Tracking Distance
Valid Tracking Time
  1. Set calibration area and ruler.

a. Click Add Calibration Area and draw a calibration area in the image.

b. Select a calibration type and enter the actual length, and then click Add Rulers.

c. Draw one horizontal ruler and three vertical rulers in the calibration area.

  1. Click Save.

Result

  1. Select the verification type, and then click Calibration Valid.

To verify vertical ruler and horizontal ruler, respectively selectHeight Verification and Width Verification.

  1. Draw a straight line in the image to verify whether the rulers are correctly set.

In case of big difference between the estimated value and the actual one, fine-tune or reset parameters until the error requirement is met.

5.8.2 Rule Configuration

Set rules for IVS, including cross fence detection, tripwire, intrusion, abandoned object, moving object, fast moving, parking detection, crowd gathering, and loitering detection.

  • Select Setting > Event > Smart Plan, and enable IVS.
  • Select Setting > Event > IVS > Global Setup to finish global configuration, and then configure Fast Moving rule.

Table 5-7 Description of IVS functions

RuleDescriptionApplicable Scene
TripwireWhen the target crosses tripwire from the defined motion direction, the system performs alarm linkages.Scenes with sparse targets and no occlusion among targets, such as the perimeter protection of unattended area.
IntrusionWhen the target enters, leaves, or appears in the detection area, the system performs alarm linkages.
Abandoned objectWhen an object is abandoned in the detection area over the set time, the system performs alarm linkages.Scenes with sparse targets and without obvious and frequent light change. Simple scene in the detection area is recommended.Missed alarms might increase in the scenes with dense targets, frequent occlusion, and people staying.In scenes with complex foreground and background, false alarm might be triggered for abandoned or missing object.
Missing objectWhen an object is taken out of the detection area over the defined time, the system performs alarm linkages.Scenes with sparse targets and without obvious and frequent light change. Simple scene in the detection area is recommended.Missed alarm might increase in the scenes with dense targets, frequent occlusion, and people staying.In scenes with complex foreground and background, false alarm might be triggered for abandoned or missing object.
Fast movingWhen the motion speed is higher than the configured speed, the system performs alarm linkages.Scene with sparse targets and less occlusion. The camera should be installed right above the monitoring area. The light direction should be vertical to the motion direction.
Parking detectionWhen the target stays over the configured time, the system performs alarm linkages.Road monitoring and traffic management.
Crowd gatheringWhen the crowd gathers or the crowd density is large, the system performs alarm linkages.Scenes with medium or long distance, such as outdoor plaza, government entrance, station entrance and exit. It is not suitable for short-distance view analysis.
Loitering detectionWhen the target loiters over the shortest alarm time, the system performs alarm linkages. After alarm is triggered, if the target stays in the area within the time interval of alarm, then alarm will be triggered again.Scenes such as park and hall.

Configure IVS rules. This section takes tripwire as an example.

Dahua Technology IPC-HDBW3841E-AS - Rule Configuration - 1

Go to the Rule Config interface of the speed dome, and the PTZ lock function is automatically enabled. The locking time is 180 seconds. You can only manually control the PTZ during the locking time. Click Unlock at lower left corner of the Rule Config interface to manually unlock the PTZ, and click Lock again to relock the PTZ.

Step 1 Select Setting > Event > IVS > Rule Config.

Step 2 Click + on the Rule Config interface, double-click the name to modify the rule name, and then select Tripwire from the Rule Type drop-down list.

Figure 5-34 Tripwire
Dahua Technology IPC-HDBW3841E-AS - Rule Configuration - 2

text_image Rule Config Global Setup No. Name Rule Type 1 Rule1 Tripwire Parameter Setup Period Setting Direction A<->B Object filter Record Record Delay 10 s (10~300) Relay-out Alarm Delay 10 s (10~300) Send Email PT2 Snapshot Draw Rule Clear Target Filter Max Size 8191 8191 Min Size 0 0 Pixel Counter 0 0 Draw Target Clear Draw Target Clear Draw Target Default Refresh Save

Step 3 Click Draw Rule to draw rule line in the image. Right-click to finish drawing. For requirements of drawing rules, see Table 5-7. After drawing rules, drag corners of the detection area to adjust the area range.

Table 5-8 Description of IVS analysis

RuleDescription
Tripwire Draw a detection line.
IntrusionDraw a detection area.During the detection of abandoned object, the alarm is also triggered if pedestrian or vehicle stays for a long time. If the abandoned object is smaller than pedestrian and vehicle, set the target size to filter pedestrian and vehicle or properly extend the duration to avoid false alarm triggered by transient staying of pedestrian.During the detection of crowd gathering, false alarm might be triggered by low installation height, large percentage of single person in an image or obvious target occlusion, continuous shaking of the camera, shaking of leaves and tree shade, frequent opening or closing of retractable door, or dense traffic or people flow.
Abandoned object
Missing object
Fast moving
Parking detection
Crowd gathering
Loitering detection

Step 4 (Optional) Click Draw Target at the right side of Target Filter, and then draw the target in the image.

  • When the rule of crowd gathering is configured, you do not need to set target filter, but draw the minimum gathering area. Click Draw Target to draw the minimum gathering area in the scene. The alarm is triggered when the number of people in the detection area exceeds the minimum area and the duration.
  • Click Clear to delete all drawn detection lines.
  • Click Draw Target at the right side of Pixel Counter, and then press and hold the left mouse button to draw a rectangle, the Pixel Counter then displays its pixel.

Step 5 Set rule parameters for IVS.

Table 5-9 Description of IVS parameters

ParameterDescription
DirectionSet the direction of rule detection.When setting cross fence detection and tripwire, select A->B,B->A, or A<->B.When setting intrusion, select Enters, Exits, or Enter&Exit.
Action When setting intrusion action, select Appears or Cross.
Object trackingSelect Object Tracking to enable this function. When alarm is triggered by a moving object, select 1P+3 or 1P+5 as the object tracking display mode in the Live interface. Then the tracking scene follows the moving object until the object is out of the camera range. For details, see "4.2.4 Window Adjustment Bar".This function is available on some select models.
Track linkageSelect AlarmTrack and set the tracking time. When alarm is
Track Timetriggered, the camera automatically tracks the person or object that triggers the alarm. Tracking time is the duration that the camera automatically tracks the object.Before enabling this function, you need to enable or disable the Alarm Track function under Smart Track as needed.When the Channel is set as 1, disable Alarm Track under Smart Track.When the Channel is set as 2 or 3, enable Alarm Track under Smart Track.
AI RecognitionSelect AI Recognition to enable this function.When you select Person as the alarm target, an alarm will be triggered when the system detects that persons trigger the rule.When you select Vehicle as the alarm target, alarm will be triggered when the system detects that vehicle trigger the rule.
DurationFor abandoned object, the duration is the shortest time for triggering an alarm after an object is abandoned.For missing object, the duration is the shortest time for triggering an alarm after an object is missing.For parking detection, crowd gathering, or loitering detection, the duration is the shortest time for triggering an alarm after an object appears in the area.
SensitivityFor fast moving, sensitivity is related to the triggering speed. Lower sensitivity requires faster moving speed to trigger the alarm.For crowd gathering, sensitivity is related to the alarm triggering time. It is easier to trigger the alarm with higher sensitivity.

Step 6 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage".
Step 7 Click Save.
To view alarm information on the Alarm tab, you need to subscribe relevant alarm event.
For details, see "5.1.2 Subscribing Alarm".

5.9 Setting Crowd Map

You can view crowd distribution on the map in real time for timely arming, to prevent stampede and other accidents.

5.9.1 Global Configuration

Set the calibration parameters of panoramic cameras.

Calibration Purpose

Determine corresponding relationship between 2D image captured by the camera and 3D actual

object according to one horizontal ruler and three vertical rulers calibrated by the user and the corresponding actual distance.

Notes

When drawing calibration ruler, keep the ruler length consistent with the actual length of the object.

Procedure

  1. Select Setting > Event > Crowd Map > Global Setup

Figure 5-35 Global setup of crowd map
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Crowd Map Global Setup Parameter Installation Height 6.2 m Ruler Settings ■ Ruler List Ruler ● Vertical ○ Horizontal Actual Length 1 m Add Rulers Remove Rulers Default Refresh Save
  1. Set calibration area and ruler.

a. Click Add Calibration Area and draw a calibration area in the image.
b. Select a calibration type and enter the actual length, and then click Add Rulers.
c. Draw one horizontal ruler and three vertical rulers in the calibration area.

  1. Click Save.

5.9.2 Rule Configuration

When the number of people or the crowd density in the detection area exceeds the configured threshold, the system performs alarm linkages.

Prerequisites

  • Select Setting > Event > Smart Plan, and enable Crowd Map.
  • Select Setting > Event > Crowd Map > Global Setup to configure the crowd map.

Procedure

Step 1 Select Setting > Event > Crowd Map > Crowd Map.

Figure 5-36 Crowd map
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Crowd Map Global Setup 14847Kbps 5120x1800 Enable Period Setting No. Region Trigger alarm number of people Delete + 1 Region1 20 - Draw Detect... Clear Draw Area Clear Pixel Counter 0 0 Draw Target Global Crowd Density 4 Human /m² (2~10) Smart Track Record 1 2 Record Delay 10 s (10~300) Relay-out 1 2 3 Alarm Delay 10 s (10~300) Send Email Snapshot 1 2 Default Refresh Save

Step 2 Select the Enable check box, and then the crowd map function is enabled.

Step 3 Click Draw Detection Area to draw global area for detecting crowd distribution in the image.

After drawing a global area, you can draw multiple local statistical areas in the global area as needed.

1) Click, and then click Draw Area to draw local statistical area in global detection area.

You can draw up to eight local statistical areas.

2) Double-click the area name and the alarm people amount to set the area name of local statistical area and the threshold of the alarm people amount.

When the number of people in the statistical area exceeds the alarm people amount, the system performs alarm linkages. The default alarm people amount is 20.

Step 4 Set parameters.

Table 5-10 Description of crowd map parameters

ParameterDescription
Global Select theGlobal check box and set the crowd density threshold. The system detects crowd distribution in the global area. When the crowd density exceeds the configured threshold, the system performs alarm linkages.
Crowd Density
Smart trackSelect the Smart Track check box, and when alarm is triggered by the panoramic camera, the speed dome automatically turns to the position where alarm is triggered. The tracking time is "idle time + five seconds." For the details of idle time configuration, see "5.2.2 Enabling Alarm Track"Linkage rules:Detect global alarm only: Turns to crowd with highest density.Detect local alarm only: Turns to local area that triggers alarm first.Detect global alarm + one local alarm: First turns to local area, and then the crowd with highest density when there is no alarm in local area.Detect global alarm + multiple local alarms: First turns to local area that triggers alarm first, and then the crowd with highest density when there is no alarm in local area.[W357]Before enabling this function, you need to configure Smart Track.For details, see "5.2 Setting Smart Track".
Pixel CounterClick Draw Target next to Pixel Counter, and then press and hold the left mouse button to draw a rectangle, the Pixel Counter then displays its pixel.

Step 5 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage"
Step 6 Click Save.

Result

Click

Dahua Technology IPC-HDBW3841E-AS - Result - 1

on the Live interface to view the crowd map.

Figure 5-37 Crowd map (1)
Dahua Technology IPC-HDBW3841E-AS - Result - 2

natural_image Panoramic view of a large-scale classroom or exam hall with students at desks and a teacher at the front (no visible text or symbols)

Double-click the rendering area at the lower-right corner in the image to view crowd distribution in the area.

Figure 5-38 Crowd map (2)
Dahua Technology IPC-HDBW3841E-AS - Result - 3

natural_image Panoramic view of a large-scale food processing or processing facility with multiple workstations and workers in blue helmets (no visible text or symbols)

5.10 Setting Face Recognition

When a face is detected or recognized in the detection area, the system performs alarm linkage and supports searching face detection and recognition results.

  • Face Detection: When a face is detected in the area, the system performs alarm linkage, such as recording and sending emails.
  • Face Recognition: When a face is detected in the area, the system compares the captured face image with the information in the face database, and links alarm according to the comparison result.

For the process of setting face recognition, see Figure 5-39.

Figure 5-39 Face recognition flowchart
Dahua Technology IPC-HDBW3841E-AS - Setting Face Recognition - 1

flowchart
graph TD
    A["Start"] --> B["Enable face recognition"]
    B --> C["Configure face detection"]
    C --> D["Configure face database"]
    D --> E["Create face database"]
    E --> F["Add face picture"]
    F --> G["Maintain face information"]
    G --> H["Face Modeling"]
    H --> I["View the result on the Live interface"]
    I --> J["View results on the Search interface"]
    J --> K["End"]

    style A fill:#4a76c4,stroke:#333
    style K fill:#4a76c4,stroke:#333

    subgraph "Main task"
        L
        M
    end

    subgraph "Sub Task"
        N
        O
    end

5.10.1 Setting Face Detection

When a face is recognized in the detection area, the system performs alarm linkage.

Prerequisites

Select Setting > Event > Smart Plan, and then enable Face Recognition.

Procedure

Step 1 Select Setting > Face Recognition > Face Detection.

Figure 5-40 Face detection
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Face Detection Face Database Config Alarm Search Enable OSD Clear Period Setting Face Enhancement Record Record Delay 10 s (10~300) Send Email Snapshot Non-living Filtering Snap Face Image One-inch photo Snap Mode Optimized Snap Attribute Advanced Enable Face Exposure Face Target Brightn... 50 (0-100) Face Exposure Dot... 5 (0-100) s Default Retrash Save Detected Region Draw Clear Exclude Re Draw Modify Clear Target filter Max Size 8191 8191 Min Size 0 0 Pixel Counter 0 0 Draw Target Clear Draw Target Clear Draw Target

Step 2 Select the Enable check box to enable the face detection function.

Step 3 (Optional) Click Draw next to Detect Region to draw a face detection area in the image.

Step 4 (Optional) Click Draw next to Exclude Region to draw a non-face detection area in the Detect Region.

Step 5 (Optional) Select Max Size or Min Size, click Draw Target at the right side of Target filter, and then draw the target in the image.

Step 6 Set parameters.

Table 5-11 Description of face detection parameters

ParameterDescription
OSDSelect the OSD check box, and the number of people with face detected and recognized is displayed on theLiveinterface.Click Resetto recount.
Face EnhancementSelect the Face Enhancementcheck box to preferably guarantee clear face with low stream.
Non-living FilteringFilter non-living faces in the image, such as a face picture.
Snap Face ImageSet a range for snapping face image, including face picture, one-inch picture, and custom.When selectingCustom, click Setting, configure the parameters on the prompt interface, and then click OK.Customized width: Set snapshot width; enter the times of the original face width. It ranges from 1–5.Customized face height: Set face height in snapshot; enter the times of the original face height. It ranges from 1–2.Customized body height: Set body height: in snapshot; enter the times of the original body height. It ranges from 0–4.When the value is 0, it means to cutout the face image only.
Snap ModeOptimized Snapshot: Capture the clearest picture within the configured time after the camera detects face.Recognition Priority: Repeatedly compare the captured face to the faces in the armed face database, and capture the most similar face image and send the alarm. It is recommended to use this mode in access control scene.Click Advanced to set the optimized time.
AttributeSelect the Attribute check box, and click to set the display of face attribute during the face detection.
AdvancedSnapshot Angle Filter: Set snapshot angle to be filtered during the face detection.Snapshot Sensitivity: Set snapshot sensitivity during the face detection. It is easier to detect face with higher sensitivity.Optimized Time: Set a time period to capture the clearest picture after the camera detects face.
Enable Face ExposureSelect the Enable Face Exposure check box. When a face is detected, the camera can enhance brightness of the face to make the face image clear.
Face Target BrightnessSet the face target brightness. It is 50 by default.
Face Exposure Detection IntervalSet the face exposure detection interval to prevent image flickering caused by constant adjustment of face exposure. It is five seconds by default.
Pixel CounterClick Draw Target next to Pixel Counter, and then press and hold the left mouse button to draw a rectangle, the Pixel Counter then displays its pixel.

Step 7 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".
Step 8 Click Save.

5.10.2 Setting Face Database

By setting face database, the face database information can be used to compare with the face detected.

Face database configuration includes creating face database, adding face picture, and face modeling.

5.10.2.1 Creating Face Database

Face database includes face picture, face data and other information. It also provides comparison data for the captured face pictures.

Step 1 Select Setting > Event > Face Recognition > Face Database Config.

Capacity Limit: Shows the usage of the memory.

Figure 5-41 Face database configuration
Dahua Technology IPC-HDBW3841E-AS - Creating Face Database - 1

text_image Human Recognition Face Database Config Alarm Search Add Face Data Capacity Limit 92% No Face Database Register No Deploy Similarity Threshold Moreinfo Arm/Disarm Delete 1 11 10228 10 Refresh Save

Step 2 Click Add Face Database.

Figure 5-42 Add face database
Dahua Technology IPC-HDBW3841E-AS - Creating Face Database - 2

text_image Add Face Database Name OK Cancel

Step 3 Set the name of the face database.
Step 4 Click OK.

Figure 5-43 Face database successfully added
Dahua Technology IPC-HDBW3841E-AS - Creating Face Database - 3

text_image Face Detection Face Database Config Alarm Search Add Face Data Capacity Limit: 93% No Face Database Register No Deploy Similarity Threshold MoreInfo Arm/Disarm Delete 1 1 8037 ✓ 82 # 2 test11 4144 ✓ 82 # 3 test2 4143 □ 82 # 4 test_new 4568 □ 82 # 5 Test_1 0 □ 82 # Refresh Save

Step 5 Set parameters.

Table 5-12 Description of face database parameters

ParameterDescription
DeploySelect the Deploy check box, and the face database deployment is enabled. The captured face picture is compared to the armed face database.
Similarity ThresholdThe detected face matches the face database only when the similarity between the detected face and the face feature in face database reaches the configured similarity threshold. After successful match, the comparison result is displayed on the Live interface.
MoreInfoClick MoreInfo to manage face database. You can search face images by setting search conditions, register personnel, and modify personnel information.
Arm/DisarmSet the alarm time period. Alarm event will be triggered only within the defined time. See "5.1.1.1 Setting Period".
DeleteDelete the selected face database.

5.10.2.2 Adding Face Picture

Add face picture to the created face database. Single adding and batch importing are supported. Requirements on face pictures.

  • A single face picture size is 50 K–150 K in JPEG format. The resolution is less than 1080p.
  • Face size is 30%–60% of the whole picture. Pixel should be no less than 100 pixels between the ears.
  • Taken in full-face view directly facing the camera without makeup, beautification, glasses, and fringe. Eyebrow, mouth and other face features must be visible.

5.10.2.2.1 Single Adding

Add face pictures one by one. Select this way when you need to add a small number of face pictures.

Step 1 Select Setting > Event > Face Recognition > Face Database Config.

Step 2 Click next to the face database to be set.

Figure 5-44 Face database configuration
Dahua Technology IPC-HDBW3841E-AS - Single Adding - 1

text_image Face Detection Face Database Config Alarm Search Back | Face Database: Test_1 Task List Name Gender Unlimited Date of Birth Modeling Status Unlimited Credentials T... Unlimited ID No. Region Unlimited Search Registration Catch Registration Modeling All Modeling

Step 3 Click Registration.

Figure 5-45 Registration (1)
Dahua Technology IPC-HDBW3841E-AS - Single Adding - 2

text_image Registration Upload Picture Name* Gender Male Date of Birth Region Unlimited City Custom Credentials... IC ID No. Address Memo Upload Picture Add to task list Cancel

Step 4 Click Upload Picture, select a face picture to be uploaded, and then click Open.

Dahua Technology IPC-HDBW3841E-AS - Single Adding - 3

You can manually select the area for a face. After uploading picture, box select a face and click OK. When there are multiple faces in a photo, select the target face and click OK to save face picture.

Figure 5-46 Registration (2)
Dahua Technology IPC-HDBW3841E-AS - Single Adding - 4

text_image Registration Upload Picture Name* Gender Male Date of Birth Region Unlimited City Custom Credentials... IC ID No. Address Memo OK | Cancel Add to task list Cancel

Step 5 Enter the information about face picture according to the actual situation.

Step 6 Click Add to task list.

Step 7 Click Task List1, and then click OK.

The Task List interface is displayed. See Figure 5-47. Click Remove All to remove all tasks by one click.

Figure 5-47 Task list (manually add)
Dahua Technology IPC-HDBW3841E-AS - Single Adding - 5

text_image Task List Add Status ...... Modify Status Delete Status OK Remove All

If adding user fails, the error code is displayed on the interface. For details, see Table 5-13. For face modeling operation, see "5.10.2.4 Face Modeling".

Table 5-13 Description of error code

ParameterErrorDescription
0x1134000CPicture importing errorThe picture is too large, and the upper limit is 150K.
0x1134000EThe quality of the added pictures is to the upper limit.
0x11340019The space of the face database exceeds the upper limit.
1Picture modeling errorThe picture format is not correct. Import the picture in JPG format.
2No face in the picture or the face is not clear. Change the picture.
3Multiple faces in the picture. Change the picture.
4Fails to decode the picture. Change the picture.
5The picture is not suitable to be imported to the face database. Change the picture.
6The database error. Restart the camera and model faces again.
7Fails to get the picture. Import the picture again.
8System error. Restart the camera and model faces again.

5.10.2.2.2 Batch Importing

Import face pictures in batches. Select this way when you need to add a large number of face pictures.

Before importing pictures in batches, name face pictures in a format of "Name#SGender#BDate of Birth#NRegion#TCredentials Type#MID No.jpg" (for example, "John#S1#B1990-01-01#T1#M0000).

Dahua Technology IPC-HDBW3841E-AS - Batch Importing - 1

  • The max. size of a single face picture is 150 K, and the resolution is less than 1080p.
  • When naming pictures, Name is required, and others are optional.

Table 5-14 Description of naming rules for batch import parameters

ParameterDescription
Name Enter a name.
GenderEnter a figure. "1" is male and "2" is female.
Date of BirthEnter a figure. Format: yyyy-mm-dd, such as 2017-11-23.
Credentials TypeEnter a figure. "1" is ID card and "2" passport.
ID number Enter ID No.

Step 1 Select Setting > Event > Face Recognition > Face Database Config.

Step 2 Click next to the face database that you want to set.

Step 3 Click Batch Registration.

Figure 5-48 Batch add
Dahua Technology IPC-HDBW3841E-AS - Batch Importing - 2

text_image Task List Supported Picture Format(.jpg) Naming Format: Name#SGender#BDate of Birth#NRegion#TCredentials Type#MID No. Example: John#S1#B1990-01-01#NCN#T1#M330501199001016222 Gender: 1.Male 2.Female Credentials Type: 1.IC 2.Passport 4.Other Browse... Cancel

Step 4

Click

Dahua Technology IPC-HDBW3841E-AS - Batch Importing - 3

to select file path.

Figure 5-49 Batch import
Dahua Technology IPC-HDBW3841E-AS - Batch Importing - 4

text_image Task List Path: D:\Human Face File Size: 370 Browse... Cancel

Step 5 Click Browse.

The interface shows import process. After finishing the import, the interface shown as Figure 5-50 is displayed.

Figure 5-50 Imported successfully
Dahua Technology IPC-HDBW3841E-AS - Batch Importing - 5

text_image Task List Picture import completed! ✓ Succeed:0 - Fail:1 Check Details

5.10.2.3 Managing Face Picture

Add face pictures to face database, and then manage and maintain face pictures to ensure correct information.

5.10.2.3.1 Modifying Face Information

Step 1 Go to the Face Database Config interface, set filtering condition as needed, and click Search.

The search result is displayed.

Step 2 Select the row where the face picture or the personnel information is located, and then

click or .

Figure 5-51 Face information modification
Dahua Technology IPC-HDBW3841E-AS - Modifying Face Information - 1

text_image Registration Upload Picture Name* 021819 Gender Date of Birth Region Unlimited City Custom Credentials... Other ID No. Address Memo Upload Picture Add to task list Cancel

Step 3 Modify face information according to the actual need. Click Add to task list.

Step 4 Click Task List1, and then click OK.

5.10.2.3.2 Deleting Face Picture

Go to the Face Database Config interface, and delete the created face picture.

  • Single delete: Select the row where the face picture or the personnel information is located, and click 📄 or — to delete the face picture.
  • Batch delete: Select □ at the upper right corner of the face picture or □ of the row where the personnel information is located. Select the information, clickAdd to Deletion List, ,Task List1 and then click OK to delete the selected face picture.
  • Delete all: When viewing face pictures in a list, click ☐ of the row where the serial number is located; when viewing by thumbnail, select All to select all face pictures. Click Add to Deletion List, Task List1, and then click OK to delete all face pictures.

5.10.2.4 Face Modeling

Face modeling extracts face picture information and imports the information to a database to establish relevant face feature models. Through this function, the face recognition and other intelligent detections can be realized.

Dahua Technology IPC-HDBW3841E-AS - Face Modeling - 1

  • The more the selected face pictures are, the longer time the face modeling takes. Please wait patiently.
  • During modeling, some intelligent detection functions (such as face recognition) are not available temporarily, and will be available after modeling.

Step 1 Select Setting > Event > Face Recognition > Face Database Config.

The Face Database Config interface is displayed.

Step 2 Click next to the face database to be set.

Figure 5-52 Face database configuration
Dahua Technology IPC-HDBW3841E-AS - Face Modeling - 2

text_image Face Detection Face Database Config Alarm Search Back | Face Database: Test_1 Task List Name Gender Unlimited Date of Birth Modeling Status Unlimited Credentials T... Unlimited ID No. Region Unlimited Search Registration Batch Registration Modeling All Modeling

Step 3 Start modeling.

- Selective modeling. If there are many face pictures in the face database, you can set search criteria to select the pictures that need to be modeled.

  1. Set the search criteria, and click Search.
  2. Select the face pictures to be modeled.
  3. Click Modeling.

- All modeling. Click Modeling All to complete modeling of all face pictures in the face database.

Step 4 View the modeling result.

- Successful modeling.

Figure 5-53 Successful modeling
Dahua Technology IPC-HDBW3841E-AS - Step 3 Start modeling. - 1

text_image Task List Modeling completed. ✓ Succeed:8 Previous
  • Failed modeling.

Figure 5-54 Failed modeling
Dahua Technology IPC-HDBW3841E-AS - Step 3 Start modeling. - 2

text_image Task List Modeling completed. ✓ Succeed:0 - Fail:1 Search Previous

Click Search, and the face details are displayed. Click to view the face picture in list format. See Figure 5-55. Click to view the face picture in thumbnail format. See Figure 5-56.

When the modeling status is Valid in the list or is displayed on the left corner of the thumbnail, it means the modeling succeeded.
When the modeling status is Invalid in the list or is not displayed on the left corner of the thumbnail, it means the modeling failed. Point to the modeling status in the list or the pictures without to view the details of the failure. Change the pictures according to the details.

Figure 5-55 Modeling status (list)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Start modeling. - 3

text_image Human Recognition Face Database Config Name Search Face Database Test Name Gender Untested Data of Rich Location Properties Marketing Status Untested Controllable To: Untested ID No Region Unmitted Province Unmitted Unmitted Search Registration Data Registration Modeling All Modeling Add to the default test No. Name Group Date of Birth Magnit City Continent Type ID No Modeling Status Status Outputs 1 601 Male 2 A43 Male 3 502 Male 4 554 Female 5 505 Female C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: C: N Study Items Flash page display DDB Item

Figure 5-56 Modeling status (thumbnail)
Dahua Technology IPC-HDBW3841E-AS - Step 3 Start modeling. - 4

text_image Human Recognition Face Database Config Alert Search Face Connection Text Name Gender Unlimited Duty of Birth my-mim-ad my-mim-ad Modelling Status Unlimited GROWTH T: Unlimited R: No Height Unlimited P: 0.5% Unlimited Unlimited Search Registration Both Registration Modeling All Modeling Add to the default List Modeling Status:No face detected. SCT S30 S93 S49 S00 S71

5.10.3 Setting Face Recognition Alarm Linkage

When face recognition succeeded or failed, the device links alarm out.

Step 1 Select Setting > Event > Face Recognition > Alarm.

Figure 5-57 Alarm (face recognition)
Dahua Technology IPC-HDBW3841E-AS - Setting Face Recognition Alarm Linkage - 1

text_image Face Detection Face Database Config Alarm Search Face Database Please add face databa Relay-out Alarm Channel1 Alarm Rule Face Recognition Succeeded Face Recognition Failed Alarm Delay 1 s (1~300) Refresh Save

Step 2 Select a face database and an alarm rule.

  • Face recognition succeeded: When the detected face matches that in the face database, the device links alarm out.
  • Face recognition failed: When the detected face fails to match that in the face database, the device links alarm out.

Step 3 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 4 Click Save.

5.10.4 Viewing Face Recognition Result

View face recognition result on the Live interface or by the search function.

5.10.4.1 Viewing Result in the Live Interface

View face recognition result on the Live interface. See Figure 5-58.

  • Face recognition result is displayed at the left side and the captured face pictures and attribute information at the right side.
  • Click a face picture in the display area, and the information is displayed.

Figure 5-58 Face recognition result
Dahua Technology IPC-HDBW3841E-AS - Viewing Result in the Live Interface - 1

text_image Face Detection 2002 Face Recognition 518 2019-07-12 15:39:13

5.10.4.2 Viewing Result by Search Function

View face recognition or face snapshot result. Take face recognition search as an example.

Prerequisites

You have installed a SD card in the camera.

Procedure

Step 1 Select Setting > Event > Face Recognition > Search.

Figure 5-59 Face recognition search
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Face Detection Face Database Config Alarm Search Type Face Snapsh Start Time 2019-07-03 14 : 20 : 55 End Time 2019-07-04 14 : 20 : 55 Advanced Par... Search Age Unlimited Gender Unlimited Expression Unlimited Glasses Unlimited Mouth Mask Unlimited Beard Unlimited

Step 2 Select Face Recognition for Type, enter the start time and the end time, and then click Search.

  • Click Advanced Parameters to set more search conditions.
  • Click a search result to view details.

Figure 5-60 Search results (face recognition)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Face Detection Face Database Config Alarm Search Type Face Recogn Start Time 2019-07-11 15:57:33 End Time 2019-07-12 15:57:33 Advanced Par Search 2019-07-12 15:56:54 Totally 1 item Each page displays 20 Item

Figure 5-61 MoreInfo (face recognition)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 3

text_image MoreInfo Alarm Info Face Database: Similarity: 99% Time: 2019-07-12 15:56:54 Attribute Age: Young Expression: Confused Mouth Mask: No Gender: Male Glasses: General Beard: No MoreInfo Name: Jhon Date of Birth: 1991-05-20 Region: Brazil Credentials Type: Passport Address: Unknown Memo: Unknown Gender: Male City: Brasilia ID No.:

5.11 Setting Face Detection

When a face is detected in the detection area, the system performs an alarm linkage.

Prerequisites

Select Setting > Event > Smart Plan, and then enable Face Detection.

Procedure

Step 1 Select Setting > Event > Face Detection.

Figure 5-62 Face detection
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Face Detection Enable OSD Clear Period Setting Face Enhancement Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Non-living Filtering Snap Face Image One-inch photo Snap Mode Optimized Snap Attribute Advanced Enable Face Exposure Face Target Brightn... - + 50 (0~100) Face Exposure Det... - + 5 (0~100) S Default Refresh Save Deted Region Draw Clear Exclude Re... Draw Modify Clear Target filter Max Size 8191 * 6191 Min Size 0 * 0 Pixel Counter 0 * 0 Clear Draw Target Clear Draw Target Clear Draw Target

Step 2 Select the Enable check box to enable the face detection function.

Step 3 (Optional) Click Draw next to Detect Region to draw a face detection area in the image.

Step 4 (Optional) Click Draw next to Exclude Region, and then draw an area excluding face detection in the image.

Step 5 (Optional) Select Max Size or Min Size, click Draw Target at the right side of Target filter, and then draw the target in the image.

Step 6 Set parameters.

Table 5-15 Description of face detection parameters

ParameterDescription
OSDSelect the OSD check box, and the number people with face detected and recognized is displayed on the Live interface.Click Clear to recount.
Face EnhancementSelect the Face Enhancement check box to preferably guarantee clear face with low stream.
Target Box OverlaySelect the Non-living Filtering check box to add a target box to the face in the captured picture to highlight the face.The captured face picture is saved in SD card. Click the Snap Face Image tab to view the captured picture.
Non-living FilteringFilter non-living faces in the image, such as a face picture.
Snap Face ImageSet a range for snapping face image, including face picture, one-inch picture, and custom.When selecting Custom, click Setting, configure the parameters on the prompt interface, and then click OK.Customized width: Set snapshot width; enter the times of the original face width. It ranges from 1–5.Customized face height: Set face height in snapshot; enter the times of the original face height. It ranges from 1–2.Customized body height: Set body height: in snapshot; enter the times of the original body height. It ranges from 0–4.When the value is 0, it means to cutout the face image only.
Snap ModeOptimized Snapshot Capture the clearest picture within the configured time after the camera detects face.Recognition Priority: Repeatedly compare the captured face to the faces in the armed face database, and capture the most similar face image and send the event. It is recommended to use this mode in access control scene.Click Advanced to set the optimized time.
AttributeSelect the Attribute check box, and click to set the display of face attribute during the face detection.
AdvancedSnapshot Angle Filter: Set snapshot angle to be filtered during the face detection.Snapshot Sensitivity: Set snapshot sensitivity during the face detection. It is easier to detect face with higher sensitivity.Optimized Time: Set a time period to capture the clearest picture after the camera detects face.
Enable Face ExposureSelect the Enable Face Exposure check box. When a face is detected, the camera can enhance brightness of the face to make the face image clear.
Face Target BrightnessSet the face target brightness. It is 50 by default.
Face Exposure Detection IntervalSet the face exposure detection interval to prevent image flickering caused by constant adjustment of face exposure. It is five seconds by default.
Pixel CounterClick Draw Target next to Pixel Counter, and then press and hold the left mouse button to draw a rectangle, the Pixel Counter then displays its pixel.

Step 7 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".
Step 8 Click Save.
To view alarm information on the Alarm tab, subscribe relevant alarm event. For details, see "5.1.2 Subscribing Alarm".

Result

The face detection result is displayed on the live interface.

  • The face pictures captured in real time and their attribute information is displayed.
  • Click a face picture in the display area, and the details are displayed.

Figure 5-63 Face detection result
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Main Stream Sub Stream 1 Sub Stream 2 Protocol TCP 2008-1520 Fare Detection: 258 Young Fem... Age Nfr. Off 2019-07-12 14:03:03 Mold... Male Age Nfr.. On 2019-07-12 13:53:48 Young Fem... Age Nfr Off 2019-07-12 13:53:44 Young Fem... Age Nfr On

5.12 Setting People Counting

People counting (including enter number, leave number and strand number in area), calibration configuration, queuing number, and view the people counting data in report form.

5.12.1 People Counting

The system counts the people entering and leaving the detection area. When the number of counted people exceeds the configured value, the system performs an alarm linkage.

Prerequisites

Select Setting > Event > Smart Plan, and then enable People Counting.

Procedure

Step 1 Select Setting > Event > People Counting.

Figure 5-64 People counting
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image People Counting Calibration Config Queuing Report No. Name Rule Type 1 People Counting 2 PC-1 In Area No. Parameter Setup OSD Clear Period Setting Flowrate Alarm Enter No. 2 Leave No. 2 Stranded No. 0 Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Global Setup Sensitivity - + 7 Max Height 220 cm (0~300) Min Height 50 cm (0~200) Default Refresh Save Draw Rule Clear Draw Line Clear

Figure 5-65 In area No.
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image People Counting Calibration Config Queuing Report 2020-05-27 16:89.03-We-4 No. Name Rule Type 1 1 People Counting 2 PC-1 In Area No. Parameter Setup Period Setting Regional Number Statistics Alarm Inside Number 2 (0~80) Type ≥Threshold Stranding Alarm Stranding Time 30 s (1~1800) Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Global Setup Sensitivity - + 7 Max Height 220 cm (0~300) Min Height 50 cm (0~200) Default Refresh Save

Step 2 Click + to add the people counting function.

Step 3 Double-click the name to modify the rule name. Select People Counting or In Area No.

  • People Counting: The system counts the people entering and leaving the detection area. When the number of counted number of people who enter, leave, or stay in the area exceeds the configured value, the system performs an alarm linkage.
  • In Area No.: The system counts the people in the detection area and the duration that people stay in the area. When the number of counted number of people in the detection area or the stay duration exceeds the configured value, the system performs an alarm linkage. This function is available on some select models.

Step 4 Click Draw Area to draw a detection area in the image.

  • When setting People Counting, you need to draw direction lines. When targets enter or leave along the direction line, they will be counted.
  • For the models that support multiple counting rules, different detection areas can be overlapped.

Step 5 Set parameters.

Table 5-16 Description of people counting parameters

ParameterDescription
OSDSelect the OSD check box or select the Enter No. or Leave No. check box under OSD to display the people counting data in the image.Click Clear to clear the count.
Flip Set the viewing angle of the image as Inclined or Vertical.
Flowrate AlarmSet Enter No., Leave No., and Stranded No. The alarm is triggered when the configured value is reached.
Regional People Number Statistics AlarmSet the number of people in the people counting region. When the people count reaches the threshold or the stay duration exceeds the configured value, the alarm is triggered.When you set inside number to be 0, and select the type to be≥Threshold, the system will not perform the alarm linkage.
Inside Number
Type
Stranding Alarm Select the Stranding Alarm check box, and then set the stranding time, when the stay duration exceeds the configured value, the alarm will be triggered.
Stranding Time
SensitivitySet the alarm-triggered sensitivity. The higher the sensitivity is, the easier the alarm will be triggered.
Max HeightSet the maximum height of the people in detection area. The unit is cm, and the range is 0–300.
Min HeightSet the minimum height of the people in detection area. The unit is cm, and the range is 0–200.

Step 6 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".
Step 7 Click Save.
To view alarm information on the Alarm tab, subscribe relevant alarm event. For details, see "5.1.2 Subscribing Alarm".

Result

You can view the counting results on the Live interface.

- For People Counting rule, the entry and exit numbers are displayed.

- For In Area No. rule, the inside number is displayed.

Figure 5-66 Counting result
Dahua Technology IPC-HDBW3841E-AS - Result - 1

text_image 2020-06-02 14:54:36 Tue Entire No. 110 便叫 People No. 0 PG-1 People No. 0 QUE-1

5.12.2 Calibration Configuration

After configuring the rule for people counting, set the installation height and angle of the camera through calibration configuration.

Prerequisites

You have set at least one rule in Setting > Event > People counting > People Counting.

Procedure

Step 1 Select Setting > Event > People Counting > Calibration Config.

Figure 5-67 Calibration configuration (stereo analysis)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image People Counting Calibration Config Queuing Report 392C-05-27 10:00.592Wed Installation Height 377 cm (0~1000) Installation Angle 86.6 ^ (0~90) Refresh Save Ground Clear

Step 2 Click Clear to clear the default calibration box.

Step 3 Click Ground to draw a rectangular box in the image.

Ground should be on the same plane and as big as possible for calibration.

Step 4 Click Save, and then the camera calculates its height above the ground and the angle it forms with the ground.

If the height and angle are quite different from the actual situation, repeat Step2 and Step3.

5.12.3 Queuing

The system counts the queue people in the detection area. When the queue people number exceeds the configured number or the queue time exceeds the configured time, the alarm is triggered, and the system performs an alarm linkage.

Prerequisites

Select Setting > Event > Smart Plan, and then enable People Counting.

Procedure

Step 1 Select Setting > Event > Queuing.

Figure 5-68 Queuing
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image People Counting Calibration Config Queuing Report 2020-05-27 10:68:25 Wed Draw Rule Clear No. Name Rule Type 1 QUE-1 Queuing 2 2 Queuing Parameter Setup Period Setting Queue People No. Alarm Queue People No. 30 (0~80) Type ≥Threshold Queue Time Alarm Queue Time 30 s (1~1800) Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Global Setup Sensitivity 7 Max Height 220 cm (0~300) Min Height 50 cm (0~200) Default Refresh Save

Step 2 Click + to add the queuing function.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

You can add 4 rules at most.

Step 3 Double-click the name to modify the rule name. Click Draw Rule to draw a detection area in the image, and right-click to complete the drawing.

Step 4 Set parameters.

Table 5-17 Description of people queuing

ParameterDescription
Queue People No. AlarmSet the queue people number for triggering the alarm and counting type. When the queue people number reaches the configured value, the alarm is triggered.
Queue People No.
Type
Queue Time AlarmSet the queue time. When the queue time reaches the configured value, the alarm is triggered.
Queue Time
SensitivitySet the alarm-triggered sensitivity. The higher the sensitivity is, the easier the alarm will be triggered.
Max HeightSet the maximum height of the people in detection area. The unit is cm, and the range is 0–300.
Min HeightSet the minimum height of the people in detection area. The unit is cm, and the range is 0–200.

Step 5 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 6 Click Save.

To view alarm information on the Alarm tab, subscribe relevant alarm event. For details, see "5.1.2 Subscribing Alarm".

Result

You can view the queuing result on the Live interface.

The queuing number and the stranding time of each target are displayed on the interface.

Figure 5-69 Queuing result
Dahua Technology IPC-HDBW3841E-AS - Result - 1

text_image 19:20:35

5.12.4 Viewing People Counting Diagram

You can search and export the heat map and tracking map according to the set searching criteria. This function is available on some fisheye cameras.

Step 1 Select Setting > Event > People Counting > Diagram.

Figure 5-70 Diagram
Dahua Technology IPC-HDBW3841E-AS - Viewing People Counting Diagram - 1

text_image People Counting Queuing Diagram Report Enable Report Type Heat Map Start Time 2019-04-16 17:00:00 End Time 2019-04-16 18:00:00 +Report max range is 1 week. Number of people Time Threshold 3 Minute Search First Report

Step 2 Select the Enable check box to enable diagram function. And then you can search the

diagram during the set period.

Step 3 Set the searching criteria.

Table 5-18 Description of searching criteria

ParameterDescription
Report TypeSelect the report type from the following two types:Heat Map: Density statistics of moving object, the color range is from blue to red, blue means the minimum heat value and red means the maximum heat value.Track Map: Tendency statistics of moving object.
Start TimeThe start time of the report.
End TimeThe end time of the report.
Number of PeopleWhen selecting heat map as the report type, you can select Number of People, and set the threshold. The system searches the diagram according to the number of people in the area, and shows the heat map.
Threshold
TimeWhen selecting heat map as the report type, you can select Time, and set the threshold. The system searches the diagram according to the queuing time in the area and shows the heat map.
Threshold

Step 4 Click Search to complete the diagram.
Click Export to export the report.

Figure 5-71 Diagram
Dahua Technology IPC-HDBW3841E-AS - Viewing People Counting Diagram - 2

text_image People Counting Quosing Diagram Report Enable Report Type Heat Map Start Time 2019-05-09 15:00:00 End Time 2019-05-09 16:00:00 -Report max range is 1 week. Number of people Time Threshold 50 Human Search Export 2019-05-09 15:00:00 ~ 2019-05-09 16:00:00 Heat Map Statistics 70/15-08.438 Be 423 30 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent 5.4x 45 percent

Dahua Technology IPC-HDBW3841E-AS - Viewing People Counting Diagram - 3
With the ruler on the right, you can read the diagram clearly.

5.12.5 Viewing People Counting Report

Generate people counting data in report form.

Step 1 Select Setting > Event > People Counting > People Counting Report.

Figure 5-72 People counting report
Dahua Technology IPC-HDBW3841E-AS - Viewing People Counting Report - 1

text_image People Counting Queuing Diagram Report Rule In Area No. Statistics Type Number of people Time Range Daily Start Time 2019-04-16 00 : 00 : 00 End Time 2019-04-16 18 : 00 : 00 *Daily report max range is 24 hours. Stranding Time 5s 30s 60s Chart Type Bar Chart Line Chart Rule1 Rule3 Search Export

Step 2 Set search conditions.

Table 5-19 Description of people counting report parameters

ParameterDescription
Rule Select the rule of the report from In Area No and Queuing.
Statistics TypeThe statistical type of people counting report.When you select Number of people, the system generates the report of the number of people that exceeds the configured number of people.When you select Average stranding time, the system generates the report of the average stranding time that exceeds the average stranding time.
Time RangeSelect the period for the report.When selecting People Counting, you can view daily report, monthly report and annual report.When selecting In Area No., you can view daily report and monthly report.
Begin TimeThe begin time and the end time of people counting.
End Time
People Counting DirectionIn and out directions of people counting report. You can select Entrance or Leave. Select Display Data, and the statistical quantity is displayed on the report.
Stranding TimeCount the stay time, select 5 s, 30 s, or 60 s.
Queue TimeCount the queuing time, select 1 minute, 5 minutes, or 10 minutes.
Report Type (Bar Chart/Line Chart)Includes bar chart and line chart.
Rule 1, Rule 2...Select the check box to search the report of the corresponding rule.

Step 3 Click Search to complete the report.
Click Export to export the report in .bmp or .csv format.

5.13 Setting Heat Map

Make statistics on the cumulative density of object movement and view heat map in report.

5.13.1 Heat Map

Detect the distribution of dynamically moving objects in the target area within a certain period and displays the distribution on a heat map. Color varies from blue to red. The lowest heating value is in blue, and the highest heating value is in red. When mirroring occurs on the camera or the viewing angle changes, original data on the heat map will be cleared.

Prerequisites

Select Setting > Setting > Event > Smart Plan, and then enable Heat Map.

Procedure

Step 1 Select Setting > Event > Heat Map > Heat Map.

Figure 5-73 Heat map

Step 2 Select the Enable check box to enable the heat map function.

Step 3 Set the arming period. For details, see "5.1.1.1 Setting Period".

Step 4 Click Save.

5.13.2 Viewing Heat Map Report

The system can export heat map data as a report.

Step 1 Select Setting > Event > Heat Map > Report.

Figure 5-74 Heat map report
Dahua Technology IPC-HDBW3841E-AS - Viewing Heat Map Report - 1

text_image Heat Map Report Start Time 2019-07-12 00 : 00 : 00 End Time 2019-07-12 12 : 00 : 00 Report max range is 1 week Search Export Report

Step 2 Set the start time and end time.
Only some devices support heat map sequence numbers.
Step 3 Click Search to complete the report.
Click Export to export the statistical report.

5.14 Setting Vehicle Density

Configure the rules for traffic congestion and parking upper limit, and view the counting data on the Live interface.

Prerequisites

Select Setting > Event > Smart Plan, and then enable Vehicle Density.

Procedure

Step 1 Select Setting > Event > Vehicle Density.

Figure 5-75 Vehicle density (traffic congestion)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Vehicle Density No. Region Scene Delete 1 VD-1 Traffic Congl 2 VD-2 Parking Upp Parameter Setup Period Setup Repeat Alarm Time 0 s (0~300) Vehicle Congestio... Threshold 50 vehicles (10~1000) Continuous Cong... 10 Min (1~100) Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Draw Area Clear Pixel Counter 0 0 Draw Target Default Refresh Save

Figure 5-76 Vehicle density (parking upper limit)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Vehicle Density No. Region Scene Delete ✓ 1 VD-1 Traffic Cong ✓ 2 VD-2 Parking Upp Parameter Setup Period Setup Repeat Alarm Time 0 s (0~300) Upper Limit Vehicle... Threshold 20 vehicles (10~1000) Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Draw Area Clear Pixel Counter 0 * 0 Draw Target Default Refresh Save

Step 2 Click + to add the vehicle density function.
Step 3 Double-click the name to modify the rule name. Select Traffic Congestion or Parking Upper Limit.

  • Traffic Congestion: The system counts the vehicles in the detection area. When the counted vehicle number and the continuous congestion time exceed the configured values, an alarm is triggered and the system performs an alarm linkage.
  • Parking Upper Limit: The system counts the vehicles in the detection area. When the counted vehicle number exceeds the configured value, an alarm triggered and the system performs an alarm linkage.

Step 4 Click Draw Area to draw a detection area in the image.

Step 5 Set parameters.

Table 5-20 Description of people counting parameters

ParameterDescription
Repeat Alarm TimeAfter the alarm is triggered, if the status lasts for the configured time in Repeat Alarm Time, the alarm will be triggered again.0 indicates that the function is disabled.
Vehicle Congestion AlarmSelect the check box, and set the Threshold and Continuous Congestion Time.When the counted vehicle and the continuous congestion time exceed the configured values, an alarm is triggered.
Upper Limit Vehicle Quantity AlarmSelect the check box, and set the Threshold.When the counted vehicle exceeds the configured values, an alarm is triggered.
Pixel CounterClick Draw Target next to Pixel Counter, and then press and hold the left mouse button to draw a rectangle, thePixel Counter then displays its pixel.

Step 6 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 7 Click Save.

To view alarm information on the Alarm tab, subscribe relevant alarm event. For details, see "5.1.2 Subscribing Alarm".

Result

You can view the counting result on the Live interface.

  • For Traffic Congestion rule, the entry and exit numbers are displayed.
  • For Parking Upper Limit rule, the inside number is displayed.

Figure 5-77 Traffic congestion
Dahua Technology IPC-HDBW3841E-AS - Result - 1

natural_image Aerial fisheye view of a multi-lane highway interchange with surrounding urban buildings and greenery (no visible text or signage)

Figure 5-78 Parking upper limit
Dahua Technology IPC-HDBW3841E-AS - Result - 2

natural_image Aerial fisheye view of a large commercial parking lot surrounded by urban buildings and greenery (no visible text or signage)

5.15 Setting Stereo Analysis

Stereo analysis includes rule configuration and calibration configuration.

5.15.1 Setting Rules for Stereo Analysis

The rules for stereo analysis include Activation Analysis, Back Detection, Fall Detection, Walking Detection, Blackboard Writing Detection, Violence Detection, People No. Error,, Stand Detection, Running Detection, People Approaching Detection, and Strand Detection.

Prerequisites

Select Setting > Event > Smart Plan, and then enable Stereo Analysis For the functions and applications of the rules, see Table 5-21.

Table 5-21 Description of stereo analysis function

RuleFunctionApplicable Scene
Activation AnalysisWorking with a recording & broadcasting server, the camera monitors the target's positions in the front of the classroom and analyzes the data, and then generates a report.Classrooms
Back DetectionWhen the camera monitors the front of the classroom works with a recording & broadcasting server, and detects a target with back to the camera, an alarm will be triggered.Classrooms
Fall DetectionWhen walking or standing people in the detection area suddenly fall down on the ground, the alarm will be triggered.Park and hall
Walking DetectionWhen the camera that monitors the front of the classroom works with a recording & broadcasting server, and detects a working target, an alarm will be triggered.Classrooms
Blackboard Writing DetectionWhen the camera that monitors the front of the classroom works with a recording & broadcasting server, and detect blackboard writing actions, an alarm will be triggered.When configuring the rule, click Draw Close-up Area to draw the blackboard as the close-up area, and then the image of sub stream 3 switches to close-up image from the global image.Classrooms
Violence DetectionWhen people walking or standing inside or outside the self-service hall or ATM protection cabin have violent movement (such as smashing ATM machine) or fighting, an alarm will be triggered.Bank halls and ATM protection cabins
People No. Error (vary from devices.)The camera can recognize the real-time number of people in the detection area. When the number of people exceeds the configured value, an alarm will be triggered.When a recording & broadcasting server is used, the camera that monitors the front of a classroom needs to be configured this function. With this function, the teacher's actions can be traced and enlarged. When the number of people in the image is not 1, the global image is displayed.Scenic spots and banksClassrooms
Stand DetectionWhen a recording & broadcasting server is used, the camera that monitors the area where the students stay needs to be configured with this function. When only 1 standing person in the image, an alarm will be triggered, and enlarge the person; when the number of people in the image is not 1, or the stand time is longer than the defined time, the global image is displayed.Classrooms
Running DetectionWhen the camera detects a running person, an alarm will be triggered.Classrooms
People Approaching DetectionWhen the distance between two walking/standing people reaches the configured value, an alarm will be triggered.Banks and educational institutions
Strand DetectionWhen people in the detection area stay longer than the configured stranding time, an alarm will be triggered.Banks and parks

This section takes Fall Detection as an example to introduce the configuration of stereo analysis rule.

Procedure

Step 1 Select Setting > Event > Stereo Analysis > Stereo Analysis.

Step 2 Click +, double-click the name to modify the rule name, and then select Fall Detection as Rule Type.

Figure 5-79 Fall detection
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Stereo Analysis Calibration Config Zoom Calibration Report No. Name Type 1 SA-1 Fall Detection Parameter Setup Period Setting Sensitivity - + 5 Duration 1 Sec. (1~60) Repeat Alarm: 0 Sec. (0~300) Record 1 2 Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email PTZ Snapshot 1 2 Draw Rule Clear Default Refresh Save

Step 3 (Optional) Click Clear to delete the default rule box, and then click Draw Rule to draw a detection area in the image.

  • When configuring People No. Error for a recording & broadcasting device, draw the front of a classroom as the detection area.
  • When configuring Stand Detection for a recording & broadcasting device, draw the area where the students stay as the detection area.
  • When configuring Activation Analysis, draw the front of a classroom as the detection area.
  • When configuring Back Detection, draw the front of a classroom as the detection area.
  • When configuring Blackboard Writing Detection, draw the blackboard as the detection area, and make sure that the detection are larger than the blackboard. Click Draw Close-up Area draw the blackboard as the close-up area.
  • For other devices without special requirements, use the default box of the system (draw the full screen as the detection area).

Step 4 Set parameters.

Parameters for recording device and common device are different. The actual interface shall prevail.

Table 5-22 Description of stereo analysis parameters

ParameterDescription
SensitivitySet the alarm-triggered sensitivity. The higher the sensitivity is, the easier the alarm will be triggered.
Alarm People AmountWhen configuring People No. Error, set the alarm people amount
Alarm Typeand alarm type. Alarm type includes Greater than, Equal to, Less than, and Unequal to.When the real-time number of people in the detection area is greater than, equal to, less than, or unequal to Alarm People Amount, the alarm is triggered.
DurationFor People Approaching Detection, when the time for people approaching reaches the configured value, the alarm is triggered.For Fall Detection, when the time of people falling down on the ground reaches the configured value, the alarm is triggered.For People No. Error, when the number of people in the area reaches the configured value of alarm people amount and alarm type, and the time reaches the configured value, the alarm is triggered.
Close-up ModeFor people No. error function for a recording device, select Tracking Mode as Close-up Mode. Then the camera traces the teacher's walking trajectory. You can view the tracking effect through sub stream 1 of the live interface. When the number of people on the image is not 1, the full screen is displayed.When setting the stand detection function for a recording device, select Fixed Mode as Close-up Mode. Then sub stream 1 enlarges and displays the image of standing people. When the number of standing people is not 1, the full screen is displayed.Before viewing the tracking or enlargement effect through sub stream 1, ensure that sub stream 1 is enabled and the resolution of the main stream and sub stream is 1080p. For configuration details of the main and sub streams, see "4.5.2.1 Video".
Repeat Alarm TimeAfter the alarm is triggered, if the status lasts for the configured time in Repeat Alarm Time, the alarm will be triggered again.0 indicates that the function is disabled.
Strand Time ThresholdWhen configuring Strand Detection, you need to set the strand time threshold. When people in the area stay longer than the configured strand time threshold, the alarm is triggered.

Step 5 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage".
Step 6 Click Save.

  • Select Setting > Event > Stereo Analysis > Calibration Config to finish calibration configuration for other devices, and then the detection rule becomes valid. For details, see "5.15.2 Calibration Configuration".
  • To view alarm information on the Alarm tab, you should subscribe relevant alarm

event. For details, see "5.1.2 Subscribing Alarm".

5.15.2 Calibration Configuration

After configuring the rule for stereo analysis, set the installation height and angle of the camera through calibration configuration. There are two calibration modes: Calibration mode 1: Directly enter the installation height and angle according to the actual conditions; calibration mode 2: Draw an area in the image to automatically calculate the installation height and the angle. This section takes calibration mode 2 as an example.

Prerequisites

You have set at least one rule in Setting > Event > Stereo Analysis > Stereo Analysis.

Procedure

Step 1 Select Setting > Event > Stereo Analysis > Calibration Config.

Figure 5-80 Calibration configuration (stereo analysis)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Stereo Analysis Calibration Config Zoom Calibration Report 2020-12-28 15:49:28 IPC2 Type Rectangle Calibration Installation Height 0 cm (0~1000) Installation Angle 0 ° (0~90) Refresh Save Ground Clear

Step 2 Click Clear to clear the default calibration box.

Step 3 Click Ground to draw a rectangular box in the image.

Ground should be on the same plane and as big as possible for calibration.

Step 4 Click Save, and then the camera calculates its height above the ground and the angle it forms with the ground.

If the height and angle are quite different from the actual situation, repeat Step2-Step4.

5.15.3 Zoom Calibration

When configuring People No. Error and Stand Detection rule, you need to configure the enlarging zoom in the image of sub stream 1. When the number of people in the image is not 1, the global image (sub stream 1) is displayed.

Prerequisites

You have set at least one rule in Setting > Event > Stereo Analysis > Stereo Analysis.

Dahua Technology IPC-HDBW3841E-AS - Prerequisites - 1

Zoom configuration is only available on recording & broadcasting devices.

Procedure

Step 1 Select Setting > Event > Stereo Analysis > Zoom Configuration.

Step 2 Configure the zoom.

  • Method 1: Click Calibration Area, and then draw a rectangular box in the image, which is size of the enlarged image of sub stream 1.
  • Method 2: Set the zoom value. For example, if you want the target to be 1/5 of the image, set the zoom value to 5.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

  • When calibrating the zoom for Stand Detection, make sure that there is 1 person in the image at least.
  • When calibrating the zoom for People No. Error, make the calibration box in the center of the image, and the zoom value larger than 3. Some models only support calibration by drawing calibration area.

Figure 5-81 Calibration configuration (stereo analysis)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Stereo Analysis Calibration Config Zoom Calibration Report Zoom 5 Refresh Save 2020-12-08 16:17:26 IPC2 Calibration. Clear

Step 3 Click Save.

5.15.4 Viewing Report

Working with a recording & broadcasting server, the camera monitors the target's positions in the front of the classroom and analyzes the data, and then generates a report.

Prerequisites

You have set at least one rule in Setting > Event > Stereo Analysis > Stereo Analysis.

Procedure

Step 1 Select Setting > Event > Stereo Analysis > Report.

Step 2 Select the start time and end time.

You can search for reports within the time range of 30 minutes–24 hours.

Step 3 Set the number of screen sections.

We recommend splitting the window into 2^n windows.

Step 4 Click Search.

Figure 5-82 Report
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Stereo Analysis Calibration Config Zoom Calibration Report Start Time 2020-12-28 06:00 End Time 2020-12-28 23:59 You can only query reports within the time range of 30 minutes~24 hours. Number of Screen Sections 8 (2~125) We recommend splitting the window into 2* windows. Search 2020-12-28 06:00:00 ~ 2020-12-28 23:59:00 Activation Analysis 2020-12-28 16:43:16 IPC2 1637 2106 1837 9554 1549 1504

5.16 Setting ANPR

Extract information of motor vehicles and display related attributes on the live interface.

5.16.1 Scene Configuration

Configure non-motor vehicle detection.

Prerequisites

Select Setting > Event > Smart Plan, and then enable ANPR.

Procedure

Step 1 Select Setting > Event > ANPR > Scene Set.

Figure 5-83 Scene set (ANPR)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image Scene Set Picture Report No. Name Rule Type 1 VehicleSelect Motor Vehic Parameter Setup Traffic Flow Stat... OSD Clear Period Setting Snap Mode Optimized Capture Complete Vehicle Relay-out 1 2 Alarm Delay 10 s (10-300) Default Refresh Save Detect Region Draw Clear Exclude Re... Draw Modify Clear Target filter Max Size 8191 * 6191 Min Size 0 * 0 Pixel Counter 0 * 0 Draw Target Clear Draw Target

Step 2 Click Draw to draw a detect region and an exclude region in the image.

  • Detect region: The region that needs to be detected.
  • Exclude region: The region that does not need to be detected. Click Modify to modify the drawn region.

Click Clear at the right side to draw the detection area again.

Step 3 Click Draw Target next to Target Filter to draw the maximum size and minimum size for the detection target in the image.

Step 4 Configure parameters.

Table 5-23 Description of scene set parameters (ANPR)

ParameterDescription
Traffic Flow Statistics SelectTraffic Flow Stat, and the device detects the number of motor vehicles and non-motor vehicles in the detection area and generates the statistical report. If Traffic Flow Stat is disabled, the report has no statistical data.Select OSD to display the statistical result on the preview interface. To clear the statistical result, click Clear.
OSD
Snap Mode Select the snap mode: Optimized Snap and Tripwire.
Relay-outSelect the Relay-out check box, and when alarm is triggered, the system interacts with the linked alarm devices.
Alarm DelayThe Alarm linkage keeps running for the configured time after alarm is ended.

Step 5 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage".

Step 6 Click Save.

Result

The ANPR result is displayed on the live interface.

- The plate no. and attribute information of vehicle are displayed at the right side.

- Click the picture in the display area, and the detailed information is displayed.

Figure 5-84 ANPR result
Dahua Technology IPC-HDBW3841E-AS - Result - 1

text_image Van Stream Sub Stream 1 Sub Stream 2 Sub Stream 3 Sub Stream 4 Prebool TCP 47.29.0p 2019-07-13 15:45:14 PC AE8845 Black SaloonCar Toyota 2019-07-13 15:45:11 AT18516 Green SaloonCar Kia 2019-07-13 15:45:09 BAF06119 White SaloonCar Toyota 2019-07-13 15:45:03 ASLT7I Black SUV Toyota

5.16.2 Setting Picture Overlay

Set overlay of motor vehicle.

Step 1 Select Setting > Event > ANPR > Picture.

Figure 5-85 Picture
Dahua Technology IPC-HDBW3841E-AS - Setting Picture Overlay - 1

text_image Scene Set Picture Report Car Type Car Color Plate No. Car Logo Picture Overlay Type Motor Vehicle ✓ Plate No. ✓ Car Color ✓ Car Type ✓ Car Logo □ Sunshield □ Seatbelt □ Smoking Status □ Calling Status □ Ornament □ Inspection Sticker □ Time □ Location Upload Picture ✓ Vehicle Body Pic... Default Refresh Save

Step 2 Select Motor Vehicle from the Type drop-down list.

Step 3 Set overlay information and box position, such as plate no., time, car color, car type, and car logo.

Step 4 Click Save.

5.16.3 Viewing ANPR Report

Generate data of ANPR in report form.

Step 1 Select Setting > Event > ANPR > Report.

Figure 5-86 Report
Dahua Technology IPC-HDBW3841E-AS - Viewing ANPR Report - 1

text_image Scene Set Picture Report Report Type Hour Report Start Time 2019-07-12 12 : 00 : 00 End Time 2019-07-12 13 : 00 : 00 -Max query range of report is 1 hour. Statistics Type Motor Vehicle Display No. Report Type Bar Chart Line Chart Search Export

Step 2 Select the report type, start time, end time, and other parameters.

Step 3 Click Search.

The statistical results are displayed. Then click Export to export the statistical report.

Figure 5-87 Statistical results
Dahua Technology IPC-HDBW3841E-AS - Viewing ANPR Report - 2

bar | Time | Motor Vehicle | | :--- | :--- | | 07/13 14:35 | 29 | | 07/13 14:40 | 71 | | 07/13 14:45 | 266 | | 07/13 14:50 | 215 | | 07/13 14:55 | 218 | | 07/13 15:00 | 214 | | 07/13 15:05 | 197 | | 07/13 15:10 | 237 | 2019-07-13 14:35:00 ~ 2019-07-13 15:15:00 ANPR

5.17 Setting Video Metadata

Classify people, non-motor vehicles and motor vehicles in the captured video, and display the relevant attributes on the live interface.

5.17.1 Scene Configuration

Set the detection scenes and rules, including rules for people, non-motor vehicles and motor vehicles.

Select Setting > Event > Smart Plan, and then enable Video Metadata.

Take setting of the People Detection rules as an example.

Step 1 Select Setting > Event > Video Metadata > Scene Set.

Figure 5-88 Scene set (video metadata)
Dahua Technology IPC-HDBW3841E-AS - Scene Configuration - 1

text_image Scene Set Picture Report No Name Rule Type 1 Rule1 People 2 Rule2 Non-motor 3 Rule3 Motor Vehic Parameter Setup Traffic Flow Stal... OSD Clear Period Setting Snap Mode Optimized Capture Complete Vehicle Relay-out 1 2 Alarm Delay 10 s (10~300) Global Setup Privacy Protection Face Face Enhancement Snap Face Image One-inch photo Enable Face Exposure Face Target Enightn... 50 Face Exposure Det... 5 Scene Distant View Default Refresh Save Detect Region Draw Clear Exclude Re... Draw Modify Clear Target filter Max Size 8191 8191 Min Size 0 0 Pixel Counter 0 0 Draw Target Clear Draw Target Draw Target

Step 2 Click +, and double-click the name to modify the rule name, and select People in Rule Type list.

Step 3 Click Draw to draw a detect region and an exclude region in the image.

Step 4 Click Draw Target next to Target Filter to draw the maximum size and minimum size for the detection target in the image.

Step 5 Set parameters.

Table 5-24 Description of scene set parameters (video metadata)

ParameterDescription
People Flow StatisticsSelect the People Flow Statistics check box to count the number of people in the detection area.
Traffic Flow StatSelect the Traffic Flow Statistics check box to count the number of motor vehicles in the detection area.
Capture whole vehicleSelect the Capture Whole Vehicle check box to capture whole vehicle. The snapshot is saved in the preset path for monitoring snapshots. For details, see "4.5.2.5 Path".
Non-motor Vehicle Flow StatisticsSelect the Non-motor Vehicle Flow Statistics check box to count the number of non-motor vehicles in the detection area.
OSDSelect the OSD check box, and the numbers of motor vehicles, non-motor vehicles and people in the detection area are displayed.Click Reset to recount.
Pixel CounterClick Draw Target next to Pixel Counter, and then press and hold the left mouse button to draw a rectangle, the Pixel Counter then displays its pixel.
Privacy ProtectionSelect the Privacy Protection check box and then select Face or Human body from the drop-down list to blur faces or human bodies in the image.
Face EnhancementSelect the Face Enhancement check box to preferably guarantee clear face with low stream.
Snap Face ImageSet a range for snapping face image, including face picture and one-inch picture.
Enable Face ExposureSelect the Enable Face Exposure check box to make face clearer by adjusting lens aperture and shutter.
Face Target BrightnessSet the face target brightness, and it is 50 by default.
Face Exposure Detection IntervalSet the face exposure detection interval to prevent image flickering caused by constant adjustment of face exposure. It is 5 seconds by default.
Scene Set scene asDistant View or Close View.

Step 6 Set arming periods and alarm linkage actions. For details, see "5.1.1 Alarm Linkage". Step 7 Click Save.

Result

Click 📄 on the live interface to view the detection results of video metadata.

  • The plate no. and attributes of motor vehicle are displayed at the right side, and pictures of people and non-motor vehicles and their attributes at the bottom.
  • Click the picture in the display area, and the detailed information is displayed.

Figure 5-89 Video metadata result
Dahua Technology IPC-HDBW3841E-AS - Result - 1

text_image Main Stream Sub Stream 1 Sub Stream 2 Sub Stream 3 Sub Stream 4 Preboot TCP 2019-07-03 15:44:06 FAB9317 Red Minkor Nissan 2019-07-13 15:44:15 ATJ333 Blue SailoonCar Happal 2019-07-13 15:44:08 B328WE White SailoonCar Volvo 2019-07-13 15:44:07 TA2967J White MPV BMW

5.17.2 Setting Picture Information

Set overlay of motor vehicle, non-motor vehicle and people and the box position. This section takes the configuration of motor vehicle overlay as an example.

Step 1 Select Setting > Event > Video Metadata > Picture.

Figure 5-90 Picture (video metadata)
Dahua Technology IPC-HDBW3841E-AS - Setting Picture Information - 1

text_image Scene Set Picture Report Car Type Car Color Plate No. Car Logo Picture Overlay Type Motor Vehicle ✓ Plate No. ✓ Car Color ✓ Car Type ✓ Car Logo □ Sunshield □ Seatbelt □ Smoke □ Calling □ Ornament □ Inspection Sticker □ Time □ Location Upload Picture ✓ Vehicle Body Plc... Default Refresh Save

Step 2 Select Motor Vehicle from the Type drop-down list. Select Non-motor Vehicle or People, and set non-motor vehicle and people overlay.

Step 3 Set overlay information and box position, such as plate no., time, car color, car type, and car logo.

Step 4 Click Save.

5.17.3 Viewing Video Metadata Report

Generate data of video metadata recognition in report form.

Step 1 Select Setting > Event > Video Metadata > Report.

The Report interface is displayed.

Step 2 Select the report type, start time, end time, and other parameters.

Step 3 Click Search to complete the report.

The statistical results are displayed. Click Export to export the statistical report.

Figure 5-91 Video metadata report
Dahua Technology IPC-HDBW3841E-AS - Viewing Video Metadata Report - 1

bar 2019-03-01 ~ 2019-03-11 Structured Statistics | Date | Water Vehicle#184 | Non liquid Vehicle#185 | Proposed23/12 | |---|---|---|---| | 2019-03-01 | 9266 | 528 | 142 | | 2019-03-02 | 628 | 4397 | 1313 | | 2019-03-03 | 4797 | 4174 | 654 | | 2019-03-04 | 9685 | 8211 | 3492 | | 2019-03-05 | 9688 | 8041 | 2444 | | 2019-03-06 | 9655 | 8882 | 3185 | | 2019-03-07 | 9578 | 9279 | 3211 | | 2019-03-08 | 9625 | 8985 | 2964 | | 2019-03-09 | 6235 | 5849 | 1234 | | 2019-03-10 | 4428 | 4468 | 111 | | 2019-03-11 | 7688 | 7477 | 2724 | The chart displays a stacked bar chart with the x-axis representing dates from March 2019 to March 2020 and the y-axis showing numerical values. The legend indicates three categories: Water (red), Non liquid (blue), and Proposed (green). The data is presented in a table format with columns for each date and category. The total values per year are explicitly labeled on the chart.

5.18 Setting Relay-in

When an alarm is triggered at the alarm-in port, the system performs alarm linkage.

Dahua Technology IPC-HDBW3841E-AS - Setting Relay-in - 1

Functions might vary with different models.

5.18.1 Relay-in (1)

Step 1 Select Setting > Event > Alarm.

Figure 5-92 Alarm linkage
Dahua Technology IPC-HDBW3841E-AS - Relay-in (1) - 1

text_image Alarm Enable Relay-in Alarm1 Period Setting Anti-Dither 0 s (0~100) Sensor Type NO Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Snapshot Default Refresh Save

Step 2 Select the Enable check box to enable the alarm linkage function.

Step 3 Select a relay-in port and a sensor type.

  • Sensor Type: NO or NC.
  • Anti-Dither: Only record one alarm event during the anti-dither period.

Step 4 Set arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage".

Step 5 Click Save.

5.18.2 Relay-in (2)

You can select the mode from Alarm and Arming/Disarming.

Figure 5-93 Select the mode
Dahua Technology IPC-HDBW3841E-AS - Relay-in (2) - 1

text_image Alarm Enable Relay-in Alarm1 Mode Alarm Arming/Disarming
  • When selecting Alarm, the function is same as Relay-in (1). For details, see "5.18.1 Relay-in (1)".
  • When selecting Arming/Disarming, you can enable arming or disarming mode through one press on an external alarm system.

Step 1 Select Enable check box to enable the alarm function.

Step 2 Select a relay-in port, for details, see "5.18.1 Relay-in (1)".

Step 3 In the Mode list, select Arming/Disarming.

Figure 5-94 Arming/Disarming
Dahua Technology IPC-HDBW3841E-AS - Relay-in (2) - 2

text_image Alarm Enable Relay-in Alarm1 Mode Arming/Disarming Sensor Type NO Arming/Disarming Default Refresh Save

Dahua Technology IPC-HDBW3841E-AS - Relay-in (2) - 3

The arming/disarming check box is selected by default. Do not cancel the selection; otherwise the configuration is invalid.

Step 4 Select the sensor type from NO and NC..

Step 5 Click Save.

5.19 Setting Abnormality

Abnormality includes SD card, network, illegal access, voltage detection, and security exception.

Dahua Technology IPC-HDBW3841E-AS - Setting Abnormality - 1

Only the device with SD card has the abnormality functions, including No SD Card, SD Card Error, and Capacity Warning.

5.19.1 Setting SD Card

In case of SD card abnormality, the system performs alarm linkage. The event types include No SD Card, Capacity Warning, and SD Card Error. The introduction is for reference only, and may differ from the actual interface.

Step 1 Select Setting > Event > Exception Handling > SD Card.

Figure 5-95 SD card
Dahua Technology IPC-HDBW3841E-AS - Setting SD Card - 1

text_image SD Card Network Illegal Access Security Exception Event Type No SD Card Enable Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Default Refresh Save

Step 2 Select the event type from the Event Type drop-down list, and then select the Enable check box to enable the SD card detection function. When setting Capacity Warning as Event Type, set Capacity Limit. When the remaining space of SD card is less than this value, the alarm is triggered.

Step 3 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 4 Click Save.

5.19.2 Setting Network

In case of network abnormality, the system performs alarm linkage. The event types include Disconnection and IP Conflict.

Step 1 Select Setting > Event > Abnormality > Network.

Figure 5-96 Network
Dahua Technology IPC-HDBW3841E-AS - Setting Network - 1

text_image SD Card Network Illegal Access Security Exception Event Type Disconnection Enable Record Record Delay 10 s (10~300) Relay-out 1 2 Alarm Delay 10 s (10~300) Default Refresh Save

Step 2 Select the event type from the Event Type drop-down list, and then select the Enable check box to enable the network detection function.

Step 3 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 4 Click Save.

5.19.3 Setting Illegal Access

When you enter a wrong login password more than the set times, the system performs alarm linkage.

Step 1 Select Setting > Event > Abnormality > Illegal Access.

Figure 5-97 Illegal access
Dahua Technology IPC-HDBW3841E-AS - Setting Illegal Access - 1

text_image SD Card Network Illegal Access Security Exception Enable Login Error 5 time (3~10) Relay-out 1 2 Alarm Delay 10 s (10~300) Send Email Default Refresh Save

Step 2 Select the Enable check box to enable the illegal access detection function.

Step 3 Set Login Error.

If you consecutively enter a wrong password more than the set value, the account will be locked.

Step 4 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 5 Click Save.

5.19.4 Setting Voltage Detection

When the input voltage is higher than or lower than the rated value of the device, the system performs alarm linkage.

Step 1 Select Setting > Event > Abnormality > Voltage Detection.

Figure 5-98 Voltage detection
Dahua Technology IPC-HDBW3841E-AS - Setting Voltage Detection - 1

text_image SD Card Network Illegal Access Voltage Detection Security Exception Enable Overlay Send Email Default Refresh Save

Step 2 Select the Enable check box to enable the voltage detection function.

Select Overlay, and the alarm icon is displayed by overlapping when the alarm is triggered.

Dahua Technology IPC-HDBW3841E-AS - Setting Voltage Detection - 2

indicates undervoltage and 🍒 indicates overvoltage.

Step 3 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".

Step 4 Click Save.

5.19.5 Setting Security Exception

When a hostile attack is detected, the system performs alarm linkage.

Step 1 Select Setting > Event > Abnormality > Security Exception.

Step 2 Select the Enable check box.

Figure 5-99 Security exception
Dahua Technology IPC-HDBW3841E-AS - Setting Security Exception - 1

text_image SD Card Network Illegal Access Voltage Detection Security Exception Enable Event Monitoring ✓ Trusted environment detected progr ... ✓ Brute force attack of web path ✓ Account login exceeds the set time r... ✓ Session connection exceeds limit ✓ Session ID Brute Force Attack ✓ Relay-out Alarm Delay 10 s (10~300) Send Email Default Refresh Save

Step 3 Select the event to be monitored as needed.

Table 5-25 Security exception description

ParameterDescription
Trusted environment detected programMonitors the programs that run in trusted environment to detect whether there are program running without trusted signature.Select it to prevent the program with trojan and virus.
Account login exceeds the set time rangeThe account tries to login during the period that does not allow user to log in.Configure Restricted Login in Setting > System > Account > Account > Username, including the IP address, validity period, and time range.
Session ID Brute Force AttackWhen sessionid false reaches the configured threshold in the defined period, an alarm will be triggered.Select it to monitor attacks in real time, so that attacks can be prevented timely.
Brute force attack of web pathGenerates the web serve directory and send a request through enumeration. When URL false reaches the configured threshold in the defined period, an alarm will be triggered.Select it to monitor attacks in real time, so that attacks can be prevented timely.
Session connection exceeds limitThe number of users (web, platform or mobile phone client) exceeds the max number of users that can connect to the device simultaneously.Configure the Max Connection in Setting >Network >Port.

Step 4 Set alarm linkage actions. For details, see "5.1.1 Alarm Linkage".
Step 5 Click Save.

5.19.6 Setting Disarming

You can disable the linkage actions through the app on your smart phone, and then the system will not perform any linkage action, but alarm records will still be generated.

Step 1 Select Setting > Event > Disarming.

Figure 5-100 Disarming
Dahua Technology IPC-HDBW3841E-AS - Setting Disarming - 1

text_image Disarming Disarming Enable Close Disarm by Period Enable (Disarm by Period will be valid after one-click disarm is disabled.) Disarm Period Setting Disarm Alarm Linka... ✓ Select All ✓ Relay-out ✓ Send Email ✓ Audio Linkage ✓ Warning Light Default Refresh Save

Step 2 Select the Enable check box to disarm.

Step 3 (Optional) Select the Enable check box next to Disarm by Period to enable the Disarm by Period function, and then you can disarm by period. For setting disarm period, see "5.1.1.1 Setting Period".

Dahua Technology IPC-HDBW3841E-AS - Setting Disarming - 2

This function is only valid when Disarming is disabled.

Step 4 Select alarm linkage actions as needed.

Step 5 Click Save.

6 Maintenance

6.1 Requirements

To make sure the system runs normally, maintain it as the following requirements:

  • Check surveillance images regularly.
  • Clear regularly user and user group information that are not frequently used.
  • Modify the password every three months. For details, see "4.8.3 Account".
  • View system logs and analyze them, and process the abnormality in time.
  • Back up the system configuration regularly.
  • Restart the device and delete the old files regularly.
  • Upgrade firmware in time.

6.2 Auto Maintain

You can restart the system manually, and set the time of auto reboot and auto deleting old files. This function is disabled by default.

Step 1 Select Setting > System > Auto Maintain.

Figure 6-1 Auto maintain
Dahua Technology IPC-HDBW3841E-AS - Auto Maintain - 1

text_image Auto Maintain □ Auto Reboot □ Auto Delete Old Files Manual Reboot Refresh Save

Step 2 Configure auto maintain parameters.

  • Select the Auto Reboot check box, and set the reboot time, the system automatically restarts as the set time every week.
  • Select the Auto Delete Old Files check box, and set the time, the system automatically deletes old files as the set time. The time range is 1 to 31 days.

Dahua Technology IPC-HDBW3841E-AS - Auto Maintain - 2

When you enable and confirm the Auto Delete Old Files function, The The deleted files cannot be restored, are you sure? notice is displayed. Operate it carefully.

- Click Manual Reboot, and then click OK on the displayed interface, the camera will restart.

Step 3 Click OK.

6.3 Resetting Password

When you need to reset the password for the admin account, there will be a security code sent to

the entered email address which can be used to reset the password.

Prerequisites

You have enabled password reset service. For details, see "4.8.4.1 System Service".

Procedure

Step 1 Open IE browser, enter the IP address of the device in the address bar and press Enter.

Figure 6-2 Login
Dahua Technology IPC-HDBW3841E-AS - Procedure - 1

text_image @Jhua TECHNOLOGY Username: Password: Forgot password? Login Cancel

Step 2 Click Forgot password?

Figure 6-3 Prompt
Dahua Technology IPC-HDBW3841E-AS - Procedure - 2

text_image Prompt In order to provide a secure password/repair environment, we need to collect your e-mail address, device MAC address, device 5H, etc. All collected info is used only for the purposes of verifying device validity and sending a security code to you. Do you agree and want to continue the operation? OK Cancel

Step 3 Click OK.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 3

Clicking OK means that you are informed that some of your personal data might be collected to help reset the password, such as phone number, MAC address, and device serial number. Read the prompt carefully to decide whether to authorize the collection activity.

Figure 6-4 Reset the password (1)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 4

text_image Reset the password(1/2) SN: 2C04AB9YAZ00019 QR code: Please scan the QR code on the actual interface Note(for admin only): Option 1. Please download Easy4ip and then from Me-Settings-Reset device password, scan the left QR code. Option 2. Please use an APP to scan the left QR code to get special strings. And then send the strings to support_rpwd@global.dahuatech.com. The security code will be delivered to 1***@qq.com Security code: Cancel Next

Step 4 Reset the password.

Step 5 Scan the QR code, and there will be a security code sent to the email address you entered. Enter the security code as instructed.

Dahua Technology IPC-HDBW3841E-AS - Procedure - 5

  • Please use the security code within 24 hours after you receive it. Otherwise, it will become invalid.
  • If you fail to use the security code for two times continuously, there will be fail notice when you try to get a security code for the third time. You have to reset the device to get a security code or wait 24 hours to get it again.

Step 6 Click Next.

Figure 6-5 Reset the password (2)
Dahua Technology IPC-HDBW3841E-AS - Procedure - 6

text_image Reset the password(2/2) Username admin Password Weak Middle Strong Use a password that has 8 to 32 characters, it can be a combination of letter(s), number(s) and symbol(s) with at least two kinds of them. (please do not use special symbols like **: & ) Confirm Password Cancel Save

Step 7 Reset and confirm the password.

The password must consist of 8 to 32 non-blank characters and contain at least two types of characters among upper case, lower case, number, and special character (excluding '" ; : &).

Step 8 Click Save.

6.4 Backup and Default

6.4.1 Import/Export

  • Export the system configuration file to back up the system configuration.
  • Import system configuration file to make quick configuration or recover system configuration.

Step 1 Select Setting > System > Import/Export.

Figure 6-6 Import/Export
Dahua Technology IPC-HDBW3841E-AS - Import/Export - 1

text_image Import/Export Backup Path Import Export

Step 2 Click Import or Export.

  • Import: Select local configuration file, and click Open to import the local system configuration file to the system.
  • Export: Select the storage path, and click Save to export the system configuration file to local storage.

Step 3 Click Save to finish configuration.

6.4.2 Default

Restore the device to default configuration or factory settings.

Dahua Technology IPC-HDBW3841E-AS - Default - 1

This function will restore the device to default configuration or factory setting.

Select Setting > System > Default.

  • Click Default, and then all the configurations except IP address and account are reset to default.
  • Click Factory Default, and all the configurations are reset to factory settings.

Figure 6-7 Default
Dahua Technology IPC-HDBW3841E-AS - Default - 2

text_image Default Default Other configurations will be recovered to default except network IP address, user management and so on. Factory Default Completely recover device parameters to factory default.

6.5 Upgrade

Upgrading to the latest system can perfect camera functions and improve stability.

Dahua Technology IPC-HDBW3841E-AS - Upgrade - 1

If wrong upgrade file has been used, restart the device; otherwise some functions might not work properly.

Step 1 Select Setting > System > Upgrade.

Figure 6-8 Upgrade
Dahua Technology IPC-HDBW3841E-AS - Upgrade - 2

text_image Upgrade File Upgrade Select Firmware File Browse... Upgrade Online Upgrade ✓ Auto-check for updates Save System Version 2.800.0000000.0 R, Build Date: 2019-05-21 Manual Check

Step 2 Select upgrading method according to the actual needs.

- File Upgrade

  1. Click Browse, and then upload upgrade file.
  2. The upgrade file should be a .bin file.
  3. Click Upgrade.

The upgrade starts.

- Online Upgrade

  1. Select the Auto-check for updates check box.

The system checks for upgrade once a day automatically, and there will be system notice if any upgrade is available.

Dahua Technology IPC-HDBW3841E-AS - Upgrade - 3

We need to collect the data such as device name, firmware version, and device serial number to proceed auto-check. The collected information is only used for verifying the legality of cameras and upgrade notice.

  1. If there is any upgrade available, click Upgrade, and then the system starts upgrading.

Dahua Technology IPC-HDBW3841E-AS - Upgrade - 4

Click Manual Check to check for upgrade manually.

6.6 Information

You can view the information, including version, log and online user, and back up or clear log.

6.6.1 Version

You can view device information such as hardware, system version, and web version.

Select Setting > Information > Version to view the version information.

6.6.2 Log

You can view and back up logs.

Step 1 Select Setting > Information > Log.

Figure 6-9 Log
Dahua Technology IPC-HDBW3841E-AS - Log - 1

text_image Log Remote Log Start Time 2019-07-17 19 25 40 End Time 2019-07-18 19 25 40 Type All Search No. Log Time Username Log Type Detailed Information Time: Username: Type Content Backup

Step 2 Configure Start Time and End Time, and then select the log type.

The start time should be later than January 1st, 2000, and the end time should be earlier than December 31, 2037.

The log type includes All, System, Setting, Data, Event, Record, Account, and Safety.

  • System: Includes program start, abnormal close, close, program reboot, device closedown, device reboot, system reboot, and system upgrade.
  • Setting: Includes saving configuration and deleting configuration file.
  • Data: Includes configuring disk type, clearing data, hot swap, FTP state, and record mode.
  • Event (records events such as video detection, smart plan, alarm and abnormality): includes event start and event end.
  • Record: Includes file access, file access error, and file search.
  • Account: Includes login, logout, adding user, deleting user, modifying user, adding group, deleting group, and modifying group.
  • Safety: Includes password resetting and IP filter.

Step 3 Click Search.

- Click a certain log, and then you can view the detailed information in Detailed

Information area.

- Click Backup, and then you can back up all found logs to local PC.

Figure 6-10 Log (details)
Dahua Technology IPC-HDBW3841E-AS - Log - 2

text_image Log Remote Log Start Time 2019-07-17 19 : 25 : 40 End Time 2019-07-18 19 : 25 : 40 Type All Search Find 72 log Time 2019-07-17 19:55:03 - 2019-07-18 19:01:11 No. Log Time Username Log Type 1 2019-07-18 19:01:11 admin Set Time 2 2019-07-18 19:01:11 admin Set Time 3 2019-07-18 18:58:51 admin Set Time 4 2019-07-18 18:56:30 admin Login 5 2019-07-18 18:17:41 admin Logout 6 2019-07-18 18:01:11 admin Set Time 7 2019-07-18 18:01:11 admin Set Time 8 2019-07-18 17:58:51 admin Set Time 9 2019-07-18 17:31:36 admin Set Time 10 2019-07-18 17:31:36 admin Set Time Detailed Information Time: Username: Type: Content Backup

6.6.3 Remote Log

Configure remote log, and you can get the related log by accessing the set address.

Step 1 Select Setting > Information > Remote Log.

Figure 6-11 Remote log
Dahua Technology IPC-HDBW3841E-AS - Remote Log - 1

text_image Log Remote Log Enable IP Address Port 514 (1~65534) Device Number 22 (0~23) Default Refresh Save

Step 2 Select the Enable check box to enable remote log function.

Step 3 Set address, port and device number.

Step 4 Click Save.

6.6.4 Online User

View all the current users logging in to web.

Select Setting > Information > Online User.

Figure 6-12 Online user
Dahua Technology IPC-HDBW3841E-AS - Online User - 1

text_image Online User No. Username User Local Group IP Address User Login Time 1 admin admin 2020-01-14 15:02:04 Refresh

Appendix 1 Cybersecurity Recommendations

Cybersecurity is more than just a buzzword: it's something that pertains to every device that is connected to the internet. IP video surveillance is not immune to cyber risks, but taking basic steps toward protecting and strengthening networks and networked appliances will make them less susceptible to attacks. Below are some tips and recommendations from Dahua on how to create a more secured security system.

Mandatory actions to be taken for basic equipment network security:

1. Use Strong Passwords

Please refer to the following suggestions to set passwords:

  • The length should not be less than 8 characters.
  • Include at least two types of characters; character types include upper and lower case letters, numbers and symbols.
  • Do not contain the account name or the account name in reverse order.
  • Do not use continuous characters, such as 123, abc, etc.
  • Do not use overlapped characters, such as 111, aaa, etc.

2. Update Firmware and Client Software in Time

- According to the standard procedure in Tech-industry, we recommend to keep your equipment (such as NVR, DVR, IP camera, etc.) firmware up-to-date to ensure the system is equipped with the latest security patches and fixes. When the equipment is connected to the public network, it is recommended to enable the "auto-check for updates" function to obtain timely information of firmware updates released by the manufacturer.

- We suggest that you download and use the latest version of client software.

"Nice to have" recommendations to improve your equipment network security:

1. Physical Protection

We suggest that you perform physical protection to equipment, especially storage devices. For example, place the equipment in a special computer room and cabinet, and implement well-done access control permission and key management to prevent unauthorized personnel from carrying out physical contacts such as damaging hardware, unauthorized connection of removable equipment (such as USB flash disk, serial port), etc.

2. Change Passwords Regularly

We suggest that you change passwords regularly to reduce the risk of being guessed or cracked.

3. Set and Update Passwords Reset Information Timely

The equipment supports password reset function. Please set up related information for password reset in time, including the end user's mailbox and password protection questions. If the information changes, please modify it in time. When setting password protection questions, it is suggested not to use those that can be easily guessed.

4. Enable Account Lock

The account lock feature is enabled by default, and we recommend you to keep it on to guarantee the account security. If an attacker attempts to log in with the wrong password several times, the corresponding account and the source IP address will be locked.

5. Change Default HTTP and Other Service Ports

We suggest you to change default HTTP and other service ports into any set of numbers between 1024–65535, reducing the risk of outsiders being able to guess which ports you are using.

6. Enable HTTPS

We suggest you to enable HTTPS, so that you visit Web service through a secure communication channel.

7. MAC Address Binding

We recommend you to bind the IP and MAC address of the gateway to the equipment, thus reducing the risk of ARP spoofing.

8. Assign Accounts and Privileges Reasonably

According to business and management requirements, reasonably add users and assign a minimum set of permissions to them.

9. Disable Unnecessary Services and Choose Secure Modes

If not needed, it is recommended to turn off some services such as SNMP, SMTP, UPnP, etc., to reduce risks.

If necessary, it is highly recommended that you use safe modes, including but not limited to the following services:

  • SNMP: Choose SNMP v3, and set up strong encryption passwords and authentication passwords.
  • SMTP: Choose TLS to access mailbox server.
  • FTP: Choose SFTP, and set up strong passwords.
  • AP hotspot: Choose WPA2-PSK encryption mode, and set up strong passwords.

10. Audio and Video Encrypted Transmission

If your audio and video data contents are very important or sensitive, we recommend that you use encrypted transmission function, to reduce the risk of audio and video data being stolen during transmission.

Reminder: encrypted transmission will cause some loss in transmission efficiency.

11. Secure Auditing

  • Check online users: we suggest that you check online users regularly to see if the device is logged in without authorization.
  • Check equipment log: By viewing the logs, you can know the IP addresses that were used to log in to your devices and their key operations.

12. Network Log

Due to the limited storage capacity of the equipment, the stored log is limited. If you need to save the log for a long time, it is recommended that you enable the network log function to ensure that the critical logs are synchronized to the network log server for tracing.

13. Construct a Safe Network Environment

In order to better ensure the safety of equipment and reduce potential cyber risks, we recommend:

  • Disable the port mapping function of the router to avoid direct access to the intranet devices from external network.
  • The network should be partitioned and isolated according to the actual network needs. If there are no communication requirements between two sub networks, it is suggested to use VLAN, network GAP and other technologies to partition the network, so as to achieve the network isolation effect.
  • Establish the 802.1x access authentication system to reduce the risk of unauthorized access to

private networks.

- Enable IP/MAC address filtering function to limit the range of hosts allowed to access the device.

More information

Please visit Dahua official website security emergency response center for security announcements and the latest security recommendations.

ENABLING A SAFER SOCIETY AND SMARTER LIVING

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Product information

Brand : Dahua Technology

Model : IPC-HDBW3841E-AS

Category : Security Camera