CV620-BK4 - Video Conferencing System Marshall Electronics - Free user manual and instructions

Product Type	4K PTZ Video Conferencing Camera
Model	CV620-BK4
Image Sensor	1/2.5-inch CMOS, 8.5 Megapixels
Video Resolution	3840x2160 at 30fps (4K UHD)
Optical Zoom	20x
Field of View	70° (wide end)
Pan/Tilt Range	±170° pan, -30° to +90° tilt
Video Outputs	HDMI 1.4b, 3G-SDI, USB 3.0
Audio Input	Built-in stereo microphone; 3.5mm line-in
Control Interface	RS-232, RS-422, IR remote, VISCA over IP
Dimensions (WxHxD)	240 x 170 x 180 mm (with mounting bracket)
Weight	2.3 kg
Power Supply	DC 12V, 2.5A (included adapter)
Power Consumption	20W (max)
Mounting	Tabletop, tripod, or ceiling mount (hardware included)
Main Functions	4K PTZ camera with auto-framing, preset positions, and remote control
Maintenance & Cleaning	Use a soft, dry cloth; avoid solvents; clean lens with lens tissue
Safety Certifications	CE, FCC, RoHS
Spare Parts & Repairability	Replaceable power supply, IR remote, and mounting bracket; contact Marshall for service
General Information	Designed for professional video conferencing and live streaming

Frequently Asked Questions - CV620-BK4 Marshall Electronics

What video resolutions does the CV620-BK4 support?

The camera supports up to 4K UHD (3840x2160) at 30fps via HDMI and SDI, and 1080p at 60fps via USB 3.0.

Can I control the camera remotely?

Yes, via RS-232, RS-422, IR remote, or VISCA over IP. It supports standard PTZ control protocols.

Is the camera compatible with Zoom, Teams, or other software?

Yes, it works as a USB plug-and-play camera with most conferencing platforms including Zoom, Microsoft Teams, Skype, and Google Meet.

What is the optical zoom range?

It has a 20x optical zoom with a 70° wide-angle field of view.

Does the CV620-BK4 include a microphone?

Yes, it has built-in stereo microphones and a 3.5mm line-in for external audio.

How do I mount the camera?

It can be used on a tabletop, tripod, or ceiling mount. A mounting bracket and screws are included.

What is the maximum pan and tilt range?

Pan: ±170°, Tilt: -30° to +90° for full room coverage.

Does the camera support auto-framing?

Yes, it has auto-framing and preset positions that can be set via the remote or software.

What power supply is needed?

It uses a 12V DC, 2.5A power adapter (included) with a standard 2.1mm jack.

How do I clean the camera lens?

Use a soft, lint-free cloth or lens tissue. Avoid harsh chemicals. For the body, a dry cloth is sufficient.

USER MANUAL CV620-BK4 Marshall Electronics

Two Marshall radar technology devices, one white and one black, displayed against a white background (no visible text or symbols on the devices themselves)

Table of Contents

Safety Instructions....4

Package Contents 6

Product Overview....7

3.1 Overview....7
3.2 Description of LED indicator....7

Instruction for Installation 8

4.1 Preparation before installation....8
4.2 Instruction for installation....8
4.3 Connecting the device....17

Remote Control and Setting Menu 19

5.1 Functions of remote control.... 19
5.2 Setting Menu 20

Descriptions of Major Functions 29

6.1 I would like to switch to CV620-BK2/WH2 29
6.2 I would like to save the current lens position data.... 29
6.3 I would like to clear the saved position data....29
6.4 I would like to turn on the back light compensation function ..... 29
6.5 I would like to adjust the shooting angle of the lens....29
6.6 I would like to hide the preset image switch (Motionless Preset).....29
6.7 I would like to zoom in/out images 30
6.8 I would like to adjust the focal length....30
6.9 I would like to adjust the AF sensitivity....30
6.10 I would like to set the image mode 31
6.11 I would like to freeze images 31
6.12 I would like to rotate the image....31

Marshall

6.13 I would like to change the camera direction 31
6.14 I would like to display the current status....31
6.15 I would like to reset to the original setting 31

DIP Switch Setting....32

7.1 DIP Switch 32
7.2 RS-422 Connection 33

Troubleshooting 35

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Always follow these safety instructions when setting up and using the Camera:

1. Use attachments only as recommended.

2. Use the type of power source indicated on the Camera. If you are not sure of the type of power available, consult your distributor or local electricity company for advice.

3. Always take the following precautions when handling the plug. Failure to do so may result in sparks or fire:

■ Ensure the plug is free of dust before inserting it into a socket.
■ Ensure that the plug is inserted into the socket securely.

1. Do not overload wall sockets, extension leads or multi-way plug boards to avoid potential risks.

2. Do not place the Camera where the cord can be stepped on as this may result in fraying or damage to the lead or the plug.

3. Do not block the slots and openings in the case of this Camera. They provide ventilation and prevent the Camera from overheating. Do not place the Camera on the soft surfaces of sofas, carpets, or other similar surface.

4. Never push objects of any kind through cabinet slots. Never allow liquid of any kind to spill into the Camera.

5. Except as specifically instructed in this User Manual, do not attempt to operate this product by yourself. Opening or removing covers may expose you to dangerous voltages and other hazards. Refer all servicing to licensed service personnel.

6. Unplug the Camera during thunderstorms or if it is not going to be used for an extended period. Do not place the Camera or remote control on top of vibrating equipment or heated objects such as a car, etc.

7. Unplug the Camera from the wall outlet and refer servicing to licensed service personnel when the following situations happen:

■ If the power cable or plug becomes damaged or frayed.
■ If the Camera is wet with liquid, rain, or water.

\*Note

Using an incorrect battery type in the remote control may result in breakdown. Follow local instructions on how to dispose of used batteries

■ Precautions

Warning: To reduce the risk of fire or electric shock, do not expose this camera to rain or moisture.

If Camera will not be used for an extended time, unplug it from the power socket.

		NoteRisk of Electric ShockPlease do not open it by yourself.
Caution: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to licensed service personnel.
	This symbol indicates that this equipment may contain dangerous voltage which could cause electric shock.			This symbol indicates that there are important operating and maintenance instructions in this User Manual with this unit.

■ FCC Warning

This HD camera has been tested and found to comply with the limits for a Class A digital device, pursuant to Article 15-J of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation.

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of Industry Canada.

Operation of this equipment in a residential environment could cause radio interference.

Chapter 2 Package Contents

CV620-BK4/WH4

Instructions for installation

Remote Control

Power Cord Power Adapter RS-422 Connector

Coiled electrical cable with two connectors (no text or symbols visible)

Appearance may vary depending on country/region

Isometric line drawing of a 3-pin electrical connector (no text or symbols)

Metal Plate A Metal Plate B

M3 Screws

Technical line drawing of a mechanical component with mounting holes and internal features (no text or symbols)

Technical line drawing of a mechanical component or housing (no text or symbols)

3.1 Overview

Rear View

1. Camera Lens 2. Power LED Indicator
3. Standby LED Indicator 4.	IR SELECT
5. Power Input 6.	OUTPUT Switch
7. RS-422 Connection	8. 3G-SDI Output
9. RS-232 Output	RS-232 Input
11. HDMI Output

3.2 Description of LED indicator

3.2.1 Power :

3.2.1.1 No Light: Power off
3.2.1.2 Green light: In use
3.2.1.3 Flickering green: Signal from the remote control is received; the indicator flickers every 0.5 seconds

3.2.2 Standby:

3.2.2.1 Orange: In standby mode
3.2.2.2 No Light: Power on

4.1 Preparation before installation

Installation and connection of the Camera requires special skills. To install by yourself, please follow necessary steps, ensure steady and tight installation of the device, and pay attention to your safety to avoid any accident.

4.1.1 Ensure the safety of the installation environment. Please do not install this device on an unstable ceiling or in a place where the device is in danger of falling to avoid any accident.

4.1.2 Please check whether accessories in the box are complete or not. Please contact the supplier for any shortage, and make sure to keep the accessories in the box intact.

4.1.3 Please choose a proper place for installation of the Camera in advance. Please determine an installation place according to the following requirements:

4.1.1.1 Confirm the position for the object to be captured.

4.1.1.2 Confirm whether the Camera is set at a proper distance from other light sources.

4.2 Instructions for installation

4.2.1 I would like to install CV620-BK4/WH4 on a desk

4.2.1.1 Precautions for installation

◆ Please install the machine on a flat desk
◆ Do not grab the camera head by hand when handling the device
Do not rotate the camera head by hand. Improper rotation may result in breakdown of the camera

Four hand-drawn diagrams showing a device being handled, with no text or symbols present.

4.2.1.2 Installation steps

1. Please adjust DIP switch at first prior to installation

*Please refer to Chapter 7 DIP Switch Setting for the relevant descriptions on DIP switch.

1. Place the camera on a flat desk directly to ensure the normal vertical and horizontal operation of the machine

Illustration of a laptop and a mechanical device on a workbench (no text or symbols)

4.2.2 I would like to install CV620-BK4/WH4 on the ceiling

4.2.2.1 Prepare for the parts and equipment required during the installation

1. Accessories of CV620-BK4/WH4 in the box (metal plates A,B, M3 screw silver x 8, black x 2)
2. Screw for locking on ceiling mounted hanger x 4
3. Drilling machine, screw driver, ladder

4.2.2.2 Camera Size

Length x Width x Height: 174 x 186.2 x 185.5 mm

Weight : 2.0 Kg

4.2.2.3 Max. rotation dimension of camera

4.2.2.4 Size Diagram

1. Metal plate A - machine side

Metal plate A locking screw

1. Metal plate B - ceiling side

Metal plate B locking screw

Metal plate B locking bolt

1. Bottom of camera
   

4.2.2.5 Precautions for installation

1. Before installation, please confirm the orientation of the machine relative to the object to be captured.

2. It is recommended that the machine should be set at a distance of more than 1 meter away from the object to be captured. Please adjust for a best distance according to the magnification of the lens.

1. The machine (including metal plates) is weighed at about 2.5 ~kg . If it is to be installed on the ceiling, please use the hanger that has obtained UL security approval to prevent the machine from falling down.

2. Please check whether the camera is installed securely on a regular basis.

4.2.2.6 Installation steps

1. Please adjust resolution on DIP switch at first

*Please refer to Chapter 7 DIP Switch Setting for the relevant descriptions on DIP switch.

1. Fix the metal plate A on the machine base with 4 M3 silver screws

2. Lock the metal plate B on ceiling mounted hanger

※Caution:

(1) Please use the hanger that has obtained UL security approval
(2) Please reserve the hole for the connecting wires of the camera

1. Combine the metal plate A and the metal plate B

(1) Push the metal plate A up to the ceiling and then to the right to latch the metal plate B
(2) And then secure with 2 M3 silver screws and 1 M3 black screw

black screw

4.2.2.7 How to remove

1. Remove the connecting wires from the camera
2. Uninstall the camera together with the ceiling, loosen the three screws that fix the metal plates A and B and push to the left to remove the machine

Technical line drawing of a mechanical device with a flat plate and cylindrical housing (no text or symbols)

1. Remove the screws on the hanger and the machine

4.3 Connecting the device

4.3.1 Image Output

4.3.1.1 Connecting to a HDTV / computer monitor (DVI)

4.3.1.2 Connecting to an HDTV (3G-SDI)

4.3.2 Controlling CV620-BK4/WH4s with the computer

4.3.2.1 Connecting to one computer for connection between CV620-BK4/WH4s (RS-232 in/out)

graph TD
    A["Computer"] --> B["RS-232 IN Camera"]
    A --> C["RS-232 OUT Camera"]
    A --> D["RS-232 IN Camera"]
    A --> E["RS-232 OUT Camera"]
    A --> F["RS-232 IN Camera"]

With RS-232 in/out, at most 7 CVs can be connected.

4.3.2.2 Connecting to one computer for connection between CV620-BK4/WH4s (RS-422)

graph TD
    A["Computer monitor"] --> B["RS-422 Camera"]
    B --> C["RS-422 Camera"]
    C --> D["Channel with curved arrow"]
    D --> E["RS-422 Camera"]
    E --> F["RS-422 Camera"]

*Please refer to 7.2 RS-422 connection for the RS-422 connection instructions.

*With RS-422, at most 7 CVs can be connected.

Chapter 5 Remote Control and Setting Menu

5.1 Functions of remote control

* The below functions are listed alphabetically.

	Item Description
	<,>,^,▼	Move the lens
	Back Light	Turn on/off back light compensation
	Camera select	Select 1 ~ 3 CV620-BK4/WH4
	Focus-Manual / Far/Near	Turn on manual focus to adjust the focal length
	Focus-Auto Auto Focus
	Freeze Freeze the screen
	Home-Enter Go back to the main page / Execute
	Info Status information
	L/R Direction Set	L/R Direction / Normal
	Menu Display OSD menu
	Mirror	Rotate the image (OFF / Mirror / Flip / Rotate)
	Pan/Tilt Reset	Clear the Pan / Tilt setting
	Picture	Switch image effect (OFF / Neg / B&W)
	Power Power Switch
	Preset	Appoint an ID (0 ~ 9) to save the current position data
	Reset	Appoint an ID (0 ~ 9) to delete the current position data
	Zoom-Fast Adjust image size
	Zoom-Slow	Fine-tune image size

5.2 Setting Menu

*Press [Menu] on the remote control to enter the setting menu; the bold underlined values in the following table are defaults.

1st Level Major Items	2nd Level Minor Items	3rd Level Adjustment Values		Function Descriptions
Exposure	Mode	1.Full Auto2.Shutter Pri3.Iris Pri4.Manual5.White Board		Exposure mode setting
	Exposure Comp.	On /Off		AE Level
	Exposure Comp.Level	-6~C~4		The value can be adjusted only after Exposure Comp. is activated
	Spot Light On	/Off _		The value can be adjusted when the mode is set to Full Auto or Shutter Pri
	Spot Light Position	X(0~8)Y(0~6)		The value can be adjusted only after Spot Light is activated
	Shutter Priority	60/30 mode	50/25 mode	Shutter priority setting
		1/10000 1/10000
		1/5000	1/5000
		1/3000 1/3000
		1/2500	1/2500
		1/2000 1/1750
		1/1500	1/1250
		1/1000 1/1000
		1/725	1/600
		1/500 1/425
		1/350	1/300
		1/250 1/215
		1/180	1/150
		1/120	1/120
		1/100 1/100
		1/90	1/75
		1/60	1/50
		1/30	1/25
		1/15 1/12
		1/8	1/6
		1/4 1/3
		1/2	1/2
		1/1 1/1
	Iris Priority	1. F1.62. F23. F2.24. F2.75. F3.26. F3.87. F4.58. F5.49. F6.310. F7.811. F912. F1113. F1314. F1615. F18		Iris priority setting
	Manual Gain	1. 0dB2. 2 dB3. 4 dB4. 6 dB5. 8 dB6. 10 dB7. 12 dB8. 14 dB9. 16 dB10. 18 dB11. 20 dB12. 22 dB13. 24 dB14. 26 dB15. 28 dB16. 30 dB		Manually set the gain
	Manual Speed	60/30 mode	50/25 mode	Manually set the shutter
		1/10000	1/10000
		1/5000	1/5000
		1/3000	1/3000
		1/2500 1/2500
		1/2000	1/1750
		1/1500 1/1250
		1/1000	1/1000
		1/725 1/600
		1/500	1/425
		1/350 1/300
		1/250	1/215
		1/180 1/150
		1/120	1/120
		1/100	1/100
		1/90	1/75
		1/60	1/50
		1/30 1/25
		1/15	1/12
		1/8 1/6
		1/4	1/3
		1/2 1/2
		1/1	1/1
	Manual Iris	1. F1.62. F23. F2.24. F2.75. F3.26. F3.87. F4.58. F5.49. F6.310. F7.811. F912. F1113. F1314. F1615. F18		Manually set the iris
	Gain Limit	1. 8 dB2. 10 dB3. 12 dB4. 14 dB5. 16 dB6. 18 dB7. 20 dB8. 22 dB9. 24 dB10. 26 dB11. 28 dB12. 30dB		The maximum electric gain limit.
	Iris Limit	1. F1.62. F2.23. F3.24. F4.55. F6.36. F97. F138. F18	Max. limit value of iris
	WDR	1. Off2. 13. 24. 35. 46. 5	Set WDR
	Anti Flicker	1. 50Hz2. 60Hz1. Off	Set the image sync frequency during capturing
White Balance	Mode	1. Auto2. Indoor3. Outdoor4. One Push WB5. ATW6. Sodium Lamp7. Manual8. 3000K9. 4300K10. 5000K11. 6500K12. 8300K13. WideAuto	Select the color temperature mode1. 4000k ~ 7000k2. 3200k3. 5800k4. 1700k ~ 10000k5. 1700k ~ 10000k6. 2800k7. Custom8. 3000K9. 4300K10. 5000K11. 6500K12. 8000K13. 3000k ~ 7000k
	One Push Trigger	ENTER One push trigger
	Manual Red	0~C~60	Adjustable when the white balance mode is set to Manual
	Manual Blue	0~C~60	Adjustable when the white balance mode is set to Manual
Picture	Picture effect	1. Off2. Neg3. B & W	Set the picture effect
	Sharpness	1~A~16	Adjust the sharpness of the image
	2D NR	1. Auto2. Off3. 14. 25. 36. 47. 5	Set 2D noise reduction
	3D NR	1. Off2. LOW3. Typ4. Max5. Auto	Set 3D dynamic noise reduction
	Image Mode	1. Mode12. Mode23. Mode34. Mode45. Mode56. Mode67. Custom	The user may customize his/her desired image mode
	Image Mode Load	1. Mode12. Mode23. Mode34. Mode45. Mode56. Mode6	Adjustable when the Image mode is set to Custom. After selected, the corresponding Image mode parameters will be read and applied to Custom
	Saturation	0~A~25	Adjustable when the Image mode is set to Custom mode
	Hue	0~A~14	Adjustable when the Image mode is set to Custom mode
	Gamma	0~A~3	Adjustable when theImage modeis set toCustom mode
	Skin Tone	1~A~5	Skin tone settings;adjustable whenImage modeis set toCustom mode
	Brightness	0~A~14	Adjustable when theImage modeis set toCustom
	Contrast	0~A~14	Contrast adjustment;Adjustable when theImage modeis set toCustom
	Black Level	1. Off2. Type 13. Type 24. Type 3	Adjust the shadow details and transparency of the screen, adjustable when theImage modeis set toCustom
Pan Tilt Zoom	Pan/Tilt Limit On / Off		Turn on/off the angle limit setting
	Pan Right Limit	0~170Limit the right angle
	Pan Left Limit	-170~0 Limit the left angle
	Tilt UP Limit	0~90	Limit the upward angle
	Tilt Down Limit	-30~0	Limit the downward angle
	Pan Flip On / Off	—	When turned on, Pan command will be reversed
	Tilt Flip On / Off	—	When turned on, Tilt command will be reversed
	Pan/Tilt Speed	Normal/Smooth	Adjust Pan/Tilt Speed
	Preset Speed	1. 5 deg/sec2. 25 deg/sec3. 50 deg/sec4. 80 deg/sec5. 120 deg/sec6. 160 deg/sec7. 200 deg/sec8. 300 deg/sec	Set the rotation speed of the cradle head when Preset is executed
	PTZ Speed Comp	On / Off	Set the Pan/Tilt Moving speed subject to the zoom position
	D-Zoom Limit	x1~x12	Limit the D-zoom multiple
D-Effect	Mirror	1. Off2. Mirror3. Flip4. Mirror + Flip	Set the mode at which the image is turned
Auto Focus	AF Sensitivity	1. LOW2. Middle3. High	Select the AF triggering speed. The higher the speed is, the faster AF is triggered
	AF Frame	Full Frame/ Center	AF frame setting, when central area was set as AF frame, focusing will be on the center of the screen. When Full Frame was set as AF frame, focusing will be calculated based on the full screen
System	Video Type	SDI	Select video output type
		DVI-I
	Prompt	On / Off	Turn on/off the prompt information on the display
	IR Receive	On / Off	Turn on/off the infrared reception
	Language	English / Chinese	Language
	Control Device	Encoder / Controller	Control Device setting,Controller: for joystickEncoder: for tracking system
	Motionless Preset	On / Off	When the function is enabled, the screen will Freeze when Preset is executed. Freeze will be released after Preset is completed.
	Protocol	Protocol V / Protocol PD	Protocol V: VISCAProtocol PD: PELCO D
	PD Address	1~C~255	The Protocol set to PD allows the camera ID address to be assigned
	Camera Address	0~7
	Output Mode	1. 1920x1080/60p2. 1920x1080/50p3. 1920x1080/30p4. 1920x1080/25p5. 1920x1080/60i6. 1920x1080/50i7. 1280x720/60p8. 1280x720/50p9. 1280x720/30p10. 1280x720/25p11. 1080/59.94p12. 1080/59.94i13. 1080/29.97p14. 720/59.94p15. 720/29.97p	Choose the output resolution
	Control Protocol	RS-232C/RS-422	Choose whether the control interface used is RS-232C or RS-422
	Baud Rate	9600/38400	Choose the transmission speed of the control signal
	Factory Reset	On / Off	Resume the factory default setting
Status			Display the current setting status

6.1 I would like to switch to CV620-BK4/WH4

1. Press [Camera 1 \~ 3] on the remote control to select CV620-BK4/WH4.

● Camera 1 \~ 3 is selected with IR SELECT.

6.2 I would like to save the current lens position data

1. Hold [Preset + ID] on the remote control to save the current position data.

- ID shall be a digit [0 \~ 9].

- Use VISCA Command to save the position data to [0 \~ 127].

6.3 I would like to clear the saved position data

1. Hold [Reset + ID] on the remote control to clear the given position data.

- ID shall be a digit [0 \~ 9].

- Use VISCA Command to clear the position data stored of [0 \~ 127].

6.4 I would like to turn on the back light compensation function

1. Press [Back Light] on the remote control to turn on or turn off the back light compensation

6.5 I would like to adjust the shooting angle of the lens

1. Press [Tilt ▲] or [Tilt ▼] on the remote control to adjust the angle upward or downward.

2. Press [Pan ▶] or [Pan ◀] on the remote control to adjust the angle to the right or left.

3. Press [Pan - Tilt Reset] on the remote control to reset the angle to the center point.

6.6 I would like to hide the preset image switch (Motionless Preset)

1. Press [MENU] to activate the setting menu.

2. Press [▶] or [◀] to select [System].

3. Press [ENTER] to activate.
4. Press [▲] or [▼] to select [Motionless Preset].
5. Press [ENTER] to activate.
6. Press [▶] or [◀] to select [Off / On].
7. Press [MENU] to exit.

6.7 I would like to zoom in/out images

6.7.1 Adjust image size

1. Press [Fast +] on the remote control to zoom in images.
2. Press [Fast -] on the remote control to zoom out images.

6.7.2 Fine-tune image size

1. Press [Slow +] on the remote control to zoom in images.
2. Press [Slow -] on the remote control to zoom out images.

6.8 I would like to adjust the focal length

6.8.1 Auto tune

1. Press [AF] on the remote control to adjust automatically.

6.8.2 Manual focus

1. Press [MF] on the remote control to turn on the manual focus function.
2. Press Focus - [+] or Focus - [-] to adjust.

6.9 I would like to adjust the AF sensitivity

Triggering speed of focus. The higher the speed is, the faster focus is triggered.

To shoot fast-moving objects, AF Sensitivity can be set to [High] or [Medium], which is applicable to quick focus.

When the environment is too dark to enable auto focus or fixed objects have to be shot in different brightness, AF Sensitivity can be set to [Low].

1. Press [MENU] to activate the setting menu.
2. Press [▶] or [◀] to select [Auto Focus].
3. Press [ENTER] to activate.
4. Press [▲] or [▼] to select [AF Sensitivity].

5. Press [ENTER] to activate.

6. Press [▶] or [◀] to select [High / Middle / Low].

7. Press [MENU] to exit.

6.10 I would like to set the image mode

1. Press [Picture] on the remote control to switch [Off / Neg / B&W].

6.11 I would like to freeze images

1. Press [Freeze] on the remote control to freeze the current image on the display.

6.12 I would like to rotate the image

1. Press [Mirror] on the remote control to switch [Off / Mirror / Flip / Mirror + Flip].

6.13 I would like to change the camera direction

1. Press [L/R Direction Set] on the remote control to switch [L/R Direction / Off / Normal].

6.14 I would like to display the current status

1. Press [Info] on the remote control to display the current status information.

6.15 I would like to reset to the original setting

1. Press [MENU] to activate the setting menu.
2. Press [▶] or [◀] to select [System].
3. Press [ENTER] to activate.
4. Press [▲] or [▼] to select [Factory Reset].
5. Press [ENTER] to activate.
6. Press [▶] or [◀] to select [On].
7. Press [ENTER] to execute.

* Please turn off the machine before changing DIP switch setting. 7.1 DIP Switch

7.1.1 OUTPUT Switch

Setting	Function Descriptions
0	1920x1080/60p
1	1920x1080/50p
2	1920x1080/30p
3	1920x1080/25p
4	1920x1080/60i
5	1920x1080/50i
6	1280x720/60p
7	1280x720/50p
8	1280x720/30p
9	1280x720/25p
A	1080/59.94p
B	1080/59.94i
C	1080/29.97p
D	720/59.94p
E	720/29.97p
F	Reserved

7.1.2 IR SELECT

ID	Setting
1
2
3

7.2 RS-422 Connection

7.2.1 RS-422 Pin Description

RS-422

Pin NO.	Function
1	RXD OUT -
2	RXD OUT +
3	TXD OUT -
4	TXD OUT +
5	GND
6	RXD IN -
7	RXD IN +
8	TXD IN -
9	TXD IN +

*For SONY products, please connect IN+ to OUT+

For non-SONY products, it may be necessary to connect IN+ to OUT-

7.2.2 Use RS-422 Connection

1. Hold the two sides of RS-422 connector and pull out in the direction shown by the arrow in the figure below

1. Peel off a section of copper wire (AWG Nos. 28 to 18) and insert it into the connector hole; then use a flat head screw driver to fix it

Diagram of a connector pinout with a circular arrow indicating rotation (no text or symbols)

1. Insert the wired RS-422 connector back to the camera. Now the connection is completed

* When RS-422 connection is being used, do not use RS-232C connection.

This chapter describes problems you may encounter while using the CV620-BK4/WH4. If you have questions, please refer to related chapters and follow all suggested solutions. If the problem still occurs, please contact your distributor or service center.

No.	Problems	Solutions
1.	Boot without power signal	Make sure you have plugged in the power cord.
2.	There is no image output from CV620-BK4/WH4	1. Check the power.2. Check if DIP switch is properly set. Refer to Chapter 7 DIP switch setting for related settings.3. Make sure the display supports the output resolution; in general, the resolution is 1080p60/1080i60/720p60.4. Replace the cables and make sure they are not faulty.
3.	CV620-BK4/WH4 image is severely delayed	Please use 1080p or 720p 60/50 Hz signals rather than 25/30 Hz signals.
4.	Not working after changes to DIP Switch setting	After completing DIP Switch setting, unplug and reconnect the power cord and turn on the machine to change the setting.
5.	CV620-BK4/WH4 cannot be operated by remote control	1. Please confirm if the Camera Select on the remote control can be used together with the IR Select on the Camera.2. Please prevent Camera from direct sunshine.3. Make sure the energy-saving bulb and the IR touchscreen are as far away from each other? as possible in order to avoid interference.4. When several CV620-BK4/WH4s are connected in the same area, the operation of two remote controls at the same time may result in signal interference. It is recommended to use only one remote control.
6. The device cannot be controlled with Codec		1. Please consult the distributor to make sure the firmware version is the latest one. The steps to check version is as follows:1.1 Press [MENU] on the remote control1.2 Choose [Status]1.3 Go to Page 5 of [System]1.4 Make sure the firmware version is correct.2. Make sure the connection is correct (RS-232/422 Input).3. Please confirm OSD menu [System]/[Control Protocol] setting.
7. The device cannot be controlled with RS-232/RS-422		1. Make sure the connection is correct (RS-232/422 Input).2. Please confirm OSD menu [System]/[Control Protocol] setting.

Warranty

Marshall Electronics warranties to the first consumer that this device will, under normal use, be free from defects in workmanship and materials, when received in its original container, for a period of three years from the purchase date. This warranty is extended to the first consumer only, and proof of purchase is necessary to honor the warranty. If there is no proof of purchase provided with a warranty claim, Marshall Electronics reserves the right not to honor the warranty set forth above. Therefore, labor and parts may be charged to the consumer. This warranty does not apply to the product exterior or cosmetics. Misuse, abnormal handling, alterations or modifications in design or construction void this warranty. No sales personnel of the seller or any other person is authorized to make any warranties other than those described above, or to extend the duration of any warranties on behalf of Marshall Electronics, beyond the time period described above.

Due to constant effort to improve products and product features, specifications may change without notice.

Marshall

20608 Madrona Avenue, Torrance, CA 90503

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www.marshall-usa.com

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