AVSC-0401H - Video switch Black Box - Free user manual and instructions

Product Type	4x1 HDMI Switcher
Input Ports	4 x HDMI (Type A female)
Output Ports	1 x HDMI (Type A female)
Supported Resolutions	480p, 720p, 1080p, 4K@30Hz
Video Bandwidth	10.2 Gbps
HDCP Support	HDCP 1.4
Audio Support	LPCM 7.1, Dolby TrueHD, DTS-HD Master Audio
Switching Control	Manual push-button, IR remote
Dimensions (W x D x H)	4.5 x 2.5 x 1.0 inches (114 x 64 x 25 mm)
Weight	0.5 lb (227 g)
Power Supply	5V DC, 1A (micro-USB)
Power Consumption	2.5 W (max)
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-4°F to 140°F (-20°C to 60°C)
Color	Black
Mounting Options	Desktop, optional rack mount bracket
Regulatory Approvals	CE, FCC
Warranty	Limited 3-year warranty
Accessories Included	Power adapter, IR remote, user manual

Frequently Asked Questions - AVSC-0401H Black Box

What is the AVSC-0401H?

The AVSC-0401H is a 4x1 HDMI switcher from Black Box that allows you to connect up to four HDMI sources to one display.

Does it support 4K resolution?

Yes, it supports resolutions up to 4K@30Hz. For 4K@60Hz, consider the AVSC-0401H-U model.

How do I switch between inputs?

You can switch using the front-panel push button or the included IR remote control.

Does the switcher require external power?

Yes, it requires a 5V DC power adapter (included) connected via micro-USB.

Is HDCP supported?

Yes, it supports HDCP 1.4. It is not compatible with HDCP 2.2 sources.

Can I use it with a soundbar or AV receiver?

Yes, it passes through audio formats like LPCM, Dolby TrueHD, and DTS-HD Master Audio to your audio device.

What cables are recommended?

Use High Speed HDMI cables (with Ethernet) for reliable 4K transmission. Avoid cables longer than 15 feet.

Does it support auto-switching?

No, the AVSC-0401H does not have auto-switching. Input selection must be done manually.

What is the warranty period?

Black Box offers a limited 3-year warranty against defects in materials and workmanship.

Where can I download the user manual?

The manual is available for free download at notice-facile.com in multiple languages.

USER MANUAL AVSC-0401H Black Box

Presentation Switcher - HDBaseT, 4 x 1

User Manual

Trademarks Used in this Manual

Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

Disclaimer

Black Box Network Services shall not be liable for damages of any kind, including, but not limited to, punitive, consequential or cost of cover damages, resulting from any errors in the product information or specifications set forth in this document and Black Box Network Services may revise this document at any time without notice.

FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of Industry Canada.

1. Do not expose this apparatus to rain, moisture, dripping or splashing water and do not place objects filled with liquids, such as vases, on the apparatus.
2. Do not install or place this unit in a bookcase, built-in cabinet or in another confined space. Make sure the unit is well ventilated.
3. To prevent risk of electric shock or fire hazard caused by overheating, do not obstruct the unit's ventilation openings with newspapers, tablecloths, curtains, and similar items.
4. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
5. Do not place sources of flames, such as lighted candles, on the unit.
6. Clean this apparatus only with a dry cloth.
7. Unplug this apparatus during lightning storms or when unused for long periods of time.
8. Protect the power cord from being walked on or pinched particularly at plugs.
9. Only use attachments/accessories specified by the manufacturer.
10. Refer all servicing to qualified service personnel.

Table of Contents

1. Specifications 8
2. Overview....10

2.1 Introduction....10
2.2 Features 10
2.3 What's Included....11
2.4 Hardware Description 12
2.5 Typical Application....14

1. RS-232 Connection 15

3.1 API Commands....15
3.2 Auto Mode....18

1. Set and Scaler 19

4.1 Set 19

4.2 Scaler 20

1. Specifications

Video
Input Connectors (2) HDMI	(1) DisplayPort,(1) VGA IN,(1) Stereo audio (embedded with VGA inputs)
Input Signal Type HDMI	1.4
Input Resolution Support	VESA:640 x 480 @ 60 Hz, 800 x 600 @ 60 Hz,1024 x 768 @ 60 Hz, 1280 x 768 @ 60Hz,1280 x 800 @ 60Hz, 1280 x 960 @ 60Hz,1280 x 1024 @ 60 Hz, 1360 x 768 @ 60 Hz,1366 x 768 @ 60 Hz, 1440 x 900 @ 60 Hz,1600 x 900 @ 60 Hz, 1600 x 1200 @ 60 Hz,1680 x 1050 @ 60 Hz, 1920 x 1200 @ 60 Hz,1920 x 1200 @ 60 Hz;SMPTE:720 x 480 @ 60 Hz, 720 x 576 @ 50 Hz,1280 x 720 @ 50/60 Hz,1920 x 1080 @ 50/60 Hz,3840 x 2160 @ 30 Hz;NOTE: Supports HDMI/DP input up to 4K @ 30 Hz;VGA input up to 1920 x 1200 @ 60 Hz.
Input Video Level 0.5-1.2 V p-p
Output Signal Type HDMI 1.4, HDBaseT
Output Resolution Support	VESA:640 x 480 @ 60 Hz, 800 x 600 @ 60 Hz,1024 x 768 @ 60 Hz, 1280 x 768 @ 60Hz,1280 x 800 @ 60Hz, 1280 x 960 @ 60Hz,1260 x 1024 @ 60 Hz, 1360 x 768 @ 60 Hz,1366 x 768 @ 60 Hz, 1440 x 900 @ 60 Hz,1600 x 900 @ 60 Hz, 1600 x 1200 @ 60 Hz,1680 x 1200 @ 60 Hz,1920 x 1200 @ 60 Hz,1920 x 1200 @ 60 Hz;SMPTE:720 x 480 @ 60 Hz, 720 x 576 @ 50 Hz,1280 x 720 @ 50/60 Hz,1920 x 1080 @ 50/6O Hz,3840 x 2160 @ 30 Hz
Video (continued)
Video Impedance 100 ohms
Deep Color 1080p: 48-bit, 4K: 24-bit
Audio
Input Stereo audio (embedded with VGA inputs)
Output (1) balanced stereo audio output: 5-pin Phoenix connector
Format HDMI OUT: PCM 2.0 and Dolby 5.1; HDBaseT OUT: Multichannel digital audio supporting up to 7.1 DTS Master HD and Dolby True HD; AUDIO OUT: PCM2.0
Control
Control Method RS-232, front-panel Buttons, contact closures
Electrical/Power
ESD Protection Human-body Model: ±8 kV (Air-gap discharge)/±4 kV (Contact discharge)
Surge Protection Voltage: ±1 kV (Ten times respectively for the positive and negative voltage)
Electrical Fast Transient/Burst	Data communication cord: 1 kV; Power cord : 2 kV
Power Supply 12 VDC, 3A
Power Consumption (Maximum)	22 W
Environmental
Operating Temperature	32 to 113°F (0 to 45°C)
Storage Temperature -4°F	to +158°F (-20 to +70°C)
Humidity	10% to 90%, non-condensing
Mechanical
Dimensions 0.83"H x 8.66"W x 6.46"D (2.1 x 16.42 x 22 cm)
Weight	1.8 lb. (0.82 kg)
Rack Space Required 1/2	U height
Approvals	CE, FCC

2. Overview

2.1 Introduction

The Presentation Switcher - HDBaseT, 4 x 1 is an advanced four-input, multi-format converter, switcher, scaler, and extender with built-in 4K scaling, in a compact 1U half-rack enclosure. It offers two HDMI inputs, one DP input, one VGA input with stereo audio, an HDMI with HDBaseT mirrored output to allow signal extension over CATx cable to reach a remote display, or an additional HDBaseT signal management system. One balanced stereo audio breaks out from HDMI output.

NOTE: Scaling is only supported on HDMI output. For scaling on HDBaseT output, please use with VX-1003-TX scaling receiver.

The Switcher supports auto switching and has a built-in 4K @ 30 Hz scaler in HDMI output, with rotary switch scaler adjustment, and allows seamless switching to enhance presentations. Its built-in CEC controller automatically turns the display on/standby by auto-detecting the input signal status. You can also control the Switcher via pushbuttons on the front panel, contact closures, and RS-232 API.

The Switcher simplifies classroom and small office system integration, for installation beneath conference tables and in lecterns, to provide localized presentation switching support.

2.2 Features

• Has (1) VGA + Stereo, (1) DP, and (2) HDMI inputs, and (1) HDMI and (1) HDBaseT mirrored outputs.
• Supports HDMI and DP input up to 4K @ 30 Hz and HDCP 1.4, and VGA input up to 1920 x 1200 @ 60 Hz.
• Provides HDMI out with a 4K @ 30 Hz scaler built-in and de-embedded balanced stereo audio out.
• Mirrors out HDBaseT, and supports PoH with PSE module to power the remote HDBaseT receiver.
• HDMI out supports seamless and fast switching within 2–3 seconds, and the last frame is frozen.

• Switches automatically to the latest input when it detects that any input is connected or disconnected.

• A CEC controller is built-in to turn the display on/off by auto-detecting inputs status, with delay adjustment.

• Pushbuttons and contact closures enable you to switch sources or turn the display on/standby manually.
• DIP switch provided to adjust automatic or manual operation mode.
• Rotary switch provided to adjust auto-scaler or fixed resolutions out.
• Control the device via RS-232 and front panel buttons.
• Includes complete API commands for the third-party control system for integration.
• A 12-VDC, 3-A universal power supply powers the switcher.
• 1/2 rack unit high.

2.3 What's Included

Your package should contain the following items. If anything is missing or damaged, contact Black Box Technical Support at 724-746-5500 or [e-mail].

• Presentation Switcher - HDBaseT, 4 x 1 (AVSC-0401H)
  • (1) 12-DC, 3-A power adapter.
  • (3) Phoenix male connector (3.5 mm, 3 pins)
  • (3) Phoenix Male Connector (3.5 mm, 5 pins)
  • (1) pair of mounting brackets
• This user manual

2.4 Hardware Description

Figures 2-1 and 2-2 show the front and back panels of the switcher. Tables 2-1 and 2-2 describe their components.

Figure 2-1. Front panel.

Table 2-1. Front-panel components.

Number in Figure 2-1	Name Description
1 VGA IN Connects to VGA source device.
2 Audio IN Stereo audio (embedded with VGA inputs).
3 DisplayPort IN Connects to DisplayPort source device.
4 HDMI IN Connects to HDMI source device.
5 Source Selection LEDs		LED: Lights on if the corresponding source is selected.
6 Source Selection Button		Selection button: press the button to select source 1 to 4 as input in turn.
7 Sink Selection Button		On: Turn on the TV by CEC.Off: Turn off the TV by CEC.NOTE: Used for TV that supports CEC
8	4-Pin DIP switch	Pin 1: Audio De-embedded;Pin 2: Source Switch;Pin 3: CEC Control Mode;Pin 4: Control Mode
9 Scaler Toggles the switch to manage the output scaler.

Figure 2-2. Back panel.

Table 2-2. Back panel components.

Number in Figure 2-2	Component Description
1 Ethernet port	Used for Ethernet	passthrough to an HDBaseT receiver.
2 RS-232	passthrough	Connects to an RS-232 controller or RS-232 controllable device to pass through an RS-232 command.
3 HDBaseT OUT port		Connects to an HDBaseT receiver.
4 HDMI OUT	port Connects to an	HDMI display device.
5 AUDIO OUT	Ports Connects to an	an audio output device such as an amplifier, a speaker ,or an earphone for HDMI audio de-embedding output.
6 Contact IN ports	Connects to a keypad for input source switching.
7 Tally OUT ports	Connects to LEDs on the keypad to indicate the selected source.
8 Sink ports	Connects to keypad to control the display device power ON/OFF.
9	RS-232 control	Connects to a PC or a third-party control system to control this device via API commands.
10	Power input	Connect to a 12 VDC, 3-A power supply.

2.5 Typical Application

graph TD
    A["Laptop"] --> B["VGA IN"]
    C["HPDA"] --> D["DP IN"]
    E["LaptopLap"] --> F["HDMI IN"]
    G["Keypad"] --> H["DC 12V"]
    I["HDBaseT"] --> J["HDBIN"]
    K["HDMI OUT"] --> L["CONTACT IN"]
    M["TCALL OUT"] --> N["SINK"]
    O["RS232"] --> P["Amplifier in ceiling speaker"]
    Q["Display"] --> R["Projector"]
    S["HDMI OUT"] --> T["CEC Control"]
    U["Ethernet switch"] --> V["PCB"]
    W["Source"] --> X["ON"]
    Y["SINK"] --> Z["OFF"]
    AA["SET"] --> AB["SCALER"]
    AC["Control"] --> AD["Data Bus"]

Figure 2-3. System Diagram.

3. RS-232 Connection

1. Connect the matrix to a PC via a UART-to-USB cable.
2. Run the UART tool on the PC, and configure the serial port as described in the following table.

Table 3-1. Serial port settings.

Serial Parameter Setting
Baud rate 57600 bps
Data bits 8 bits
Parity bits None
Stop bits 1 bit
Flow Control None

NOTE: The data format is ASCII.

3.1 API Commands

IDX	Function	Command	Response	Parameters Desription	Example
1 Set	API command ON/OFF	SET API_ONOFF prm[CR/LF]	API Mode: prm[CR/LF]	prm = {on,off} Command: SET API_ONOFF on [CR/LF]Response: API Mode: on [CR/LF]
2 Get	API Status GET API_STATUS[CR/LF]	STATUS[CR/LF]	API Mode: prm[CR/LF]	prm = {on,off} Command: GET API_STATUS[CR/LF]Response: API Mode: on [CR/LF]
3 Set	Auto Switch on/off	SET AUTOSW_ONOFF prm [CR/LF]	Auto Switch: prm [CR/LF]	prm = {on,off} Command: SET AUTOSW_ONOFF on [CR/LF]Response: Auto Switch: on [CR/LF]
4 Set	Auto Switch Mode	SET AUTOSW_MODE prm [CR/LF]	Auto Switch: prm [CR/LF]	prm = {on,off} Command: SET AUTOSW_ONOFF on [CR/LF]Response: Auto Switch: on [CR/LF]
5 Switch	to Next Source	SET SW_NEXT[CR/LF]	Source Select: prm[CR/LF]	prm = {vga,dp,hdmi1,hdmi2}	Command: SET SW_NEXT[CR/LF]Return: Source Select: DP[CR/LF]
6 Switch	Input for Output	SET SW prm[CR/LF]	Source Select: prm[CR/LF]	SW is short for Swtichprm= {vga,dp,hdmi1,hdmi2}	Command: SET SW dp[CR/LF]Response: Source Select: dp[CR/LF]
7 Get	Channel Switch State	GET SW_STATUS[CR/LF]	Source Select: prm1[CR/LF]Switch Mode: prm2[CR/LF]	prm1 = {vga,dp,hdmi1,hdmi2}prm2={Manual Mode,Automatic(Last Connected)Mode, Automatic(priority) Mode}	Command: GET SW_STATUS[CR/LF]Response: Source Select: dp[CR/LF]Switch Mode: Manual Mode[CR/LF]Description: prm1 = {vga,dp,hdmi1,hdmi2}prm2={Manual Mode,Automatic(Last Connected) Mode,Automatic(priority) Mode}
8 Set	CEC functio SET	CECCMD_ONOFF prm[CR/LF]	CEC: prm[CR/LF]	prm = {on, off}	Command: SET CECCMD_ONOFF on[CR/LF]Response: CEC: on[CR/LF]
9 Set	CEC AUTO POWER ON/OFF	SET CECAUTO_ONOFF prm[CR/LF]	Auto CEC: prm[CR/LF]	prm = {on, off} Command: SET CECAUTO_ONOFF on[CR/LF]Response: Auto CEC: on[CR/LF]	AUTO_ONOFF on[CR/LF]Response: Auto CEC: on[CR/LF]
10 Set	CEC POWER Delay Time	SET CECAUTO_DELAY prm[CR/LF]	Auto CEC Delay Value: prm Min[CR/LF]	CECAUTO_DELAY is short for CEC auto Power Delay Timingprm = {0,1,2,3...}// according to the actual time counter, 1 means 1 minute, 2 means 2 minutesDefault wait time is 2 minutes off means when no active signal, the unit will not auto power off.0 means when no active signal, the unit auto power off immediately.	Command: SET CECAUTO_DELAY 3[CR/LF]Response: CECAUTO_DELAY 3 Min[CR/LF]
11 Set	CEC POWER ON/OFF	SET CECPWR_ONOFF prm[CR/LF]	Send CEC cmd:HDMI TV prm[CR/LF]Send CEC cmd:HDBaseT TVprm[CR/LF]	CECPWR_ONOFF will control sink power on or offprm = {on, off}	Command: SET CECPWR_ONOFF on[CR/LF]Response: Send CEC cmd: HDMI TV OFF[CR/LF]Send CEC cmd: HDBaseT TV OFF[CR/LF]
12 Get	CEC Status GET CEC_STATUS[CR/LF]		CEC: prm1[CR/LF]Auto CEC: prm1[CR/LF]Auto CEC DelayValue: prm2 Min[CR/LF]	prm1 = {on, off}prm2= {0-100}	Command: GET CEC_STATUS[CR/LF]Response: CEC: ON[CR/LF]Auto CEC: ON[CR/LF]Auto CEC Delay Value: 2 Min [CR/LF]
13 Set	Input HDCP Support ON/OFF	SET HDCPSUPPORT_ONOFF in prm1[CR/LF]	in: HDCP Supported[CR/LF]	in = {hdmi1, hdmi2, dp}prm1 = {on, off}	Command: SET HDCPSUPPORT_ONOFF hdmi1 on[CR/LF]Response: HDMI1:HDCP Supported[CR/LF]
14 Get	Status Whether HDMI1/HDMI2 Input Support HDCP Info.	GET HDCP_STATUS[CR/LF]	in:prm1[CR/LF]in:prm1[CR/LF]HDMI OUT HDCPStatus: prm2[CR/LF]	in={hdmi1, hdmi2}prm1 = {HDCP Supported, HDCP Not supported}prm2={Non Encryption, Encryption}	Command: GET HDCP_STATUS[CR/LF]Response: HDMI1:HDCP Supported[CR/LF]HDMI2:HDCP Supported[CR/LF]HDMI OUT HDCP Status: Non Encryption[CR/LF]
15 Set	Input EDID SET EDID in prm[CR/LF]		in EDID: prm[CR/LF] in = {vga,dp,hdmi1,hdmi2}; VGA:prm={fix0, fix1, fix2, fix3, fix4}fix0: 1280x800@60Hzfix1: 1920x1200@60Hzfix2: 1920x1080@60Hzfix3: 1280x720@60Hzfix4: 1024x768@60HzDP/HDMI1/HDMI2:prm={fix0, fix1, fix2, fix3, fix4, fix5, fix6, fix7}fix0: copyfix1: 4K@30Hz 2CHfix2: 1920x108060Hzfix3: 1280x720@60Hzfix4: 1920x1200@60Hzfix5: 1280x800@60Hzfix6: 1920x1080@60Hz Dolby 5.1	Command: SET EDID hdmi1 fix1[CR/LF]Response: hdmi1 EDID: fix1[CR/LF]
16 Get	Input EDID Status	GET EDID_STATUS[CR/LF]	VGA EDID:prm[CR/LF]DP EDID:prm[CR/LF]HDMI1 EDID:prm[CR/LF]HDMI2 EDID:prm[CR/LF]	VGA:prm={fix0, fix1, fix2, fix3, fix4}fix0: 1280x800@60Hzfix1: 1920x1200@60Hzfix2: 1920x1080@60Hzfix3: 1280x720@60Hzfix4: 1024x768@60HzDP/HDMI1/HDMI2:prm={fix0, fix1, fix2, fix3, fix4, fix5, fix6, fix7}fix0: copyfix1: 4K@30Hz 2CHfix2: 1920x108060Hzfix3: 1280x720@60Hzfix4: 1920x1200@60Hzfix5: 1280x800@60Hzfix6: 1920x1080@60Hz Dolby 5.1	Command: GET EDID_STATUS[CR/LF]Response:VGA EDID: fix0[CR/LF]DP EDID: fix2[CR/LF]HDMI1 EDID: fix2[CR/LF]HDMI2 EDID: fix2[CR/LF]
17 Volume Gain Adjust		SET VOLGAIN_DATA aout prm[CR/LF]	VOLGAIN_DATA aout prm[CR/LF]	VOLGAIN is volgainaout = {audiout};prm = {0~100	Command: SET VOLGAIN_DATA audioout 50[CR/LF]Response: VOLGAIN_DATA audioout 50[CR/LF]
18 Audio Mute cmd SET MUTE aoutprm[CR/LF]			MUTE aout prm[CR/LF]	aout = {audiout};prm = {on, off}// on means mute;off means not audio mute	Command: SET MUTE audioout on [CR/LF]Response: MUTE audioout on [CR/LF]
19 Set	Output Resolution	SET RESOLUTION out prm[CR/LF]	RESOLUTION out prm[CR/LF]	prm = {3840x2160@30, 1920x1200@60, 1920x1080@60, 1600x1200@60, 1366x768@60, 1280x1024@60, 1280x720@60, 1280x800@60, 1024x768@60, auto}out = {hdmout};	Command: SET RESOLUTION hdmout auto[CR/LF]Response: RESOLUTION hdmout auto[CR/LF]
20 Set	Standby on/off	SET STANDBY_ONOFF prm[CR/LF]	STANDBY_ONOFFprmCR/LF]	prm = {on, off} Command: SET STANDBY_ONOFF on[CR/LF]Response: STANDBY_ONOFF on [CR/LF]
21 Get	Scaler Mode Status	GET SCALER_STATUS[CR/LF]	Scaler Info:STANDBY_statusprm1[CR/LF]RESOLUTIONhdmout prm2[CR/LF]HDCP hdmoutprm1[CR/LF]MUTE audiooutprm1[CR/LF]VOLGAIN_DATAaudioout prm3[CR/LF]	prm1 = {on, off}prm2={3840x2160@30, 1920x1200@60, 1920x1080@60, 1600x1200@60, 1366x768@60, 1280x1024@60, 1280x720@60, 128Ox800@60, 1024x768@60, auto}prm3={0-100}	Command: GET SCALER_STATUS[CR/LF]Response: Scaler Info:STANDBY_status off[CR/LF]RESOLUTION hdmout auto[CR/LF]HDCP hdmout on[CR/LF]MUTE audioout off[CR/LF]VOLGAIN_DATA audioout 35[CR/LF]
22	Factory Reset	RESET[CR/LF]	/	/	Command: RESET[CR/LF]
23	System Reboot	REBOOT[CR/LF]	/	/	Command: REBOOT[CR/LF
24 Get	System Status	GET SYS_STATUS[CR/LF]	Response all system status information	/ Command: GET SYS_STATUS[CR/LF]	Response:...Response all system status information
25	Upgrade Module	UPG[CR/LF]	Enter ICP Mode...[CR/LF]	/ Command: UPG CR/LF]	Response: Enter ICP Mode.....[CR/LF]

3.2 Auto Mode

Auto Mode 1 (priority mode): VGA->DP->HDMI1->HDMI2

1. When you power on the switcher, it defaults to the VGA channel if no source is active or connected. If some sources are already connected and then you power on the switcher, it will detect their priority and auto switch to the active source with the highest priority.
2. When you connect a new source after power on, the switcher might automatically switch, depending on the priority. It will auto-switch to the new source if that source has higher priority than currently selected source, otherwise, it will not auto-switch.
3. When the currently selected source is removed, the switcher might auto-switch, depending on the status of other sources connected and their priority. It will auto switch to the source active with highest priority, or remain on the current input channel if no source is active.
4. Manual switching is also valid in Priority Mode. Press the button on the front panel to switch among active sources. You can manually switch via contact closures or API commands, depending on the source status. The unit will switch if the source manually selected is active, otherwise, an LED indicator will flash twice to indicate that a source is not active and does not switch the source.

Auto Mode 2 (Last Connected):

1. When you power on the switcher, the VGA channel remains the default if no source is active or connected. If some sources are already connected and then you power on the switcher, it will detect their priority and auto switch to the active source with the highest priority.
2. When you connect a new source after power on, the switcher will detect and auto-switch to this source.
3. When you remove a currently selected source, the switcher might automatically connect to a source, depending on the status of other sources connected and their priority. It will auto switch to the source active with highest priority, or remain connected to the current input channel if no source is active.
4. Manual switching is also valid in Priority Mode. Press the front-panel button on the front panel to switch among active sources. You can manually switch between sources via contact closures or API commands depending on the source status. It will switch if the source manually selected is active, otherwise, the LED indicator will flash twice to indicate the source is not active and does not switch.

4. Set and Scaler

4.1 Set

Figure 4-1. 4-Pin DIP switch.

Table 4-1. DIP switch settings.

DIP Switch Position	Function Settings
Pin 1 Audio de-embedded		UP: Audio out de-embedded from HDMI output (Default). DOWN: Reserved.
Pin 2 Source	Switch Mode	UP: Enable Auto-Switch and Manual Switch (Default)DOWN: Manual Switch only.
Pin 3 CEC Control UP: Enable Auto-CEC Control and Manual CEC Control (Default)DOWN: Manual CEC Control only
Pin 4	Control Mode	UP: Enable API control and manual control (Default).DOWN: Manual Control only.

4.2 Scaler

HDMI output supports scaler output.

Figure 4-2. Rotary switch.

Table 4-2. Rotar y switch settings.

Position Function

0 Auto Scaler

1 Select 1024 x 768 @ 60 Hz as native video.

2 Select 1280 x 720 @ 60 Hz as native video.

3 Select 1280 x 800 @ 60 Hz as native video.

4 Select 1366 x 768 @ 60 Hz as native video.

5 Select 1600 x 1200 @ 60 Hz as native video.

6 Select 1920 x 1080 @ 60 Hz as native video.

7 Select 1920 x 1200 @ 60 Hz as native video.

8 Select 3840 x 2160 @ 30 Hz as native video.

9 API Control

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© Copyright 2016. Black Box Corporation. All rights reserved. Black Box® and the Double Diamond logo are registered trademarks of BB Technologies, Inc. Any third-party trademarks appearing in this manual are acknowledged to be the property of their respective owners.

avsc-0401h_user_rev1