Black Box AVS-HDMI2-4X4-R2 User manual

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VIDEO MATRIX
SWITCHER -
HDMI 2.0, 4X4
AVS-HDMI2-4X4-R2
USER MANUAL

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TABLE OF CONTENTS
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SAFETY PRECAUTIONS.................................................................................................................................................................... 4
CHAPTER 1: SPECIFICATIONS......................................................................................................................................................... 5
1.1 Resolution Downscaling...........................................................................................................................................................................6
CHAPTER 2: OVERVIEW ................................................................................................................................................................... 7
2.1 Introduction...............................................................................................................................................................................................7
2.2 Features ....................................................................................................................................................................................................7
2.3 What’s Included........................................................................................................................................................................................7
2.4 Hardware Description..............................................................................................................................................................................8
2.4.1 Front Panel.................................................................................................................................................................................................................8
2.4.2 Rear Panel..................................................................................................................................................................................................................9
CHAPTER 3: SYSTEM CONNECTION............................................................................................................................................. 10
3.1 Usage Precautions .................................................................................................................................................................................10
3.2 System Diagram.....................................................................................................................................................................................10
CHAPTER 4: PANEL BUTTON CONTROL ...................................................................................................................................... 11
4.1 I/O Connection Switching......................................................................................................................................................................11
4.2 I/O Connection Inquiry........................................................................................................................................................................... 11
4.3 Lock Function.........................................................................................................................................................................................11
4.4 Preset Recall Function........................................................................................................................................................................... 11
4.5 Clear Button............................................................................................................................................................................................11
CHAPTER 5: IR CONTROL............................................................................................................................................................... 12
CHAPTER 6: GUI CONTROL............................................................................................................................................................ 13
6.1 Switching Tab..........................................................................................................................................................................................14
6.2 Audio Tab ................................................................................................................................................................................................15
6.2.1 Audio Settings.........................................................................................................................................................................................................15
6.2.2 Audio Volume..........................................................................................................................................................................................................16
6.3 Configuration Tab...................................................................................................................................................................................16
6.3.1 EDID Copy ................................................................................................................................................................................................................16
6.3.2 EDID Setting ............................................................................................................................................................................................................17
6.4 CEC Tab...................................................................................................................................................................................................18
6.4.1 Input Source Device Control ................................................................................................................................................................................18
6.4.2 Output Display Device Control.............................................................................................................................................................................19
6.5 RS-232 Tab..............................................................................................................................................................................................19
6.6 Interface Tab...........................................................................................................................................................................................20
6.7 Network Tab............................................................................................................................................................................................20
6.8 Access Tab..............................................................................................................................................................................................21
CHAPTER 7: GUI UPGRADE............................................................................................................................................................ 22
7.1 GUI Upgrade Process .............................................................................................................................................................................22
CHAPTER 8: RS-232 CONTROL ...................................................................................................................................................... 23
8.1 Installation/Uninstallation of RS-232 Control Software .....................................................................................................................23
8.2 Basic Settings.........................................................................................................................................................................................23
8.3 RS-232 Communication Commands....................................................................................................................................................24
8.3.1 System Commands...............................................................................................................................................................................................24
8.3.2 Control Management ............................................................................................................................................................................................25
8.3.3 Query Commands ............................................................................................................................................................................................................................26

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8.3.4 Lock/Unlock Commands...........................................................................................................................................................................................................................27
8.3.5 Audio Commands ..................................................................................................................................................................................................28
8.3.6 HDCP COMPLIANCE...........................................................................................................................................................................................29
8.3.7 EDID Management.................................................................................................................................................................................................30
8.3.8 CEC Control.............................................................................................................................................................................................................31
CHAPTER 9: FIRMWARE UPGRADE............................................................................................................................................... 34
CHAPTER 10: TROUBLESHOOTING............................................................................................................................................... 35
APPENDIX A: REGULATORY INFORMATION ................................................................................................................................ 36
A.1 FCC Statement .......................................................................................................................................................................................36
A.2 CE Statement .........................................................................................................................................................................................36
A.3 ROHS.......................................................................................................................................................................................................36
A.4 NOM Statement .....................................................................................................................................................................................37
APPENDIX A: REGULATORY INFORMATION ................................................................................................................................ 37
APPENDIX B: DISCLAIMER/TRADEMARKS ................................................................................................................................. 38
B.1 Disclaimer ...............................................................................................................................................................................................38
B.2 Trademarks Used in this Manual ..........................................................................................................................................................38

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SAFETY PRECAUTIONS
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To ensure the best performance from the product, please read all directions carefully before using the device. Save this manual for future
reference.
Unpack the equipment carefully and save the original box and packing material for possible future shipment.
Follow basic safety precautions to reduce the risk of fire, electrical shock, and personal injury.
Do not dismantle the housing or modify the module. It may result in electrical shock or burn.
Using supplies or parts not meeting the product’s specifications may cause damage, deterioration, or malfunction.
Refer all servicing to qualified service personnel.
To prevent fire or shock hazard, do not expose the unit to rain or moisture. Do not install this product near water.
Do not put any heavy items on the extension cable in case of extrusion.
Do not remove the housing of the device as opening or removing housing may expose you to dangerous voltage or other hazards.
Install the device in a location with sufficient ventilation to avoid damage caused by overheating.
Keep the module away from liquids.
Spillage into the housing may result in fire, electrical shock, or equipment damage. If an object or liquid falls or spills on the housing,
unplug the module immediately.
Do not twist or pull the cable ends by force. Doing so can cause a malfunction.
Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the device before cleaning.
Unplug the power cord when left unused for an extended period of time.
Information on disposal for scrapped devices: do not burn or mix with general household waste. Treat as normal electrical waste.

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CHAPTER 1: SPECIFICATIONS
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TABLE 1-1 MATRIX SWITCHER SPECIFICATIONS
SPECIFICATION DESCRIPTION
Video
Video Input Signal (4) HDMI
Video Input Connector (4) HDMI Type A female
Video Input Video Resolution Up to 4K @ 60 Hz 4:4:4
Video Output (4) HDMI
Video Output Connector (4) HDMI Type A female
Video Output Resolution Up to 4K @ 60 Hz 4:4:4
HDMI Output Supports up to 5V 500mA for AoC cable
HDMI Version Up to 2.0
HDCP Version Up to 2.3
HDMI Audio Signal LPCM 7.1 audio, Dolby Atmos®, Dolby® TrueHD, Dolby Digital® Plus, DTS:X™, and DTS-HD® Master Audio™ pass-through
Digital Audio Output
Output (4) Digital SPDIF audio
Output Connector (4) Toslink connector
Digital SPDIF Audio Format Supports PCM, Dolby Digital, DTS, DTS-HD
Frequency Response 20 Hz to 20 kHz, ±1dB
Max Output Level ±0.05dBFS
THD+N < 0.05%, 20 Hz to 20 kHz bandwidth, 1 kHz sine at 0dBFS level (or max level)
SNR > 90 dB, 20Hz to 20 kHz bandwidth
Crosstalk Isolation < -70 dB, 10 kHz sine at 0dBFS level (or max level before clipping)
Noise -90 dB
Analog Audio Output
Output (4) Analog L/R Audio
Output Connector (4) L&R (RCA)
Digital SPDIF Audio Format PCM 2CH
Frequency Response 20 Hz to 20 kHz, ±1dB
Max Output Level 2.0Vrms ± 0.5dB. 2V = 16dB headroom above -10dBV (316 mV) nominal consumer line level signal
THD+N < 0.05%, 20 Hz to 20 kHz bandwidth, 1 kHz sine at 0dBFS level (or max level)
SNR > 80 dB, 20Hz to 20 kHz bandwidth
Crosstalk Isolation < -80 dB, 10 kHz sine at 0dBFS level (or max level before clipping)
L-R Level Deviation < 0.05 dB, 1 kHz sine at 0dBFS level (or max level before clipping)
Frequency Response
Deviation < ± 0.5dB 20Hz to 20KHz
Output Load Capability 1k ohm and higher (supports 10x paralleled 10k ohm loads)
Noise -80 dB
Control
Control Port (1) IR EYE, (1) RS-232, (1) TCP/IP
Control Connector (1) 3.5mm jack, (1) 3-pin terminal block, (1) USB-A, (1) RJ-45

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CHAPTER 1: SPECIFICATIONS
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1.1 RESOLUTION DOWNSCALING
The product supports video resolution downscaling. The 4K input can be automatically degraded to 1080p output for compatibility with a
1080p display, as shown in the chart below.
TABLE 1-2. VIDEO RESOLUTION DOWN SCALING
INPUT OUTPUT
NUMBER RESOLUTION REFRESH COLOR
SPACE DOWN SCALE 1080P SPECS
1 3840x2160 60 4:4:4 Supported 1080p @ 60Hz 4:4:4
2 3840x2160 30 4:4:4 Supported 1080p @ 30Hz 4:4:4
3 3840x2160 24 4:4:4 Supported 1080p @ 24Hz 4:4:4
4 3840x2160 60 4:2:0 Supported 1080p @ 60Hz 4:2:0
5 3840x2160 30 4:2:0 Supported 1080p @ 30Hz 4:2:0
6 3840x2160 24 4:2:0 Supported 1080p @ 24Hz 4:2:0
7 3840x2160 60 4:2:2 Not Supported N/A
8 3840x2160 30 4:2:2 Not Supported N/A
9 3840x2160 24 4:2:2 Not Supported N/A
NOTE: Only the last two outputs (output 3 and output 4) have downscaling function.
TABLE 1-1 MATRIX SWITCHER SPECIFICATIONS CONTINUED
SPECIFICATION DESCRIPTION
General
Transmission Distance 4K/60Hz/444 5m, 4K/60Hz/420 10m, 1080p 15m
Bandwidth 18 Gbps
Operation Temperature 23 to 131° F (-5 to +55° C)
Storage Temperature -13 to 158° F (-25 to +70° C)
Relative Humidity 10 to 90%
External Power Supply Input: 100 to 240 VAC, 50/60Hz; Output: 24 VDC, 1.25 A
Maximum Power Consumption 18.3 W
Dimensions (H x W x D) 1.7” x 17.2” x 9.3” (4.4 x 43.6 x 23.6 cm)
Net Weight 5.7 lb. (2.6 kg)
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CHAPTER 2: OVERVIEW
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2.1 INTRODUCTION
The AVS-HDMI2-4x4-R2 is a professional 4x4 HDMI 2.0 Matrix Switcher with Audio Matrix. It includes 4 HDMI inputs and 4 HDMI outputs.
The last two outputs have downscaling function, which is designed for switching two HDMI2.0 and HDCP2.3 compliant signals. It also
features 4 SPDIF and 4 analog audio outputs for audio matrix.
The HDMI matrix switcher features comprehensive EDID management and advanced HDCP handing to ensure maximum functionality
with a wide range of video sources.
The matrix switcher not only supports bi-directional IR, RS-232 extension but it also has IR, RS-232, and TCP/IP control options.
2.2 FEATURES
4x4 HDMI 2.0 Matrix Switcher
Supports 4K/60 4:4:4; HDCP2.3 compliant
Audio Matrix
Audio out can de-embedded from arbitrary input or output.
Individual volume adjustment on each left and right output
Supports 4K to 1080p downscaling up to 2 outputs
HDMI out provides 2.5 W to power Active Optical Cable (AoC).
HDMI Output support up to 5V 500mA for AoC cable.
Controllable by front panel, IR, RS-232, and TCP/IP.
2.3 WHAT’S INCLUDED
(1) Video matrix switcher 4x4
(1) IR Remote
(1) IR Receiver
(1) Power Adaptor (24V DC, 1.25 A)
(1) RS-232 Cable (3-pin to DB9)
(2) Mounting Ears
(6) Screws
(4) Plastic Cushions
NOTE: Please contact your distributor immediately if any damage or defect in the components is found.

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CHAPTER 2: OVERVIEW
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2.4 HARDWARE DESCRIPTION
Figures 2-1 and 2-2 show the front and back panels of the HDMI matrix switcher. Tables 2-1 and 2-2 describe their components.
2.4.1 FRONT PANEL
FIGURE 2-1: FRONT PANEL
TABLE 2-1. FRONT PANEL COMPONENTS
NUMBER IN
FIGURE 2-1 COMPONENT DESCRIPTION
1 Power Indicator
Illuminates green when device powered on
Turns red in standby mode
2 IR sensor Built-in IR sensor that receives IR signal sent from IR remote
3 INPUT selector button
OUTPUT selector button
Press one of the four input selector buttons to switch the input source.
Press one of the four output selector buttons to select the output channel.
4
ENTER button
LOCK button
ALL button
CLEAR button
Confirm operation
Press this button for three seconds to lock or unlock all front buttons.
Select all outputs to convert an input to all outputs: Press INPUTS 1 + ALL + ENTER
Withdraw button
5 PRESET RECALL HOLD TO STORE
Press and hold a button labeled 1 to 4 to save the current switching status to the corresponding
preset 1 to 4.
Press a button labeled 1 to 4 to recall the saved corresponding preset 1 to 4.

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CHAPTER 2: OVERVIEW
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2.4.2 REAR PANEL
FIGURE 2-2: REAR PANEL
TABLE 2-2 REAR PANEL COMPONENTS
NUMBER IN
FIGURE 2-2 COMPONENT DESCRIPTION
1 Inputs (4) HDMI input ports that connect with HDMI sources
2 Outputs (4) ports that connect with HDMI displays
The latter four HDMI ports have downscaling function.
3 Audio Matrix Outputs
SPDIF: (4) audio output ports for de-embedded HDMI audio
L&R (RCA): (4) pairs of audio output ports for de-embedded HDMI audio
4 Controls
IR EYE: Connects with external IR receiver for using the IR remote to control the Matrix Switcher
RS-232: 3-pin terminal block to connect the RS-232 control device, such as a PC, or a device to
be controlled by RS-232 commands
USB-A: USB Type A port for updating firmware.
TCP/IP: RJ-45 port to connect the control device, such as a PC, to control the matrix by GUI
5 DC 24V Connect with 24VDC, 1.25A power adaptor

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CHAPTER 3: SYSTEM CONNECTION
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3.1 USAGE PRECAUTIONS
Make sure all components and accessories are included before installation.
System should be installed in a clean environment with proper temperature and humidity.
All of the power switches, plugs, sockets, and power cords should be insulated and safe.
All devices should be connected before you power on the device.
3.2 SYSTEM DIAGRAM
The following diagram illustrates typical input and output connections that can be used with the HDMI matrix switcher.
FIGURE 3-1: TYPICAL APPLICATION
Laptop
Laptop
Blue-Ray
Game Console 4K TV TV Soundbar Amplifier
Remote
IR
Receiver
C e n t r a l
C o n t r o l
System
Router Laptop
HDMI
Audio
RS-232
Ethernet
IR Control

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CHAPTER 4: PANEL BUTTON CONTROL
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4.1 I/O CONNECTION SWITCHING
The front panel features four input selection buttons and four output selection buttons for switching the I/O connection.
1. To convert one input to an output:
Example: Input 1 to Output 3
—> Press INPUTS 1 + OUTPUTS 3 + ENTER button.
2. To convert an input to several outputs:
Example: Convert Input 1 to Output 2, Output 3, Output 4
—> Press INPUTS 1 + OUTPUTS 2, OUTPUTS 3, OUTPUTS 4 + ENTER button.
3. To convert an input to four outputs:
Example: Convert Input 2 to all outputs
—> Press INPUTS 2 + ALL button + ENTER button.
NOTE: Indicator lights for the pressed buttons will blink blue three times and then turn off if the conversion succeeds. If the
conversion fails, they will turn off immediately.
4.2 I/O CONNECTION INQUIRY
Press OUTPUTS button 1, 2, 3 or 4 to inquiry its corresponding input. Then the input button indicator light will turn blue.
4.3 LOCK FUNCTION
To engage the lock function, long press the LOCK button for three seconds. All buttons on the front panel will become disabled. Long
press the LOCK button for three seconds again or unlock on the GUI control to unlock the front panel.
4.4 PRESET RECALL FUNCTION
Press and hold a PRESET labeled 1 to 4 for at least three seconds to save the current switching status to the corresponding preset
labeled 1 to 4.
Press a PRESET labeled 1 to 4 to recall the saved corresponding preset 1 to 4.
NOTE: The matrix switcher supports 6 presets, but only presets labeled 1 to 4 can be saved and recalled by button control. Please
manage other preset buttons by GUI control or RS-232 control.
4.5 Clear Button
Press the CLEAR button if you want to withdraw an operation before the ENTER button takes effect. The matrix will return to the previous
status.

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CHAPTER 5: IR CONTROL
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The HDMI Matrix Switcher features one built-in IR receiver to receive an IR signal from an IR remote to enable IR control. If the external IR
receiver or other IR control device needs to be used, the IR EYE port on rear panel can be connected.
1. Standby button: Press to enter/exit standby mode.
2. INPUTS: Input channel selection buttons (same as the corresponding front panel buttons)
3. OUTPUTS: Output channel selection buttons (same as the corresponding front panel buttons)
4. Menu buttons:
• ALL: Select all inputs/outputs.
To convert an input to all outputs:
Example: Input 1 to all Outputs:
—> Press INPUTS 1 + ALL + ENTER
• EDID management button:
1. One input port obtains the EDID data from one output port.
Example: Input 2 obtains EDID data from output 4:
—> Press EDID + INPUTS 2 + OUTPUTS 4+ ENTER
2. All input ports obtain EDID data from one output port.
Example: All input ports obtain EDID data from output 3:
—> Press EDID + ALL + OUTPUTS 3 + ENTER
• CLEAR: Withdraw button.
• ENTER: Confirm operation.
FIGURE 5-1: IR REMOTE CONTROL

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CHAPTER 6: GUI CONTROL
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The matrix can be controlled via TCP/IP. The default IP settings are:
IP Address: 192.168.0.178
Subnet Mask: 255.255.255.0
Gateway: 192.168.0.1
Type 192.168.0.178 in your Internet browser. It will then display the below log-in screen:
FIGURE 6-1: LOG IN SCREEN
USERNAME: admin
PASSWORD: admin
Type the user name and password. Then click Login to enter the section for video switching.

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CHAPTER 6: GUI CONTROL
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6.1 SWITCHING TAB
You can use the 4x4 button grid on the Switching Tab to set which inputs are directed to which outputs. For example, clicking the button
on the Input 1 row and Outp ut 1 column directs input 1 to output 1.
You can also use the six numbered buttons to save and load layout presets.
FIGURE 6-2: LAYOUT PRESETS
To save a given layout, first click on one of the numbered buttons. Then click on the Save button.
To load a previously saved layout, first click on one of the numbered buttons. Then click on the Recall button.
FIGURE 6-3: SAVING AND LOADING PRESETS

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CHAPTER 6: GUI CONTROL
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6.2 AUDIO TAB
You can set and modify the matrix switcher’s audio settings and volume on the audio tab. Use the Setting and Volume buttons on this
tab to view and modify these settings.
6.2.1 AUDIO SETTINGS
FIGURE 6-4: AUDIO SETTINGS
There are eight audio sources can be selected for four digital SPDIF output ports.
TABLE 6-1. AUDIO OUTPUT PORTS AND AUDIO SOURCES
AUDIO SOURCES
AUDIO OUTPUT
PORTS INPUT BREAKOUT OUTPUT BREAKOUT
SPDIF 1 & ANALOG 1 Audio on Input 1
Audio on Input 2
Audio on Input 3
Audio on Input 4
Audio on Output 1
Audio on Output 2
Audio on Output 3
Audio on Output 4
SPDIF 2 & ANALOG 2
SPDIF 3 & ANALOG 3
SPDIF 4 & ANALOG 4

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CHAPTER 6: GUI CONTROL
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6.2.2 AUDIO VOLUME
Use four pairs of analog Left/Right (L/R) audio to control their output’s volume.
FIGURE 6-5: AUDIO VOLUME SETTINGS
6.3 CONFIGURATION TAB
You can set and modify EDID options on the Configuration tab. Use the EDID Copy and EDID Setting buttons on this tab to view and
modify these settings.
6.3.1 EDID COPY
FIGURE 6-6: EDID COPY SETTINGS
Copy the EDID of the selected output device to input source device(s).

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CHAPTER 6: GUI CONTROL
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6.3.2 EDID SETTING
FIGURE 6-7: EDID CONFIGURATION SCREEN
1. Select the compatible built-in EDID for the selected input source.
2. Upload the user-defined EDID by following the steps below:
Prepare the EDID file (.bin) on the control computer.
Select the User-defined option.
Click the box . Then select the EDID file (.bin) according to the tool tip.
Click Apply to upload the user-defined EDID. Then click Confirm to save the setting.

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6.4 CEC TAB
If the input source devices/output display devices support CEC, they can be controlled through the CEC interface. Use the Input and
Output tabs on this tab to control supported devices.
6.4.1 INPUT SOURCE DEVICE CONTROL
FIGURE 6-8: INPUT TAB SCREEN
To control an input device, select the Input tab if it is not already selected. After you select an input source device to be controlled, press
the desired function button(s) to control it.
NOTE: Two or more input source devices cannot be controlled simultaneously.
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6.4.2 OUTPUT DISPLAY DEVICE CONTROL
FIGURE 6-9: OUTPUT TAB SCREEN
To control an output device, select the Output tab if it is not already selected. After you select an output source device to be controlled,
press the desired function button(s) to control it.
NOTE: Two or more output devices cannot be controlled simultaneously.
6.5 RS-232 TAB
You can set and modify ASCII and HEX values on the RS-232 tab. Use the ASCII and HEX buttons on this tab to view and modify these
settings.
FIGURE 6-10: RS-232 TAB
Baud Rate: Supports 2400, 4800, 9600, 19200, 38400, 57600, or 115200.
Command Ending: NULL, CR, LF, or CR+LF can be chosen.
Command: To control the third-party device that is connected to the switcher’s RS-232 port, type the command in this box.
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6.6 INTERFACE TAB
You can set and modify the title bar label and the button labels on the Interface tab.
FIGURE 6-11: INTERFACE TAB
To change label text, click in the corresponding box on this tab and edit the text.
6.7 NETWORK TAB
You can view and set Static IP or Dynamic Host Configuration Protocol (DHCP) settings on the Network tab.
FIGURE 6-12: NETWORK TAB
To change a network setting, select either DHCP or Static IP. Then click in the IP Address, Submet Mask, or Gateway box on this tab and
edit the text.
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