Kramer VS-42UHD User Manual
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Kramer VS-42UHD User Manual

4x2 hdmi matrix switcher
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USER MANUAL
MODEL:
VS-42UHD
4x2 HDMI Matrix Switcher
P/N: 2900-300609 Rev 1
www.kramerAV.com

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Summary of Contents for Kramer VS-42UHD

  • Page 1 USER MANUAL MODEL: VS-42UHD 4x2 HDMI Matrix Switcher P/N: 2900-300609 Rev 1 www.kramerAV.com...

  • Page 4: Table Of Contents

    Generating a Test Pattern Configuring and Maintaining the VS-42UHD Setting the DIP-Switches Resetting the VS-42UHD to Factory Default Settings Upgrading the Firmware Operating the VS-42UHD Remotely via the Web Pages Browsing the VS-42UHD Web Pages Routing Page EDID Page Device Setting Page...
  • Page 5 Figure 1: VS-42UHD 4x2 HDMI Matrix Switcher Front Figure 2: VS-42UHD 4x2 HDMI Matrix Switcher Rear Figure 3: Connecting the VS-42UHD 4x2 HDMI Matrix Switcher Figure 4: Local Area Connection Properties Window Figure 5: Internet Protocol Version 4 Properties Window...

  • Page 6: Introduction

    Room Connectivity; GROUP 10: Accessories and Rack Adapters; GROUP 11: Sierra Video Products; GROUP 12: Digital Signage; GROUP 13: Audio; and GROUP 14: Collaboration. Congratulations on purchasing your Kramer VS-42UHD 4x2 HDMI Matrix Switcher. This product, which incorporates HDMI™ technology, is ideal for: •...

  • Page 7: Getting Started

    Avoid interference from neighbouring electrical appliances that may adversely influence signal quality • Position your VS-42UHD away from moisture, excessive sunlight and dust This equipment is to be used only inside a building. It may only be connected to other equipment that is installed inside a building.

  • Page 8: Recycling Kramer Products

    Kramer Electronics has made arrangements with the European Advanced Recycling Network (EARN) and will cover any costs of treatment, recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility. For details of Kramer’s recycling arrangements in your particular country go to our recycling pages at www.kramerav.com/support/recycling/.

  • Page 9: Overview

    Overview The VS-42UHD is a high quality, 4x2 matrix switcher for HDMI signals. It reclocks and equalizes the signals and can route any input to either or both outputs simultaneously. In particular, the VS-42UHD features: • Up to 8.91Gbps data rate (2.97Gbps per graphics channel) Suitable for resolutions up to UXGA and 4K x 2K •...

  • Page 10: Using The Ir Transmitter

    This distance can be extended to up to 60m when used with three extension cables (for example, P/N C-A35M/A35F-50). Before using the external IR receiver, be sure to arrange for your Kramer dealer to insert the internal IR connection cable (for example, P/N: 505-70434010-S) with the 3.5mm connector that fits into the REMOTE IR opening on the rear panel.

  • Page 11: Defining The Vs-42Uhd 4X2 Hdmi Matrix Switcher

    Defining the VS-42UHD 4x2 HDMI Matrix Switcher This section defines the VS-42UHD. Figure 1: VS-42UHD 4x2 HDMI Matrix Switcher Front Feature Function IR LED Lights yellow when receiving an IR signal IR Sensor Signal receiver for the infrared remote control...

  • Page 12: Figure 2: Vs-42Uhd 4X2 Hdmi Matrix Switcher Rear

    Figure 2: VS-42UHD 4x2 HDMI Matrix Switcher Rear Feature Function INPUT 1~4 HDMI Input Connect to up to four HDMI sources (see Connectors Section 6.1) REMOTE IR Opening Connect to an external IR receiver for controlling the device via an IR remote controller (see Section 3.1).

  • Page 13: Connecting The Vs-42Uhd

    You do not have to connect all the inputs and outputs, connect only those that are required. To connect the VS-42UHD, as illustrated in the example in Figure 3, do the following: 1.

  • Page 14: Connecting A Serial Controller Via Rs-232

     Pin 5 to the GND pin on the VS-42UHD RS-232 terminal block Connecting to the VS-42UHD via Ethernet You can connect to the VS-42UHD via Ethernet using either of the following methods: • Directly to the PC using a crossover cable (see Section 4.2.1)

  • Page 15: Figure 4: Local Area Connection Properties Window

    4.2.1 Connecting the Ethernet Port Directly to a PC You can connect the Ethernet port of the VS-42UHD directly to the Ethernet port on your PC using a crossover cable with RJ-45 connectors. This type of connection is recommended for identifying the VS-42UHD with the factory configured default IP address.

  • Page 16: Figure 5: Internet Protocol Version 4 Properties Window

    6. Select Use the following IP Address for static IP addressing and fill in the details as shown in Figure For TCP/IPv4 you can use any IP address in the range 192.168.1.1 to 192.168.1.255 (excluding 192.168.1.39) that is provided by your IT department. VS-42UHD - Connecting the VS-42UHD...

  • Page 17: Connecting The Remote Contact-Closure Switches

    4.2.2 Connecting the Ethernet Port via a Network Hub or Switch You can connect the Ethernet port of the VS-42UHD to the Ethernet port on a network hub or using a straight-through cable with RJ-45 connectors. Connecting the Remote Contact-Closure Switches You can connect up to four remote, contact-closure switches per output to control the VS-42UHD remotely.

  • Page 18: Figure 7: Remote Contact-Closure Switch Connections

    Figure 7 illustrates the wiring of the switch connections to the terminal block. Figure 7: Remote Contact-closure Switch Connections VS-42UHD - Connecting the VS-42UHD...

  • Page 19: Principles Of Operation

    • EDID operation (see Section 5.3) Automatic Signal Detection The VS-42UHD can automatically detect the presence of a video signal on an input based on the presence of a video sync or clock signal. Input Switching Modes 5.2.1 Manual Mode In Manual switching mode, routing is performed according to the front panel button selection or according to the remote command selection.

  • Page 20: Edid Operation

    The EDID is non-volatile and the last valid EDID is used when the device is powered up. Step-in Functionality The VS-42UHD can function as a step-in switcher when connected to a suitable HDMI transmitter, (for example, the SID-X3N, DIP-30 or DIP-31) using the correct HDMI cable with HEC support.

  • Page 21: Operating The Vs-42Uhd 4X2 Hdmi Matrix Switcher

    Operating the VS-42UHD 4x2 HDMI Matrix Switcher This section describes operating the VS-42UHD and consists of: • Switching an input to an output (see Section 6.1) • Acquiring an EDID from an output (see Section 6.2) • Muting and unmuting the outputs (see Section 6.3)

  • Page 22: Muting And Unmuting The Outputs

    1. Press the currently selected (and lit) input button. The output is muted and the button flashes. 2. Press the currently muted (and flashing) input button. The output is unmuted and the button lights solid. VS-42UHD - Operating the VS-42UHD 4x2 HDMI Matrix Switcher...

  • Page 23: Locking And Unlocking The Front Panel Buttons

    2. Press and hold the Lock button again. The front panel buttons are unlocked and the button no longer lights. Generating a Test Pattern For diagnostic purposes, the VS-42UHD can generate a number of test patterns on the outputs. Figure 8 shows the test patterns available.

  • Page 24: Configuring And Maintaining The Vs-42Uhd

    Configuring and Maintaining the VS-42UHD This section describes the configuration and maintenance of the VS-42UHD and consists of: • Setting the DIP-switches (see Section 7.1) • Resetting the device to factory default settings (see Section 7.2) • Upgrading the firmware (see Section 7.3)

  • Page 25: Resetting The Vs-42Uhd To Factory Default Settings

    3. While holding down the Reset button, power on the device. 4. Wait a few seconds and release the button. The device is reset to its factory settings. Upgrading the Firmware The VS-42UHD can be upgraded via any of the following: • Mini USB •...

  • Page 26: Operating The Vs-42Uhd Remotely Via The Web Pages

    Operating the VS-42UHD Remotely via the Web Pages The VS-42UHD can be operated remotely using the embedded Web pages. The Web pages are accessed using a Web browser and an Ethernet connection. Before attempting to connect: • Perform the procedures in Section •...

  • Page 27: Figure 9: The Loading Page

    Figure 9: The Loading Page Immediately after the Loading page, the General Info page appears which displays information related to the device and the Web page version. Figure 10: The General Info Page VS-42UHD - Operating the VS-42UHD Remotely via the Web Pages...

  • Page 28: Routing Page

    Routing Page The VS-42UHD Routing page lets you perform operational actions, such as, switching inputs/outputs and selecting HDCP support. Figure 11: The Routing Page Item Description Output Buttons 1 and 2 2 Buttons for output selection, signal identification, and audio and...

  • Page 29: Figure 12: The Output Buttons

    Click the button to mute the video Signal Indicator Indicates whether or not there is a device connected to the output Mode Indicator Indicates the switching mode currently employed Figure 13: The Input Buttons VS-42UHD - Operating the VS-42UHD Remotely via the Web Pages...

  • Page 30: Figure 14: The Remote Device Control Window

    The button changes color to purple and the output is switched. 8.2.2 Controlling a Remote Transmitter Compatible remote transmitters, (for example, the SID-X3N, DIP-30 or DIP-31) that are connected to the VS-42UHD can be controlled using the Web pages, (see Section 8.2, Figure 13).

  • Page 31: Figure 15: Test Pattern Tab

    The VS-42UHD allows you to program the general purpose buttons on remote modules. The table shows the functionality defined for each button. The options are: • HDMI—selects one of the four inputs • Echo—allows a connected controller to be programmed to perform a variety...

  • Page 32: Edid Page

    3. Click the required test pattern button. The button changes color and the selected test pattern is switched to the Output. EDID Page The VS-42UHD EDID page lets you copy EDID data to one or more Inputs from an: • Output •...
  • Page 33 All selected Input buttons change color and the EDID summary information reflects the Input selection(s). 5. Click the Copy button. The “EDID was copied” success message is displayed and the EDID data are copied to the selected Input(s). VS-42UHD - Operating the VS-42UHD Remotely via the Web Pages...

  • Page 34: Device Setting Page

    6. Click OK. Device Setting Page The VS-42UHD Device Settings page lets you modify some communication parameters and view others. Figure 17: The Device Setting Page To modify serial or Ethernet communication parameters: 1. Adjust the parameters as required, either by entering the parameters directly or by using the drop-down list.

  • Page 35: Firmware Upgrade Page

    The firmware file name is displayed in the Firmware Upgrade page. 4. Click Start Upgrade. The firmware file is loaded and a progress bar is displayed. Do not interrupt the process or the VS-42UHD may be damaged. 5. When the process is complete reboot the device. The firmware is upgraded.

  • Page 36: About Us Page

    About Us Page The VS-42UHD About Us page displays the Web page version and Kramer Electronics Ltd company details. Figure 19: The About Us Page VS-42UHD - Operating the VS-42UHD Remotely via the Web Pages...

  • Page 37: Wiring The Twisted Pair Rj-45 Connectors

    Blue / White Green Brown / White Brown Pair 1 4 and 5 Pair 2 1 and 2 Pair 3 3 and 6 Pair 4 7 and 8 Figure 20: TP Pinout Wiring VS-42UHD - Wiring the Twisted Pair RJ-45 Connectors...

  • Page 38: Technical Specifications

    1.6kg (3.5lbs) approx. INCLUDED ACCESSORIES: Power supply, RC-IR3 remote control OPTIONS: External remote IR receiver cable, RK-1 Specifications are subject to change without notice For the most updated resolution list, go to our Web site at www.kramerav.com VS-42UHD - Technical Specifications...

  • Page 39: Default Communication Parameters

    Default Communication Parameters RS-232 Protocol 3000 Baud Rate: 115,200 Data Bits: Stop Bits: Parity: None Command Format: ASCII TCP/IP Parameters IP Address: 192.168.1.39 Netmask: 255.255.0.0 Gateway: 0.0.0.0 TCP Port #: 5000 UDP Port #: 50000 VS-42UHD - Default Communication Parameters...

  • Page 40: Default Edid

    1920 x 1200p at 60Hz - VESA STD 1152 x 864p at 75Hz - VESA STD Report information Date generated... 8/11/2016 Software revision..2.60.0.972 Data source....Real-time 0x0100 Operating system..6.1.7601.2.Service Pack 1 Raw data 00,FF,FF,FF,FF,FF,FF,00,10,AC,15,F0,4C,4E,56,32,13,14,01,03,80,34,20,78,EE,1E,C5,AE,4F,34,B1,26, 0E,50,54,A5,4B,00,81,80,A9,40,D1,00,71,4F,01,01,01,01,01,01,01,01,28,3C,80,A0,70,B0,23,40,30,20, 36,00,06,44,21,00,00,1A,00,00,00,FF,00,46,35,32,35,4D,30,35,36,32,56,4E,4C,0A,00,00,00,FC,00,44, 45,4C,4C,20,55,32,34,31,30,0A,20,20,00,00,00,FD,00,38,4C,1E,51,11,00,0A,20,20,20,20,20,20,00,39 --------------------------- VS-42UHD - Default EDID...
  • Page 41 1920 x 1200p at 60Hz - VESA STD 1152 x 864p at 75Hz - VESA STD Report information Date generated... 8/11/2016 Software revision..2.60.0.972 Data source....Real-time 0x1300 Operating system..6.1.7601.2.Service Pack 1 Raw data 00,FF,FF,FF,FF,FF,FF,00,10,AC,15,F0,4C,34,45,41,2B,16,01,03,80,34,20,78,EE,1E,C5,AE,4F,34,B1,26, 0E,50,54,A5,4B,00,81,80,A9,40,D1,00,71,4F,01,01,01,01,01,01,01,01,28,3C,80,A0,70,B0,23,40,30,20, 36,00,06,44,21,00,00,1A,00,00,00,FF,00,46,35,32,35,4D,32,41,52,41,45,34,4C,0A,00,00,00,FC,00,44, 45,4C,4C,20,55,32,34,31,30,0A,20,20,00,00,00,FD,00,38,4C,1E,51,11,00,0A,20,20,20,20,20,20,00,2D --------------------------- VS-42UHD - Default EDID...
  • Page 42 1152 x 864p at 70Hz - VESA STD 1280 x 960p at 60Hz - VESA STD Report information Date generated... 8/11/2016 Software revision..2.60.0.972 Data source....Real-time 0x2500 Operating system..6.1.7601.2.Service Pack 1 Raw data 00,FF,FF,FF,FF,FF,FF,00,2D,B2,00,12,01,01,01,01,FF,15,01,03,80,34,20,78,EA,B3,25,AC,51,30,B4,26, 10,50,54,FF,FF,80,81,8F,81,99,A9,40,61,59,45,59,31,59,71,4A,81,40,01,1D,00,72,51,D0,1E,20,6E,28, 55,00,07,44,21,00,00,1E,00,00,00,FF,00,35,30,35,2D,37,30,39,39,39,30,31,30,30,00,00,00,FC,00,56, 53,2D,34,32,55,48,44,00,00,00,00,00,00,00,00,FD,00,38,4C,1E,53,11,00,0A,20,20,20,20,20,20,01,5D --------------------------- VS-42UHD - Default EDID...
  • Page 43 000000C8 = 15028086.00100406.02000004.00000000.F7A00000.F7A39000.00000001.00000000 000000D0 = 1E2D8086.02900006.0C032004.00000000.F7A38000.00000000.00000000.00000000 000000D8 = 1E208086.00100006.04030004.00000010.F7A30004.00000000.00000000.00000000 000000E0 = 1E108086.00100004.060400C4.00810010.00000000.00000000.00020200.200000F0 000000E8 = 1E268086.02900006.0C032004.00000000.F7A37000.00000000.00000000.00000000 000000F0 = 244E8086.00100007.060401A4.00010000.00000000.00000000.20040400.2280C0C0 000000F8 = 1E478086.02100007.06010004.00800000.00000000.00000000.00000000.00000000 00000100 = 118710DE.00100007.030000A1.00800010.F6000000.E000000C.00000000.E800000C 00000101 = 0E0A10DE.00100006.040300A1.00800010.F7080000.00000000.00000000.00000000 00000300 = 10D38086.00100406.02000000.00000010.F7900000.00000000.00000001.F7920000 00000400 = 98359710.02800001.07800001.00002010.0000C051.0000C041.0000C031.0000C021 00000418 = 581111C1.02900006.0C001070.00002010.F7800000.00000000.00000000.00000000 -------- VS-42UHD - Default EDID...

  • Page 44: Protocol 3000

    The command framing varies according to how you interface with the VS-42UHD. For example, a basic video input switching command that routes a layer 1 video signal to HDMI out 1 from HDMI input 2 (ROUTE 1,1,2), is entered as follows: •...

  • Page 45: 13.1 Understanding Protocol 3000

    You can enter commands directly using terminal communication software (e.g., Hercules) by connecting a PC to the serial or Ethernet port on the VS-42UHD. To enter CR press the Enter key (LF is also sent but is ignored by the command parser).
  • Page 46 Spaces between parameters or command terms are ignored. Commands in the string do not execute until the closing character is entered. A separate response is sent for every command in the chain. VS-42UHD - Protocol 3000...

  • Page 47: 13.2 Kramer Protocol 3000 Syntax

    13.2 Kramer Protocol 3000 Syntax The Kramer Protocol 3000 syntax uses the following delimiters: • CR = Carriage return (ASCII 13 = 0x0D) • LF = Line feed (ASCII 10 = 0x0A) • SP = Space (ASCII 32 = 0x20) Some commands have short name syntax in addition to long name syntax to enable faster typing.

  • Page 48: 13.3 Protocol 3000 Commands

    Get HDCP signal status (system) NAME Set/get machine (DNS) name (system – Ethernet) NAME-RST Reset machine (DNS) name to factory default (system – Ethernet) PRIO? Get priority for an input (system) SIGNAL Get input signal lock status (system) VS-42UHD - Protocol 3000...
  • Page 49 ~nn@BUILD-DATESPdateSPtimeCR LF Parameters date – Format: YYYY/MM/DD where YYYY = Year, MM = Month, DD = Day time – Format: hh:mm:ss where hh = hours, mm = minutes, ss = seconds Response Triggers Notes K-Config Example “#BUILD-DATE?”,0x0D VS-42UHD - Protocol 3000...
  • Page 50 1. Multi-line: ~nn@Device available protocol 3000 commands:CR LFcommand,SP command...CR LF 2. Multi-line: ~nn@HELPSPcommand:CR LFdescriptionCR LFUSAGE:usageCR LF Parameters COMMAND_NAME – name of a specific command Response Triggers Notes To get help for a specific command use: HELPSPCOMMAND_NAMECR LF K-Config Example “#HELP”,0x0D VS-42UHD - Protocol 3000...
  • Page 51 Get front panel lock state Option 1: #LOCK-FP?␍ Response Set: ~nn@LOCK-FP␠lock_mode␠OK␍␊ Get: ~nn@LOCK-FP␠lock_mode␍␊ Parameters lock_mode - 0/OFF - unlocks the front panel buttons, 1/ON - locks the front panel buttons Response Triggers Notes Lock the front panel buttons: “#LOCK-FP 1”,0x0D VS-42UHD - Protocol 3000...
  • Page 52 Permission Transparency Set: Get: PROT-VER? End User Public Description Syntax Set: Get: Get device protocol version #PROT-VER?CR Response ~nn@PROT-VERSP3000:versionCR LF Parameters version - XX.XX where X is a decimal digit Response Triggers Notes K-Config Example “#PROT-VER?”,0x0D VS-42UHD - Protocol 3000...
  • Page 53 Get device serial number #SN?CR Response ~nn@SNSPserial_numberCR LF Parameters serial_number – 11 decimal digits, factory assigned Response Triggers Notes This device has a 14 digit serial number, only the last 11 digits are displayed K-Config Example “#SN?”,0x0D VS-42UHD - Protocol 3000...
  • Page 54 After every change in output HPD status from Off to On (1) After every change in output HPD status form Off to On and all parameters (new EDID, etc.) are stable and valid (2) Notes K-Config Example Get the output HPD status of HDMI Out: “#DISPLAY? 1”,0x0D VS-42UHD - Protocol 3000...
  • Page 55 (device button, device menu or other) or if the HDCP mode changed Notes Set HDCP working mode on the device input: HDCP not supported - HDCP Off HDCP support changes following detected sink - MIRROR OUTPUT K-Config Example Disable HDCP mode on HDMI In 2: “#HDCP-MOD 2,0”,0x0D VS-42UHD - Protocol 3000...
  • Page 56 Input stage (0) – get the HDCP signal status of the source device connected to the specified input K-Config Example Get the HDCP input signal status of the source device connected to HDMI In 1: “#HDCP-STAT? 0,1”,0x0D VS-42UHD - Protocol 3000...
  • Page 57 Reset machine (DNS) name to Set: #NAME-RSTCR factory default Get: Response ~nn@NAME-RSTSPOKCR LF Parameters Response Triggers Notes Factory default of machine (DNS) name is “KRAMER_” K-Config Example Reset the DNS name of the device to the factory default: “#NAME-RST”,0x0D VS-42UHD - Protocol 3000...
  • Page 58 After execution, response is sent to all com ports if PRIO was set by any other external control device (button press, device menu and similar) Notes The PRIO max value may vary for different devices K-Config Example Get the input priority of HDMI In 2: “#PRIO? 2”,0x0D VS-42UHD - Protocol 3000...
  • Page 59 After execution, a response is sent to the com port from which the Get was received A response is sent after every change in input signal status from On to Off or from Off to On Notes K-Config Example Get the input signal lock status of HDMI In 2: “#SIGNAL? 2”,0x0D VS-42UHD - Protocol 3000...
  • Page 60 After execution, a response is sent to all com ports if MTX-MODE was set by any other external control device (button press, WEB, device menu and similar) K-Config Example Get auto switch mode of Out 2: “#MTX-MODE? 2,0”,0x0D VS-42UHD - Protocol 3000...
  • Page 61 The get command identifies input switching on Step-in clients The set command is for remote input switching on Step-in clients (essentially via by the Web) K-Config Example Set the remote input switching of HDMI In 3 to HDMI Out 1: “#ROUTE 1,1,3”,0x0D VS-42UHD - Protocol 3000...
  • Page 62 – output number: 1 (HDMI Out 1), 2 (HDMI Out 2), * (for all outputs) Response Triggers Notes K-Config Example Set the video switch state from HDMI In 4 to HDMI Out 2: “#VID 4>1”,0x0D VS-42UHD - Protocol 3000...
  • Page 63 0 - device replies with detailed info of native resolution index 255 - device replies with detailed info of current resolution K-Config Example Get the detailed custom defined resolution from HDMI Out 2: “#DEF-RES? 255,0,2”,0x0D VS-42UHD - Protocol 3000...
  • Page 64 Set / Get: ~nn@VMUTESPoutput_id,flagCR LF Parameters output_id – 1 (HDMI Out) flag – 0 (disable video on output), 1 (enable video on output), 2 (blank video) Response Triggers K-Config Example Disable the video output on HDMI Out: “#VMUTE 2,0”,0x0D VS-42UHD - Protocol 3000...
  • Page 65 If the port number you enter is already in use, an error is returned The port number must be within the following range: 0-(2^16-1) K-Config Example Set the Ethernet port protocol for TCP to port 12457: “#ETH-PORT TCP,12457”,0x0D VS-42UHD - Protocol 3000...
  • Page 66 NAME command. You can also get an assigned IP by direct connection to USB or RS-232 protocol port if available Consult your network administrator for correct settings K-Config Example Enable DHCP mode, if available: “#NET-DHCP 1”,0x0D VS-42UHD - Protocol 3000...
  • Page 67 Get IP address #NET-IP?CR Response ~nn@NET-IPSPip_addressCR LF Parameters ip_address – IP address, in the following format: xxx.xxx.xxx.xxx Response Triggers Notes Consult your network administrator for correct settings K-Config Example Set the IP address to 192.168.1.39: “#NET-IP 192.168.001.039”,0x0D VS-42UHD - Protocol 3000...
  • Page 68 Parameters net_mask - format: xxx.xxx.xxx.xxx Response Triggers The subnet mask limits the Ethernet connection within the local network Consult your network administrator for correct settings Notes K-Config Example Set the subnet mask to 255.255.0.0: “#NET-MASK 255.255.000.000”,0x0D VS-42UHD - Protocol 3000...
  • Page 69 13.3.5 EDID Handling Commands Additional EDID data functions can be performed via the VS-42UHD Web pages or a compatible EDID management application, such as Kramer EDID Designer (see www.kramerav.com/product/EDID%20Designer). Command Description CPEDID Copy EDID data from the output to the input EEPROM 13.3.5.1...
  • Page 71 SAFETY WARNING Disconnect the unit from the power supply before opening and servicing For the latest information on our products and a list of Kramer distributors, visit our Web site to find updates to this user manual. We welcome your questions, comments, and feedback.

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