Key digital KD-Pro4x1X-2 HDMI Switcher Instruction Manual

: June 15, 2024
: Key Digital

Key digital KD-Pro4x1X-2 HDMI Switcher

Product Information

Specifications

Product Model: KD-Pro4x1X-2
Inputs: 4 HDMI
Output: 4 HDMI
Video Resolution: 4K
Bandwidth: 18Gbps
Audio Output: Analog and Digital
Control Options: TCP/IP, RS-232, IR, KD-App

About KD-Pro4X1X-2
The KD-Pro4X1X-2 is a professional-grade HDMI switcher that allows you to connect up to four HDMI sources and switch between them to display on up to four HDMI displays. It supports 4K video resolution and has a bandwidth of 18Gbps. The switcher also features analog and digital audio de-embedding, allowing you to connect audio outputs to amplifiers or receivers.

Key Features

4 HDMI inputs and 4 HDMI outputs
Supports 4K video resolution
18Gbps bandwidth for high-quality video transmission
Analog and digital audio de-embedding

Additional Features

Web UI for easy configuration and control
Auto-switching between HDMI sources
TCP/IP and RS-232 commands for advanced control options
Compatible with KD-App for control via mobile devices

Accessories
The KD-Pro4X1X-2 comes with the following accessories:

Power supply
Remote control

Product Usage Instructions

Quick Setup Guide
Before starting the setup process, make sure all devices, including the KD- Pro4X1X-2, source devices, display devices, audio system, and any other peripherals are powered off.

Connect

Connect the HDMI sources to the input ports of the KD-Pro4X1X-2.
Connect the HDMI displays to the output ports of the KD-Pro4X1X-2.
Connect analog and/or digital audio outputs from the KD-Pro4X1X-2 to amplifiers or receivers.
Connect the control system using TCP/IP, RS-232, or IR control. For KD-App control and/or IP control, connect the TCP/IP port to the network. Plug in the power supply to the KD-Pro4X1X-2 and then to a power outlet.
(Optional) If integrating a Programming-Free Presentation System with KD-Amp220 and/or KD-CamUSB, refer to the Programming-Free Presentation System Wiring section in the manual.

Configure

Use the EDID rotary dial on the KD-Pro4X1X-2 to choose the desired handshake (video resolution and audio format information) that will be provided to the connected source.
In the network settings section of the properties window, enter the desired IP settings such as IP address, subnet mask, gateway, and port number.
Enter the desired name for the KD-Pro4X1X-2.
Save the settings.

Control Option 1: Control via Remote Control
To control the KD-Pro4X1X-2 using the remote control:

Ensure the remote control is within the line of sight of the KD-Pro4X1X-2.
Use the buttons on the remote control to switch between HDMI sources and control other features of the system.

Control Option 2: Control via KD-App, KDMS ProTM
To control the KD-Pro4X1X-2 using KD-App or KDMS Pro:

Connect and configure your KD-Pro4X1X-2 as described in the Connect & Configure sections of the manual.
Download and open KD-App or KDMS Pro on your iOS device or PC.
Ensure the iOS device or PC is on the same network as the KD-Pro4X1X-2.
Perform a network scan in KD-App/KDMS Pro and select the unit.
Select and control the selected KD-Pro4X1X-2.
Enter the Video Switching, Camera Control, and/or Audio Control tabs to control the respective features of the system. Note that the Camera and Audio tabs are only visible if those control settings have been applied.
(Optional) To enter end-user mode in KDMS Pro, type CTRL + ALT + N after selecting the unit in the software.

FAQ

Q: Where can I find the latest product documentation and software downloads?
A: You can find the latest product documentation, firmware, control drivers, and software downloads on the Key Digital website at www.keydigital.com.
Q: Can I control more than two cameras with the KD-Pro4X1X-2?
A: Yes, you can control more than two cameras with the KD-Pro4X1X-2. However, it will require the use of active third-party RS-232 signal distribution. The maximum supported number of cameras is seven.
Q: What should I do if I need further assistance?
A: If you need further assistance with the KD-Pro4X1X-2, please refer to the warranty information in the manual or contact Key Digital customer support.

Operation Manual
Please visit www.keydigital.com for the latest product documentation, firmware, control drivers and software downloads. Product features and specifications are subject to change without notice

Always follow the instructions provided in this Operating Manual.

About KD-Pro4X1X-2

Key Digital® KD-Pro4x1X-2 is a 4K/18G HDMI switcher with analog and digital audio de-embedding, auto-switching, web UI and iOS app-ready control. Designed for professional audio video installations in conference rooms, huddle spaces, classrooms, theater and gaming spaces, KD-Pro4x1X-2 enables multiple video sources to connect to a single video display while analog (3.5mm & balanced/unbalanced) and digital (optical & PCM) audio de-embed ports may feed audio of the selected source into and amplifier, DSP, or sound bar. KD- Pro4x1X-2 supports all SD, HD, VESA and Ultra HD/4K video standards with HDR header information included in a variety of 4K EDID handshakes. In addition to IR, RS-232, and TCP/IP control, KD-Pro4x1X-2 can also be controlled via trigger voltage and boasts a programming-free presentation system capability when integrated with KD-Amp220 and/or KD-CamUSB and controlled via Web UI or free Key Digital iOS app.

Key Features

HDMI Switching: 4 HDMI sources to 1 HDMI output/display
Ultra HD/4K: Supports up to 4096×2160 or 3840×2160 24/25/30/60hz at 4:4:4 (signals up to 18Gbps bandwidth)
Audio De-embedding®: Audio of the selected HDMI input is de-embedded at the analog (3.5mm stereo & L/R balanced/unbalanced) and digital (optical & PCM) connectors
Key Digital® App Ready: Scan & detect population for pre-built GUI and TCP/IP control via Key Digital® App
Auto-Switching: Automatic selection of newly detected source and switching from newly disconnected source via hot plug detection voltage when enabled
Surround Audio Support: DTS-HD Master Audio™, DTS:X®, Dolby® TrueHD, Dolby Atmos®
Programming-Free Presentation System: Add KD-Amp220 and/or KD-CamUSB as desired and setup in KDMS Pro for a complete user interface in the web UI and KD iOS App including AV switching, volume control with microphone mix, and PTZ web cam control for an all-in-one user-friendly system.
Control: Front panel button, serial IR, optical IR, RS-232, trigger in, and TCP/IP controllable with web UI and KD-App ready

Additional Features

Key Digital® App & KDMS® Pro Ready: Scan & detect population for pre-built GUI and TCP/IP control via Key Digital® App and Key Digital Management Software™ Pro (KDMS™ Pro) PC setup Software
IP to RS-232 Command forwarding: Commands received on the TCP/IP port may be output on the RS-232 port for controlling Key Digital KD-Amp220, KD-CamUSB, or third-party RS-232 controllable devices with ASCII format commands.
HDCP Licensing: Fully licensed and compatible with HDCP 2.2
HDR10 and Dolby Vision: More life-like images through a greater range of luminance levels
Resolution Support: Supports all SD, HD, and VESA (VGA, SVGA, XGA, WXGA, SXGA, UXGA) up to 4096x2160p
Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:4:4/8 bit
Full Buffer System™: Manages TMDS re-clocking / signal re-generation, HDCP authentication to source & display, and EDID Control handshake
EDID Management: Internal library with 15 internal EDID handshakes including 4K with HDR in addition to native EDID data copied from the output/display 1
TMDS re-clocking: Support for long HDMI connectivity using Key Digital® HDMI cables

Accessories

Power supply, SK01T-0500100Z 5V/1A DC power jack, screw-in type
(2) Rack Ears, 1x long, 1x short for mounting in full-width rack
IR Remote Control, model KD-RMSWPROK
(2) 6-pin terminal block
USB Setup Cable, USB Micro to USB A

Quick Setup Guide

Begin with the KD-Pro4X1X-2, all source, display devices, audio system, and any other connected peripherals powered off.

Connect

Connect HDMI sources to the input ports.
Connect HDMI displays to the output ports.
Connect analog and/or digital audio outputs to amplifiers/receivers.
Connect Control System. For KD-App control and/or IP control from a control system or PC, connect. TCP/IP port to network. RS-232 and IR control may also be utilized.
Connect Power Supply. Screw in the power supply to KD-Pro4x1X-2, then plug in to the power outlet.
Connect from your PC using the USB micro port on the face of the unit to begin the configuration steps.
(Optional) If integrating in a Programming-Free Presentation System with KD-Amp220 and/or KD-CamUSB, refer to the Programming-Free Presentation System Wiring section.

Configure

EDID
Use the EDID rotary dial to choose the desired handshake (video resolution and audio format information) that will be provided to the connected source.

Configure KD-PRO4X1X-2 with Key Digital Management Software Pro (KDMS Pro). Download HERE

Open the Key Digital® Management Software™ Pro software and perform a USB scan (fig. 1)
Choose the detected device from the Devices window (fig. 2a)
In the Network Settings section of the Properties window, enter the desired IP settings (fig. 2b)
- IP Address (default is 192.168.1.239)
- Subnet Mask (default is 255.255.255.0)
- Gateway (default is 192.168.1.1)
- Port (default is 23)
- Note: If using KD-App, please do not change the port number.
Enter the desired name for the KD-Pro4x1X-2. Ie “HDMI Switch” or “Conference Room”
Save (fig. 2d).
If using the Key Digital iOS app (AKA KD-App), Web UI, or other 2-way control systems, set the desired Input/Output names by entering the Input/Output Settings section of the properties window, and selecting the Change Input/Output Name button (fig. 3a), selecting the desired input/output and entering the name (fig. 3b).
If utilizing the Programming-Free Presentation System, choose the quantity of KD-CamUSB cameras needed to control (fig 4a) and apply (fig 4b), then choose the KD-AMP220 Control selection box (fig. 5a) in the Audio/Video properties section. To control the mix level of KD-AMP220’s microphone input, choose the selection box for Microphone Control (fig. 5b)
- Note: Controlling more than two cameras will require the use of active third-party RS-232 signal distribution. A maximum of seven cameras is supported.

Control

Option 1: Control via Remote Control

Option 2: Control via KD-App, KDMS Pro™
KD-Pro4x1X-2 is controllable by Key Digital’s user-friendly iOS App (downloadable in the App Store) or Key Digital® Management Software™ Pro (downloadable here).

Connect and Configure your KD-Pro4x1X-2 as described in the Connect & Configure sections
Download and open KD-App and/or KDMS™
Ensure the iOS device and/or PC computer are on the same network with KD-Pro4x1X-2
Perform a network scan in the KD-App/KDMS™ and select the unit.
Select and control the selected KD-Pro4x1X-2.
Enter the Video Switching, Camera Control, and/or Audio Control tabs to control the respective features of the system. The Camera and Audio tabs are only visible if those control settings have been applied.
(Optional) To enter end-user mode in KDMS Pro, type CTRL + ALT + N after selecting the unit in the devices tree. This provides a view without any configuration settings visible.

Key Digital App on the App Store

Option 3: Control via web UI
Access KD-Pro4x1X-2’s web UI from any phone, tablet, or PC. The web UI shows the input, output, and unit name for a user-friendly experience and the Web UI may also be used to integrate and control the KD-CAMUSB PTZ webcam and KD- AMP220 amplifier via RS-232 to create a complete system with HDMI switching, volume control, microphone level mix, camera PTZ and preset control.

Connect and Configure your KD-Pro4x1X-2 as described in the Connect & Configure sections
Ensure the PC, phone, or tablet are on the network with KD-Pro4x1X-2
Enter the IP Address of the KD-Pro4x1X-2 unit into the web browser search bar. The default IP address is 192.168.1.239.
Enter password. The default password is “admin”
Use the web UI to control switching
Press the Settings gear icon button to access naming, control, and network settings.
Enter the Video Switching, Camera Control, and/or Audio Control tabs to control the respective features of the system.

NOTES:

See the Programming-Free Presentation System Wiring section for RS-232 wiring instructions for optional Camera and Amplifier control wiring.
If setting Camera and/or Audio Control for the system in the Web UI, you must also manually send command SPCRSB3 to the KD-Pro4x1X-2 to manually set the baud rate to 9600 as required. Alternatively, setting Camera and/or Audio Control in KDMS will automatically set the baud rate as required.

Option 4: Control via professional control system
KD-Pro4x1X-2 allows control over the serial interface for bi-directional communication.

For RS-232 control use pins 4, 5, and 6 of the Unit Control port. The Baud Rate is 57,600
For TCP/IP control the default static IP address is 192.168.1.239, with port 23.
KD-Pro4x1X-2 supports KD’s standard matrix protocol, so if you have controlled a KD switcher with a third-party control system before, you will likely have success with the same driver/module.
- Switching HDMI AV + External Audio together
1. SPOxxSIyy xx = output (01), yy = input (01-04)
2. SPOSIyy xx = output (01-04), yy = input (01-04)
A carriage return is required at the end of each string. See the TCP/IP and RS-232 Commands section for full command set and protocol.

Test for proper operation of the unit and cables in your system before permanently securing the unit for final installation. Ensure that you leave enough ventilation space to provide sufficient airflow and cooling.

Application Example

Conference Room AV switching system with Key Digital amplifier and PTZ webcam integrated and controlled via web UI without any programming required.

Connections, Buttons, and LEDs

REAR CONNECTIONS and ROTARY

HDMI Inputs (4)

The 4 HDMI inputs are located on the left side of the back panel.
Blue LED illuminates solid to indicate an active HDMI signal is incoming.

HDMI Output

1 HDMI located on the right-center of the back panel.
Blue LED illuminates solid when Hot Plug Detection (HPD) is received from the connected display /output device.

HDMI Input & Outputs Port Specifications

Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps signals
- See Supported standard 4K Video Formats table
Supports HDR10
Compliant with HDCP 2.2 and previous
Supports lossless compressed audio formats including Dolby® TrueHD, Dolby® Digital Plus, Dolby Atmos®, and DTS-HD Master Audio™, DTS:X®, Dolby® TrueHD, Dolby Atmos®
Does not support CEC
CEC pass-through from display to selected HDMI source
For Display Port sources/monitors, use active converters

Supported standard 4K Video Formats

EDID Handshaking Rotary

EDID authentication is provided from the unit to the selected input/source.
The EDID file (AKA “handshake” is selected using the EDID rotary on the unit and provides a list of compatible video and audio formats as well as digital data, informing the source device what it should output.
Most sources will comply with a new EDID file without a power-cycle, but devices do behave differently.
Adjustments may speed up sync time during source selection.

Balanced / Un-balanced Analog Audio Output:

6-pin phoenix connector
Provides 2ch balanced or un-balanced analog audio output from the selected HDMI input source
The Pin assignment for the audio is as follows:
- Left + is Pin 1; Left – is Pin 3; Left Ground is Pin 2.
- Right + is Pin 4; Right – is Pin 6; Right Ground is Pin 5.
For un-balanced audio, use the + and Ground pins of each channel
Drives audio signals up to 2VRMS with a sampling rate of 192KHz

L/R Analog Audio Output:

3.5mm stereo jack with de-embedded audio from the selected HDMI source
Drives audio signals up to 1 VRMS with a sampling rate of 192KHz
Automatically mutes if incoming audio format is not PCM 2ch

Optical Digital Audio Output

Provides digital audio output from the selected HDMI input source.
Supports PCM, SPDIF (IEC 60958), Dolby Digital®, and DTS™ up to 5.1 / 6.1
Compatible with sampling rates up to 96KHz

PCM Digital Audio Output

Provides digital audio output from the selected HDMI input source.
Supports PCM, SPDIF (IEC 60958), Dolby Digital®, and DTS™ up to 5.1 / 6.1
Compatible with sampling rates up to 96KHz

Note for All Audio De-Embed Ports

There are no volume or tone control features
There are no format conversion features. For example, to achieve 2ch analog audio output, the selected HDMI input source audio format must be 2ch.

TCP/IP Unit Control: Used for unit control from a control system and/or PC

The default static IP address is 192.168.1.239, port 23
Connect the ethernet cable from the KD-Pro4x1X-2 to a network router or connect a straight-through cable directly from a PC
Unit configuration, control, and firmware updates are achieved with Key Digital Management Software™ Pro (KDMS™ Pro) downloaded HERE.
See TCP/IP and RS-232 Commands section for full API

Main Control Port: Used for unit control from a control system and/or PC

6-Pin Terminal Block for Trigger In, IR and RS-232
Pin out:
- Pin 1 = Trigger In
- Pin 2 = IR In
- Pin 3 = IR/Trigger Ground
- Pin 4 = RS-232 Tx Data
- Pin 5 = RS-232 Ground
- Pin 6 = RS-232 Rx Data
See TCP/IP RS-232 Commands section for full API

FRONT CONNECTIONS, BUTTONS, SWITCHES

Service USB (1):

Micro USB port
Used for configuration and control from PC via KDMS Pro, or third-party control terminals
Used for firmware updates (consult with Key Digital tech support before updating firmware).
- Note: After updating firmware, all unit settings are restored to defaults except IP information. Please collect all customized settings info before loading firmware.
Supports USB driver for Windows, Mac
Will register as “Prolific USB-to-Serial Comm Port in Device Manager
Can be used as RS-232 control port. Baud rate is 115,200.

Forced HPD Troubleshooting Tool:

When ON, the Hot Plug Detection voltage is fixed to the high state to the connected display.
Standard HPD behavior when set to OFF position.

Input Select Button:

Used to choose which connected source is output to the connected display/device
Selecting a source with the Input Select button or IR remote will disable Auto Sensing Mode IF Auto Sensing has not been set via the front switch.
To factory reset the unit, press and hold for approx. 10 seconds until the front LEDs blink twice

Output Active LED:

Blue LED illuminates solid when Hot Plug Detection (HPD) is received from the connected display/output device.

Auto Sensing

ON: The unit will automatically select a newly detected active source. If the current source is disconnected or becomes inactive, auto-sensing will sequentially advance to an active input/source
OFF: The unit is in normal mode and regular switching functionality will occur
Manual source selection via push-button, IR, or RS-232 is still possible when enabled.
Auto Switching mode is only disabled via IR or RS-232. It is not disabled via manual source switching/selection.
IR Sensor: Mount IR an IR emitter from the control system or IR connection block. Refer to the IR Remote Control section for the correct button press sequence

Programming-Free Presentation System Wiring

KD-Pro4x1X-2 can forward commands received on the TCP/IP port to the RS-232 port to control Key Digital’s KD-CamUSB PTZ webcam and KD-Amp220 pre- amp/amplifier to build a complete integration system for presentation and meeting spaces without any programming. After enabling Camera and/or Amplifier control in the web UI or KDMS Pro, follow the below RS-232 wiring instructions.

Control originates on the TCP/IP network port from Web UI
IP is forwarded to RS-232 and output at the Unit Control TxD and Ground pins
For KD-Amp220 control, connect unit Control Port TxD and Ground into KD-AMP220 RS-232 port RxD and Ground. Do not connect from the Control Port RxD pin into the KD-AMP220 TxD pin.
For KD-CAMUSB control, connect unit Control Port TxD and Ground into KD-CAMUSB RS-232 port RxD and Ground. Do not connect from the Control Port RxD pin into the KD-CAMUSB TxD pin.

NOTES:

It is OK to insert 2 wires into KD-Pro4x1X-2’s RS-232 pins to achieve control of the Camera and the Amplifier.
Ensure that the TxD wire(s) do not contact the Ground wire(s)

TCP/IP and RS-232 Commands

TCP/IP Connection Protocol

Default IP address = 192.168.1.239
TCP/IP Port Number = 23
Notes: Use Raw / Other service, not Telnet.
- Maximum of two TCP/IP socket supported at a time.
- Simultaneous TCP/IP and web sockets are supported. Multiple web sockets are supported.

RS-232 Connection Protocol

Baud Rate = 57,600 bits per second as default
Data Bits = 8
Stop Bits = 1
Parity = None
Flow Control = None

Notes:

Carriage Return is required at end of each string
Commands are not case-sensitive
Spaces are shown for clarity; commands should NOT have any spaces
After a new command is received, a prompt should be sent back
HDMI Input selections via front button, IR remote, serial IR In, USB service port, trigger in, or RS-232 all respond with the following message via TCP/IP:
- [INPUT=x]
- x = the currently selected input (1-4)
- The response terminates with a carriage return followed by a line feed

Help Command (H). Returns entire API in readable format:

Status Command (STA). Returns unit status and settings in readable format:

IP to RS-232 Command Forwarding

KD-Pro4x1X-2 can forward ASII strings received on the TCP/IP port to the RS-232 port for one-directional control of RS-232 device(s) without using ports from a master controller.
This feature is how KD-Pro4x1X-2’s Programming-Free Presentation System is achieved and may also be utilized in other systems.
Send the command FWD(xxxxxxxxxxxxxxxx) to KD-Pro4x1X-2 via IP connection and the characters within the parenthesis will be output on the RS-232 port, with xxxxxxxxxxxxxxxx being a maximum of 16 supported ASCII characters.
Like all TCP/IP commands sent to KD-Pro4x1X-2, a carriage return is required at the end of the command.
Use KDMS Pro or PuTTy terminal to set KD-Pro4x1X-2’s baud rate to match the RS-232-controlled device.

Examples:

The TCP client device sends FWD(_SPI01AVU\r)\r
- _SPI01AVU\r string comes out via the RS-232 port
The TCP client device sends FWD(hello123@#)\r
- hello123@# string comes out via the RS-232 port
The TCP client device sends FWD(KD1CAMRP5_)\r
- KD1CAMRP5_ message comes out via the RS-232 port.

Supported ASCII Characters
The characters within the blue rectangles are supported

Specifications

Technical

Input (Each): 1 HDMI Connector, Type A, 19 Pin Female
Output (Each): 1 HDMI Connector, Type A, 19 Pin Female
Output (Each): Balanced/unbalanced line level audio on 6-pin terminal block. Drives 2VRMS line audio input with a sampling rate of 192KHz
Output (each): TOSlink optical digital audio following SPDIF format (IEC 60958). Supports sampling rate up to 192KHz
Video Bandwidth: TMDS bandwidth 18 Gbps
DDC Signal (Data): Input DDC Signal – 5 Volts p-p (TTL)
HDMI Video/Audio Signal: Input Video Signal – 1.2 Volts p-p
DDC Communication: EDID and HDCP Bi-directional buffering to Display and Source
Analog Audio Max Output Level: 4dBu on 150kΩ, DC coupling
Audio Bandwidth: 20Hz to 20kHz @ 0dBu
TND + Noise: 0.33% @0dBu @ 1kHz
Optical Max Output Level: 1Vpp on 75Ω, DC coupling
Wired IR: modulated IR signal input, 0-5V TTL or -10 to +10V
Power: 5V/1A, 5W, 100-240VAC, 50-60Hz, Interchangeable head, wall type, screw-in connector

General

Regulation: CE, RoHS, WEEE, EAC
Product Dimensions (LxWxH): 17.24 x 7.48 x 1.73” (438 x 190 x 44mm)
Product Weight: Weight: 5.62 lbs / 2.55 kg
Packaging Dimensions (LxWxH): 19.48 x 12.20 x 3.14” (495 x 310 x 80mm)
Packaging Weight: 7.94 lbs / 3.62 kg

Warranty Information

All Key Digital® products are built to high manufacturing standards and should provide years of trouble-free operation. They are backed by a Key Digital Limited 3-Year Product Warranty Policy. http://www.keydigital.com/warranty.htm.

Product Warnings & Safety Instructions

Important Product Warnings:

Connect all cables before providing power to the unit.
Test for proper operation before securing the unit behind walls or in hard-to-access spaces.
If installing the unit into a wall or mounting the bracket into the sheetrock, provide proper screw support with bolts or sheetrock anchors.

Safety Instructions:

Please be sure to follow these instructions for the safe operation of your unit.

Read and follow all instructions.
Heed all warnings.
Do not use this device near water.
Clean only with dry cloth.
Install in accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Only use attachments/accessories specified by the manufacturer.
Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way including:
- Damage to the power supply or power plug
- Exposure to rain or moisture

Power Supply Use:
You MUST use the Power Supply provided with your unit or you VOID the Key Digital® Warranty and risk damage to your unit and associated equipment.

521 East 3rd Street Mt. Vernon, NY 10553 • www.keydigital.com.

Key Digital, led by digital video pioneer Mike Tsinberg, develops and manufactures high-quality, cutting-edge technology solutions for virtually all applications where high-end video and control are important. Key Digita is at the forefront of the video industry for Home Theater Retailers, Custom Installers, System Integrators, Broadcasters, Manufacturers, and Consumers.