Key Digital KD-X444SP, Quick Setup Manual, Page: 3 / 7

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Quick Setup Guide
CONNECT:
1. Begin with the Tx and Rx units and all input / output devices turned off with power
cables removed
2.
Connect your HDMI source to the input port of the Tx unit
3.
Connect your HDMI display to the output port of the Rx unit
4. Connect a CAT5e/6 cable between Tx and Rx unit. Use 568-B termination.
5. Connect IR emitter from the IR Out port of the Tx or Rx unit and mount over the IR receptor of
the device you wish to control.
6. IR Input is specific on the Tx and Rx unit.
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a. The Tx unit supports hard-wired / serial IR connections only with the following pinout:
IR In Tip Ring Sleeve
Serial IR IR In N/C Ground
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b. The Rx units supports connection with the included IR Sensor only. Mount the sensor in
a location to easily collect line of sight IR signals from remotes.
7. Connect RS-232 from your control system or computer.
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a. TxD from the Controller connects into RxD of the extender
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b. RxD from the Controller connects into TxD of the extender
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c. Ground from the Controller connects into Ground of the extender
8. BEFORE connecting power supply to power outlet, screw-in the power supply to the Tx or Rx
unit. AFTER all connections are made, plug-in power supply to power outlet
9. Power on source and display
Application Example
RS-232
RS-232
KD-X444SP Tx
4K/UHD
up to 50m
KD-X444SP Rx
HDMI
HDMI
CA
T5e/6
Video Source
4K 18G w/HDR
Control System
Display / Projector
IR
IR
IR Source
Remote