Instruction Manual

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Key Digital RS-232 Cable Pinout Charts
Model Wire DB9 Pin Signal
KD-3.5FDB96
3.5mm Stereo to Female DB9 (sold separately)
Red 2 TxD
White 3 RxD
Black 5 Ground
Green N/C NA
KD-3.5FDB96 with 3.5mm TRS Connector KD-3.5FDB96 after stripping wire
Model Wire DB9 Pin Signal
KD-3.5MDB96
3.5mm Stereo to Male DB9 (sold separately)
Red 2 TxD
Black 3 RxD
Shield 5 Ground
KD-3.5MDB96 with 3.5mm TRS Connector KD-3.5MDB96 after stripping wire
IR
Bi-directional IR control extension is supported. IR can not be used at the same time as RS-232.
» “IR In” port on the Tx unit extends to the “IR Out” port of the Rx unit
» “IR In” port on the Rx unit extends to the “IR Out” port of the Tx unit
› IR In:
The IR In port is different for the Tx and Rx units. The Tx unit’s IR In port supports a Serial IR
(hardwired) connection. The Rx unit’s IR In port supports an IR Sensor.
» Tx Unit / Serial IR:
» A fixed 5V input signal on 2 phoenix pins
» Signal and ground are required
» Typically fed from a dedicated control system or an IR distribution block
» Rx Unit / IR Sensor:
» IR Sensors can be connected directly into the Rx unit’s IR In port, without the need for an
external IR distribution block
» IR signal on the Tip, with 5V powering of the IR sensor on the power wire.
IR Sensor / IN Pinout Wire Signal
Red 5V Power
White IR Signal
Black Ground
› IR Out:
» Pass-through from signal of corresponding IR In port or bi-directional RS-232, as determined by
the position of the Control Rotary
» Driving power: 5V with 32mA minimum current
» Typically connected with an IR emitter
IR Emitter / OUT Pinout Wire Signal
Dashed/Marked IR Signal
Solid/Black Ground
IR Cabling
Your KD-X222PO includes an IR Sensor and an IR Emitter.
Signal acceptance: The IR Sensor receives signals from a 90° angle at up to 30 ft. away. It accepts a
maximum IR burst frequency of 55kHz.
Only the included IR sensors are compatible with the KD-X222PO. Third-party IR Sensors may not be
compatible.
The included IR Sensor.
Connects to the IR In port on the Rx unit.
The included blinking-type IR Emitter.
Connects to the IR Out port.