XTP T UWP 202 Wallplate Transmitter • Installation and Operation 13
RS-232 and IR Over XTP Communication
The RS-232 and IR Over XTP connector is for pass-through transmission of serial signals,
such as projector control signals, and infrared data. To pass bidirectional serial command
signals between XTP-compatible devices, connect a control device to the three leftmost
poles (Tx, Rx, and G) of the 5-pole captive screw connector. To transmit and receive IR
signals, connect a control device to the three rightmost poles (G, Tx, and Rx). The
ground (G) pole is shared.
NOTE: RS-232 and IR data can be transmitted or received simultaneously
(see figure 12 below for wiring considerations).
Tx/Rx
Pins
Tx Rx
Rx Tx
Custom
IR Device
RS-232 Device
G
G
RS-232 IR
OVER XTP
Tx Rx G Tx Rx
Figure 12. Wiring the RS-232 and IR Over XTP Connector
ATTENTION: The length of exposed wires is critical.
• The ideal length is 3/16 inch (5 mm).
• Longer bare wires can short together.
• Shorter wires are not as secure in the connectors and could be pulled out.