Extron electronics HDMI 201 User Manual page 29

RS-232 connector wiring
Figure 26 shows how to wire the RS-232 connector for non-Decora and Decora units.
Tx/Rx Connected RS-232
Pins Device Pins
Ground
Transmit pin on connected unit
Rx
Receive pin on connected unit
Tx
Figure 26. RS-232 Connector Wiring
CAUTION: The length of the exposed (stripped) copper wires is important. 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.
NOTES: • Do not tin the power supply leads before installing them in the direct
insertion connector. Tinned wires are not as secure in the connectors and
could be pulled out.
• The RS-232 connector can also transmit one-way modulated infrared (IR)
signals. See Modulated IR Pass Through Application.
HDMI 201 • Installation and Operation 25