3
Installation Guide
AT-OME-ST31A
The AT-OME-ST31A provides an
RS-232
port which can be used to control the unit or allow
command to pass through to a downstream device. Additionally, RS-232 commands can be
transmitted over HDBaseT to a PoE-compatible receiver unit.
NOTE:
Typical DE-9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for
ground. On some devices functions of pins 2 and 3 are reversed.
RS-232 Connector
GND
RX
TX
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of the RX, TX, and GND wires.
3. Insert the TX, RX, and GND wires into correct terminal using the included 3-pin captive
screw connector.
Audio Output Connector
The
AUDIO OUT
connector on the AT-OME-ST31A provides the ability to de-embed audio to
an audio output device. Connect either balanced or unbalanced audio inputs, as shown below,
using the included 5-pin captive screw connector block.
Balanced audio connections use two signal wires and a ground to minimize interference in audio
signals. Unbalanced audio connections use one signal wire and a ground, and are used if system
components don’t support balanced signals.
2
1
3
2
1
3
GND
GND
-
+
Rear View
Rear View
-
+
GND
Side View
Side View
-
+
GND
+
-
Balanced Audio using XLR Connectors
Unbalanced Audio using RCA Connectors
