AT-HDR-CAT-2
22
Controlling Audio Output
The AT-HDR-CAT-2 features a separate
AUDIO OUT
port on the rear panel. This port provides de-embedding and
conversion of two-channel LPCM audio streams to analog audio. Audio output volume can be controlled using API
commands or the built-in web server.
The included 5-pin captive screw block can be wired to support balanced audio using XLR connectors, or
unbalanced audio using RCA connectors.
*The
GND
signal, from the 5-pin captive screw connector on the
AT-HDR-CAT-2, should be tied to pin 1 on
both
XLR connectors.
*The
GND
signal, from the captive screw connector on the AT-HDR-CAT-2,
should be tied to
L-
and
R-
on the captive screw connector.
Audio Port Wiring
IMPORTANT:
The AT-HDR-CAT-2 will only de-embed two-channel LPCM audio. Down-mixing
mulitchannel audio to two-channel audio is not supported. In addition, video must accompany the
audio at all times. This product does not support audio-only (“free-run” mode) output.
Device Operation
GND
+
+
GND
1
2
2
3
3
GND
Balanced Audio (XLR)
Unbalanced Audio (RCA)
Channel
Signal (AT-HDR-CAT-2)
Pin (XLR)
R
-
3
R
+
2
--
GND*
1
L
+
2
L
-
3
Channel
Signal (AT-HDR-CAT-2)
Pin (RCA)
R
to GND*
--
R
+
+
--
GND
GND
L
+
+
L
to GND*
--
