Installation Guide
AT-OMNI-121
5
If using non-tinned stranded wire, press the orange tab, above the terminal, while inserting
the exposed wire
NOTE:
Unbalanced XLR audio requires Pin 1 and Pin 3 to be connected.
The same wiring applies to both captive screw and push spring connectors.
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
L
R
DC 48V
RX
TX
1
HDMI OUT
Push tab
to unlock
GND
Side View
Side View
-
+
GND
+
-
Unbalanced RCA audio
1
2
3
1
2
3
GND
GND
+
-
+
-
1
2
3
1
2
3
GND
GND
+
-
+
-
Balanced XLR audio
Unbalanced XLR audio
The AT-OMNI-121 provides the ability to embed 2-channel analog audio on the
HDMI OUT
port
or de-embed HDMI audio on the
AUDIO
OUT
port. De-embedded HDMI audio is downmixed to
2-channel PCM. This step is optional.
•
If
AUDIO IN
or
AUDIO OUT
will be used, then connect the included 5-pin captive screw
connectors, as shown below.
•
If both
AUDIO IN
and
AUDIO OUT
ports will be used, then connect the included 5-pin push
spring connectors, as shown below.
Audio
2-channel analog audio output (bottom)
2-channel analog audio input (top)
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
L
R
DC 48V
RX
TX
1
HDMI OUT
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
L
R
DC 48V
RX
TX
1
HDMI OUT
IMPORTANT
:
Audio embedding and de-embedding, using the analog audio
outputs, requires the optional OmniStream power supply (AT-PS-48083-C).
