Analog Stereo Audio Input And Output Connectors; Symmetrical Analog Stereo Audio - Lightware MX-FR9 User Manual

3.7.3. Analog stereo audio input and output connectors

Some interface boards have standard RCA receptacle for analog stereo audio inputs and
outputs. Inputs and outputs work with standard line-in and line-out voltage levels.
RCA plug (left channel)
Info Plugs and sockets on consumer equipment are conventionally color-coded by
CEA/CEDIA-863-B (ANSI) to aid correct connections. According to the standard
Lightware uses red colored RCA connectors for right channel of analog stereo audio
signals and white colored RCA connectors for left channel of analog stereo audio signals.

3.7.4. Symmetrical analog stereo audio

5 pole Phoenix connector is used for symmetrical analog audio (line in/out). Some I/O
boards use this connector as a configurable input or output. Always check if this
connector is configured as an output or input to prevent connecting two outputs together.
Asymmetrical audio signals can be connected as well. For asymmetrical output, connect
only + and ground. For asymmetrical input connect + and ground to the source and
connect – to the ground.
Compatible plug type:
Phoenix® Combicon series (3.5mm pitch), type: MC 1.5/5-ST-3.5,
order number: 1840395
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6
5
4
Nr.
1
2
3
4
5
6
Table 3-6. RCA connector pin assignments for analog audio
1 2 3 4 5
00 00
00 00
RCA receptacles
Name
Right channel input or output
Plastic insulator
GND
Left channel input or output
Plastic insulator
GND
Pin nr. Signal
1 Left +
2
Left -
3 Ground
4 Right -
5 Right +
Section 3. Controls and connections
3
2
1
RCA plug (right channel)