Installation guide

VAR4 / VAR12 / VAR20 - Product Description
6.1 Audio Inputs
6.1.1 Audio Inputs
The Audio Input connections are implemented on a 9-way female D connector for each input. Each
connector provides balanced audio inputs and dedicated serial data connections for ASL Zoneable
Microphones (DMS, FMS, CMB ranges).
Pin No. Signal Description
1 AUDIO+ Balanced Audio -
2 AUDIO- Balanced Audio +
3 0V-SUPPLY 0V Supply
4 Not Connected
5 DATA DXN Microphone Data – (EIA RS485 19200 baud)
6 GND Common Ground
7 +SUPPLY +V Supply
8 Not Connected
9 DATA DXP Microphone Data + (EIA RS485 19200 baud)
DATA DXN
12345
6789
GND+SUPPLYDATA DXP
0V-SUPPLY
FEMALE
AUDIO+ AUDIO-
6.1.2 Music A+B
Music A and Music B are unbalanced stereo
inputs for background music sources using phono
connectors. The stereo signal is mixed to mono
internally.
Signal
Ground
Signal
Ground
L
R
Issue: 03 complete, approved
Page 46 of 68