A.W. Communication Systems DRC1 Configuration Handbook - page 6
Manual is about: Desktop Radio Control Unit
of
24
Auxiliary Connector DB9F
Pin
Number
Signal
Notes
1
Auxiliary +12vDC
Limited to 500 mA ** see note
2
Audio Out 0
600
Ω
balanced
3
Audio In 0
600
Ω
balanced
4
Auxiliary PTT
Active Low
5
Ops Busy Signal/or Alarm
Active Low
6
Ground
7
Audio Out 1
600
Ω
balanced
8
Audio In 1
600
Ω
balanced
9
Ground
** The auxiliary supply has a total current capability of 500mA. The current draw from all
connectors when added together must not exceed 500mA. The output is protected by a
thermal auto-reset fuse.