Tb4 - audio and low voltage control terminal block, P1 - front cover wire harness connections – GAI-Tronics 400-003 IEC / ATEX Zone 1 RigCom Station User Manual
Page 10
Pub. 42004-460A
Model 400-003 IEC/ATEX Zone 1 RigCom Station
Page: 10 of 16
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TB4 - Audio and Low Voltage Control Terminal Block
The following is a list of connections for the low voltage control and audio signal terminal block, TB4:
Name Pin
No.
Description
Aux Mic+
1
Positive terminal for auxiliary microphone (optional).
Aux Mic−
2
Negative terminal for auxiliary microphone (optional).
Ext Cont+
3
Talk/listen control signal for Master/Slave operation.
No connection in Common Line mode.
Ext Cont−
4
Ground reference for talk/listen control signal for Master/Slave operation.
No connection in Common Line mode or UNBAL audio configuration.
Shield
5
Ground reference for shield terminations.
Audio+
6
Positive of the audio line during 600-ohm or 15-kilohm termination
configuration.
Audio−
7
Negative of the audio page line during 600-ohm or 15-kilohm termination
configuration.
Footswitch+
8
Positive of optional auxiliary footswitch operating as local push-to-talk switch.
Footswitch−
9
Negative of optional auxiliary footswitch that operating as local push-to-talk
switch.
P1 - Front Cover Wire Harness Connections
Plug in the front cover wire harness connector at P1. Refer to Figure 8.
Figure 8.