Clear-Com AB-120 - Manual (Page 20)

Clear-Com Communication Systems
AB-120 Announcer Console Instruction Manual
1 - 1 4
Channel Select Switch = ‘1’
Setting Jumpers
Setting Dip Switches
Wiring of Connectors
The pinout for the intercom XLR-3 connector is as follows:
• Pin 1 = ground
• Pin 2 = intercom audio 1 and +30 volts power
• Pin 3 = intercom audio 2
The pinout for the IFB XLR-3F connector is as follows:
• Pin 1 = ground
• Pin 2 = audio 1
• Pin 3 = audio 2
JP1 1-2 Unterminate intercom line
JP-5 1-2 Power intercom line
JP-7 2-3 RTS Intercom Level and JP1 on the option
board if used
JP-8 Mic output Set per chart in a following section
JP-9 Mic Pre’p
gain Set per chart in a following section
JP-10 Mic Pre’p
gain Set per chart in a following section
JP-11 Mute Set per chart in a following section
S2 Left Ear Select S3 Right Ear Select
1 open 1 open
2 open 2 open
3 close 3 open
4 open 4 open
5 open 5 close
6 open 6 open
7 open 7 open
8 open 8 open