Telex Audiocom ES4000A User Instructions page 27

Intercom expansion station
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Connector Pin Outs
PROGRAM INPUTS Connector
Connector Type: DB9F Female, 9-pin D-sub
Pin 1:
Common
Pin 2:
Channel 3 program in low
Pin 3:
Channel 4 program in low
Pin 4:
Channel 5 program in low
Pin 5:
Channel 6 program in low
Pin 6:
Channel 3 program in high
Pin 7:
Channel 4 program in high
Pin 8:
Channel 5 program in high
Pin 9:
Channel 6 program in high
CHANNEL 3-6 OUTPUTS Connector
Connector Type: DB15F Female, 15-pin D-sub
Pin 1
Channel 3 intercom audio input/output high
Pin 2
Channel 3 intercom audio input/output low
Pin 3
Common
Pin 4
Channel 5 intercom audio input/output high
Pin 5
Channel 5 intercom audio input/output low
Pin 6
Common
Pin 7
Common
Pin 8
Common
Pin 9
Common
Pin 10
Channel 4 intercom audio input/output high
Pin 11
Channel 4 intercom audio input/output low
Pin 12
Common
Pin 13
Channel 6 intercom audio input/output high
Pin 14
Channel 6 intercom audio input/output low
Pin 15
Power (30 VDC)
25

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