GMA 1347D Installation Manual Page 4-9
190-00303-21 Revision C
4.4 J3471 Connector Pin Assignments
This section covers the pin connections of J3471 only.
4.4.1 Mic Audio Inputs and Mic Keys
Table 4-11. Mic Audio Inputs and Mic Key Pin Assignments, J3471
Pin Pin Name Description I/O
29 PILOT MIC KEY* IN
Enables audio into the respective
transceiver unit
In
28 PILOT MIC AUDIO IN HI In
30 PILOT MIC IN LO
Pilot Mic audio input and ground reference
In
46 PASS 1 MIC AUDIO IN HI In
47 PASS 1 MIC AUDIO IN LO
Passenger 1 Mic audio and ground
reference
In
65 PASS 2 MIC AUDIO IN HI In
66 PASS 2 MIC AUDIO IN LO
Passenger 2 Mic audio and ground
reference
In
44 PASS 3 MIC AUDIO IN HI In
45 PASS 3 MIC AUDIO IN LO
Passenger 3 Mic audio and ground
reference
In
63 PASS 4 MIC AUDIO IN HI In
64 PASS 4 MIC AUDIO IN LO
Passenger 4 Mic audio and ground
reference
In
* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active).
4.4.2 Remote ICS Audio and ICS Keys
Table 4-12. Remote ICS Audio and ICS Keys Pin Assignments, J3471
Pin Pin Name Description I/O
31 PILOT ICS KEY* In
24 PASS ICS KEY*
Enables audio into the intercom system
In
21 REMOTE CREW ICS AUDIO IN HI In
22 REMOTE CREW ICS AUDIO IN LO
Remote crew ICS input and ground
reference
In
40 REMOTE PASS ICS AUDIO IN HI In
41 REMOTE PASS ICS AUDIO IN LO
Remote passenger ICS input and
ground reference
In
60 REMOTE CREW ICS OUT HI Remote crew audio output Out
5
REMOTE PASS ICS AUDIO OUT
HI
Remote passenger audio output Out
61 REMOTE CREW ICS OUT LO
Ground reference for remote passenger
and crew audio outputs
Out
* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active).
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