GMA 347 Installation Manual
Page 4-11
190-00325-01
Revision A
4.4.3 Com Audio and Mic Keys
Table 4-13. Com Audio and Mic Keys Pin Assignments, J3471
Pin
Pin Name
Description
I/O
27
ON-SIDE COM MIC KEY*
In
33
CROSS-SIDE COM MIC KEY*
In
78
COM 3 MIC KEY*
Enables audio into the respective
transceiver unit
In
7
ON-SIDE COM AUDIO IN HI
Com 1 audio input
In
26
ON-SIDE COM MIC AUDIO OUT HI
Com 1 audio output
Out
8
ON-SIDE COM AUDIO LO
Ground reference for Com 1 audio
--
12
CROSS-SIDE COM AUDIO IN HI
Com 2 audio input
In
32
CROSS-SIDE COM MIC AUDIO OUT HI
Com 2 audio output
Out
13
CROSS-SIDE COM AUDIO LO
Ground reference for Com 2 audio
--
58
COM 3 AUDIO HI
Com 3 audio input
In
77
COM 3 MIC AUDIO OUT HI
Com 3 audio output
Out
59
COM 3 AUDIO LO
Ground reference for Com 3 audio
--
* Denotes Active Low (Ground to activate).
4.4.4 Nav Audio
Table 4-14.
Nav Audio
Pin Assignments, J3471
Pin
Pin Name
Description
I/O
6
ON-SIDE NAV AUDIO IN HI
Nav 1 audio input
In
25
ON-SIDE NAV AUDIO IN LO
Nav 1 ground reference
--
14
CROSS-SIDE NAV AUDIO IN HI
Nav 2 audio input
In
34
CROSS-SIDE NAV AUDIO IN LO
Nav 2 ground reference
--
4.4.5 Headset Outputs
Table 4-15. Headset Outputs Pin Assignments, J3471
Pin
Pin Name
Description
I/O
9
PILOT HEADSET AUDIO OUT LEFT
Out
10
PILOT HEADSET AUDIO OUT RIGHT
Pilot headset audio output
Out
11
PILOT HEADSET AUDIO OUT LO
Ground reference for pilot headset
--
69
COPILOT HEADSET AUDIO OUT LEFT
Out
70
COPILOT HEADSET AUDIO OUT RIGHT
Copilot headset audio output
Out
71
COPILOT HEADSET AUDIO OUT LO
Ground reference for copilot headset
--
67
PASS HEADSET AUDIO OUT LEFT
Out
68
PASS HEADSET AUDIO OUT RIGHT
Passenger headset audio output
Out
48
PASS HEADSET AUDIO OUT LO
Ground reference for passenger
headset
--
