_________________________________________________________________
Page
3
‐
2
GMA
347
Maintenance
Manual
View
of
J3471
connector
from
back
of
unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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78
Table
3
‐
1.
J3471
Pin
Assignments
Pin
Pin
Name
I/O
1
FAIL
SAFE
WARN
AUDIO
IN
In
2
RESERVED
‐‐
3
TEL
RINGER
AUDIO
IN
HI
In
4
TEL
RINGER
AUDIO
IN
LO
In
5
RESERVED
‐‐
6
ON
‐
SIDE
NAV
AUDIO
IN
HI
In
7
ON
‐
SIDE
COM
AUDIO
IN
HI
In
8
ON
‐
SIDE
COM
AUDIO
LO
I/O
9
PILOT
HEADSET
AUDIO
OUT
LEFT
Out
10
PILOT
HEADSET
AUDIO
OUT
RIGHT
Out
11
PILOT
HEADSET
AUDIO
OUT
LO
Out
12
CROSS
‐
SIDE
COM
AUDIO
IN
HI
In
13
CROSS
‐
SIDE
COM
AUDIO
LO
I/O
14
CROSS
‐
SIDE
NAV
AUDIO
IN
HI
In
15
DME
AUDIO
IN
HI
In
16
DME
AUDIO
IN
LO
In
17
MUSIC
IN
1
LEFT
In
18
MUSIC
IN
1
RIGHT
In
19
UNSWITCHED
AUDIO
IN
1
HI
In
20
UNSWITCHED
AUDIO
IN
2
HI
In
21
RESERVED
‐‐
22
RESERVED
‐‐
23
TEL
MIC
AUDIO
OUT
HI
Out
24
PASS
ICS
KEY*
In
25
ON
‐
SIDE
NAV
AUDIO
IN
LO
In
26
ON
‐
SIDE
COM
MIC
AUDIO
OUT
HI
Out
27
ON
‐
SIDE
COM
MIC
KEY*
Out
28
PILOT
MIC
AUDIO
IN
HI
In
29
PILOT
MIC
KEY*
IN
In
30
PILOT
MIC
IN
LO
In
31
PILOT
ICS
KEY*
In
32
CROSS
‐
SIDE
COM
MIC
AUDIO
OUT
HI
Out
33
CROSS
‐
SIDE
COM
MIC
KEY*
Out
34
CROSS
‐
SIDE
NAV
AUDIO
IN
LO
In
35
ADF
AUDIO
IN
HI
In
36
ADF
AUDIO
IN
LO
In
37
MUSIC
IN
1
LO
In
* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active).
Rev.
A
190
‐
00325
‐
02
