Page A-14
G900X/G950 Installation and Maintenance Manual – Pinouts
Revision D
190-00719-00
A.2.3.8 Telephone I/O
Pin Name
Connector
Pin
I/O
TEL RINGER AUDIO IN HI
P3471
3
In
TEL RINGER AUDIO IN LO
P3471
4
In
TEL MIC AUDIO OUT HI
P3471
23
Out
TEL MIC AUDIO OUT LO
P3471
62
--
TEL AUDIO IN HI
P3471
42
In
TEL AUDIO IN LO
P3471
43
--
A.2.3.9 AUX, DME, and ADF Audio
Pin Name
Connector
Pin
I/O
AUX AUDIO IN HI
P3471
74
In
AUX AUDIO IN LO
P3471
75
--
DME AUDIO IN HI
P3471
15
In
DME AUDIO IN LO
P3471
16
--
ADF AUDIO IN HI
P3471
35
In
ADF AUDIO IN LO
P3471
36
--
A.2.3.10 Failsafe Audio
Pin Name
Connector
Pin
I/O
FAIL SAFE WARN AUDIO IN
P3471
1
In
A.2.4
J3472 Connector Pin Assignments
A.2.4.1 Aircraft Power and Lighting
Pin Name
Connector
Pin
I/O
AIRCRAFT POWER 1
P3472
53
In
AIRCRAFT POWER 1
P3472
55
In
AIRCRAFT POWER 2
P3472
30
In
AIRCRAFT POWER 2
P3472
32
In
POWER GROUND
P3472
69
--
POWER GROUND
P3472
71
--
POWER GROUND
P3472
14
--
POWER GROUND
P3472
16
--
GMA REMOTE POWER OFF
P3472
27
In
The power-input pins accept 14/28 VDC. AIRCRAFT POWER 2 is for connecting to an alternate power
source, such as on aircraft with two electrical buses.
Pins 53 and 55 of J3472 are internally connected to form AIRCRAFT POWER 1. Pins 30 and 32 of
J3472 are internally connected to form AIRCRAFT POWER 2. AIRCRAFT POWER 1 and AIRCRAFT
POWER 2 are “diode ORed” to provide power redundancy.