190-01878-02
GMA 342/345 Installation Manual
Rev. 5
Page 4-4
4.3 Aircraft Power
The GMA 342/345 has four pins for aircraft power bus inputs. Use one wire for each of the pins
connecting to the aircraft power and ground. Do not splice the power and ground pins at the unit and use
only one wire to aircraft power and ground.
23
MUSIC 1 IN LEFT
IN
24
MUSIC 1 IN RIGHT
IN
25
MUSIC 1 IN LO
--
26
MUSIC 2 IN LEFT
IN
27
MUSIC 2 IN RIGHT
IN
28
MUSIC 2 IN LO
--
29
FAILSAFE WARN AUDIO IN HI
IN
30
COPILOT ICS KEY*
IN
31
PILOT HEADSET AUDIO OUT RIGHT
OUT
32
COPILOT MIC AUDIO IN HI
IN
33
COPILOT MIC KEY* IN
IN
34
COPILOT MIC AUDIO IN LO
--
35
PASS 1 MIC AUDIO IN HI
IN
36
PASS 1 MIC AUDIO IN LO
--
37
PASS 2 MIC AUDIO IN HI
IN
38
PASS 2 MIC AUDIO IN LO
--
39
PASS 3 MIC AUDIO IN HI
IN
40
PASS 3 MIC AUDIO IN LO
--
41
PASS 4 MIC AUDIO IN HI
IN
42
PASS 4 MIC AUDIO IN LO
--
43
SPEAKER AUDIO OUT LO
--
44
SPEAKER AUDIO OUT HI
OUT
Table 4-3 Aircraft Power
Pin
Connector
Pin Name
I/O
8
J3402
AIRCRAFT POWER
IN
9
J3402
AIRCRAFT POWER
IN
10
J3402
POWER GROUND
--
11
J3402
POWER GROUND
--
Table 4-2 J3402 Pin Assignments
Pin
Pin Name
I/O
*Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active)
