190-00917-01
GMA 240 Installation Manual
Rev. D
Page 4-7
4.5.3 COM Audio and Mic Keys
4.5.4 Alert Audio I/O
4.5.5 AUX and NAV Audio Inputs
Table 4-9 COM Audion and Mic Keys
Pin
Connector
Pin Name
Description
I/O
12
P2401
COM 1 MIC KEY* OUT
Enables transmission on the
respective transceiver unit
OUT
30
P2401
COM 2 MIC KEY* OUT
OUT
9
P2401
COM 1 AUDIO IN HI
COM 1 Audio Input
IN
11
P2401
COM 1 MIC AUDIO OUT HI
COM 1 Audio Output
OUT
10
P2401
COM 1 AUDIO LO
Ground Reference for COM 1
--
13
P2401
COM 2 AUDIO IN HI
COM 2 Audio Input
IN
15
P2401
COM 2 MIC AUDIO OUT HI
COM 2 Audio Output
OUT
14
P2401
COM 2 AUDIO LO
Ground Reference for COM 2
--
*Denotes Active Low (Sinks current to ground when active)
Table 4-10 Alert Audio I/O
Pin
Connector
Pin Name
Description
I/O
31
P2401
ALERT 1 AUDIO IN HI
Alert 1 Audio Input
IN
32
P2401
ALERT 1 AUDIO IN LO
Ground Reference for Alert 1
--
44
P2401
ALERT 2 AUDIO IN HI
Alert 2 Audio Input
IN
15
P2402
ALERT 3 AUDIO IN HI
Alert 3 Audio Input
IN
43
P2401
ALERT 2,3 AUDIO IN LO
Ground Reference for Alert 2 & 3
--
Table 4-11 AUX and NAV Audio Inputs
Pin
Connector
Pin Name
Description
I/O
21
P2401
AUX1 AUDIO IN HI
AUX1 Audio Input
IN
22
P2401
AUX1 AUDIO IN LO
Ground Reference for AUX1 Input
--
7
P2401
AUX2 AUDIO IN HI
AUX2 Audio Input
IN
8
P2401
AUX2 AUDIO IN LO
Ground Reference for AUX2 Input
--
17
P2401
NAV 1 AUDIO IN HI
NAV 1 Audio Input
IN
18
P2401
NAV 1 AUDIO IN LO
NAV 1 Ground Reference
--
19
P2401
NAV 2 AUDIO IN HI
NAV 2 Audio Input
IN
20
P2401
NAV 2 AUDIO IN LO
NAV 2 Ground Reference
--
