Garmin G900X - Gdc 74 A; P741 Connector

Page A-58 G900X/G950 Installation and Maintenance Manual – Pinouts
Revision D 190-00719-00
A.5 GDC 74A
A.5.1 P741 Connector
View of J741 connector looking at rear of unit.
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Pin Pin Name I/O
1 CONFIG MODULE GROUND --
2 OAT PROBE POWER OUT Out
3 OAT PROBE IN HI In
4 OAT PROBE IN LO In
5 SIGNAL GROUND --
6 ADC SYSTEM ID PROGRAM* 1 In
7 SIGNAL GROUND --
8 DISCRETE IN* 6 In
9 SIGNAL GROUND --
10 RS-232 IN 1 In
11 RS-232 OUT 1 Out
12 SIGNAL GROUND --
13 RS-232 IN 2 In
14 RS-232 OUT 2 Out
15 SIGNAL GROUND --
16 RESERVED --
17 POWER GROUND --
18 POWER GROUND --
19 POWER GROUND --
20 POWER GROUND --
21 CONFIG MODULE POWER OUT Out
22 SPARE --
23 ARINC 429 IN 1 A In
24 ARINC 429 IN 1 B In
25 SIGNAL GROUND --
26 ARINC 429 OUT 1 A Out
27 ARINC 429 OUT 1 B Out
28 SIGNAL GROUND --
29 ARINC 429 OUT 2 A Out
30 ARINC 429 OUT 2 B Out
31 SIGNAL GROUND --
32 ARINC 429 OUT 3 A Out
33 ARINC 429 OUT 3 B Out
34 SIGNAL GROUND --
35 ARINC 429 IN 2 A In
36 ARINC 429 IN 2 B In
37 SIGNAL GROUND --
* Indicates Active Low