190-01717-B1
G500/G600 TXi Part 23 AML STC Maintenance Manual
Rev. 1
Page 4-8
4.2.3
GDC 72
GDC 72 has a single connector:
•
J721/P721 78-pin female contact HD D-Sub
Figure 4-4 View of J721 Connector looking at GDC 72
J721/P721 Connector
Pin
Function
I/O
Pin
Function
I/O
1
ARINC 429 OUT 1A
OUT
40
RESERVED
--
2
ARINC 429 OUT 1B
OUT
41
RESERVED
--
3
ARINC 429 OUT 2A
OUT
42
ARINC 429 IN 1A
IN
4
OAT LO
IN
43
ARINC 429 IN 1B
IN
5
OAT HI
IN
44
ARINC 429 IN 2A
IN
6
OAT POWER
OUT
45
RESERVED
--
7
ARINC 429 OUT 1B
OUT
46
RESERVED
--
8
ARINC 429 OUT 3A
OUT
47
RESERVED
--
9
ARINC 429 OUT 3B
OUT
48
SIGNAL GROUND
--
10
RESERVED
--
49
ARINC 429 OUT 2A
OUT
11
RESERVED
--
50
ARINC 429 OUT 2B
OUT
12
RESERVED
--
51
RESERVED
--
13
RESERVED
--
52
RESERVED
--
14
AIRCRAFT POWER 1
IN
53
CONFIG MODULE POWER
OUT
15
SIGNAL GROUND
--
54
CONFIG MODULE DATA
I/O
16
AIRCRAFT POWER 2
IN
55
CONFIG MODULE CLOCK
OUT
17
RS232 OUT 2
OUT
56
DISCRETE IN 1*
IN
18
RS232 IN 2
IN
57
SYS ID 2*
IN
19
RESERVED
--
58
RESERVED
--
20
RESERVED
--
59
RESERVED
--
21
ARINC 429 OUT 3A
OUT
60
RESERVED
--
22
ARINC 429 OUT 3B
OUT
61
RESERVED
--
23
ARINC 429 OUT 2B
OUT
62
ARINC 429 IN 3A
IN
24
SIGNAL GROUND
--
63
ARINC 429 IN 3B
IN
25
RESERVED
--
64
ARINC 429 IN 2B
IN
26
SIGNAL GROUND
--
65
RESERVED
--
27
ARINC 429 OUT 1A
OUT
66
RESERVED
--
28
RESERVED
--
67
RESERVED
--
29
RESERVED
--
68
SIGNAL GROUND
--
30
SIGNAL GROUND
--
69
RS 232 OUT 1
OUT
31
SIGNAL GROUND
--
70
RS 232 IN 1
IN
32
SIGNAL GROUND
--
71
RESERVED
--
33
SIGNAL GROUND
--
72
RESERVED
--
34
AIRCRAFT GROUND 1
--
73
SIGNAL GROUND
--
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30
31 32 33 34 35 36 37 38 39
40
41 42
43 44 45 46 47 48 49 50
51 52 53 54 55 56
57
58 59
60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78