190-01007-01
GTN 725/750 Maintenance Manual
Rev. 5
Page A-2
A.1 J1001 Main Connector - Main Board
(View looking at rear of unit, Pin 1 is top right)
J1001
(GTN)
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
62
61
60
59
58
57
56
55
54
53
52
51
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
12
19
20
21
25
24
23
22
18
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
50
49
48
47
46
45
Pin
Pin Name
I/O
1
MAIN OBS ROTOR H (GND)
--
2
MAIN OBS ROTOR C
Out
3
TIME MARK OUT A
Out
4
AUDIO OUT HI
Out
5
RS-232 OUT 4
Out
6
RS-232 OUT 3
Out
7
RS-232 OUT 2
Out
8
RS-232 OUT 1
Out
9
ARINC 429 OUT 2A
Out
10
ARINC 429 OUT 1A
Out
11
MAIN +TO OUT
Out
12
MAIN VEUP OUT
Out
13
MAIN LATERAL SUPERFLAG OUT
Out
14
OBS ANNUNCIATE* [1]
Out
15
GPS ANNUNCIATE*
Out
16
OBS MODE SELECT* [1]
In
17
LIGHTING BUS 1 LO
In
18
LIGHTING BUS 1 HI
In
19
AIRCRAFT POWER
In
20
AIRCRAFT POWER
In
21
MAIN OBS STATOR D
In
22
TIME MARK OUT B
Out
23
AUDIO OUT LO
Out
24
RS-232 IN 4
In
25
RS-232 IN 3
In
26
RS-232 IN 2
In
27
RS-232 IN 1
In
28
ARINC 429 OUT 2B
Out
29
ARINC 429 OUT 1B
Out
30
MAIN +FROM OUT
Out
31
MAIN VEDOWN OUT
Out
32
MAIN VERTICAL SUPERFLAG OUT
Out
33
WAYPOINT ANNUNCIATE* [1]
Out
34
TERMINAL ANNUNCIATE* [1]
Out
35
TAWS AUDIO ACTIVE OUT* [1]
Out
