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Pin
23
RS422 OUT 1 B
24
RS422 OUT 1 A
25
RS422 IN 2 A
26
SIGNAL GROUND
27
SIGNAL GROUND
28
SIGNAL GROUND
29
SIGNAL GROUND
30
SIGNAL GROUND
31
SIGNAL GROUND
32
RADAR ALTITUDE ALERT OUT* 1
33
SIGNAL GROUND
34
SIGNAL GROUND
35
RS422 IN 1 B
36
SIGNAL GROUND
37
SIGNAL GROUND
38
RS422 OUT 2 A
39
SIGNAL GROUND
40
CONFIG MODULE DATA
41
SIGNAL GROUND
42
RS422 OUT 2 B
43
SIGNAL GROUND
44
USB VBUS POWER
45
USB GROUND
46
RS422 IN 1 A
47
CONFIG MODULE CLOCK
48
CONFIG MODULE GROUND
49
USB DATA HI
50
RESERVED (DO NOT CONNECT)
51
SIGNAL GROUND
52
ARINC 429 OUT 1 A
53
CONFIG MODULE POWER
54
USB DATA LO
55
ARINC 429 OUT 1 B
*Denotes active low (ground to activate)
GRA 5500 Installation Manual
Page 4-2
Table 4-1 P55001 Connector
Pin Name
I/O
Out
Out
In
--
--
--
--
--
--
Out
--
--
In
--
--
Out
--
Out
--
Out
Out
Out
--
In
Out
--
I/O
--
--
Out
Out
I/O
Out
190-01277-00
Rev. A
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