Installation Procedures
2-18
560-0982-01 Rev L
GNS 480 (CNX80) Installation Manual
2.7.1.1
Main System Connector (P1)
The interface to external equipment is made through a standard male 37-pin D-sub connector near the
middle of the unit. The pin-out for the connector is defined in the following table.
Table 2-5. Main System Connector Pin-Out (P1)
Pin #
I/O Name
Description
Reference
1
I
Power +
Main Aircraft Power Input (+10 to +36 VDC)
2.8.1
2
I
Power Ground
Main Aircraft Power Ground
3
O
Serial Ground 2
RS-232 signal ground
2.8.10.1
4
I
RS-232 RxD1
RS-232 channel 1 serial data input
5
O
RS-232 TxD1
RS-232 channel 1 serial data output
6
O
RS-232 TxD3
RS-232 channel 3 serial data output
7
I
RS-232 RxD3
RS-232 channel 3 serial data input
8
O
RS-422 TxD4 +
RS-422 channel 4 serial data
9 --
RESERVED
RESERVED
10
O
RS-422 TxD4 -
RS-422 channel 4 serial data output -
2.8.10.1
11
I
RS-422 RxD4 +
RS-422 channel 4 serial data input +
12 --
RESERVED
RESERVED
13 --
RESERVED
RESERVED
14
I
COM Flip Flop In
COM Flip-Flop discrete input (active low)
2.8.9.2
15
I
UP Discrete In
Activate COM User list and scrolls up (active low)
2.8.9.5
16
I
Power +
Main Aircraft Power Input (+10 to +36 VDC)
2.8.1
17
O
Time Mark Out -
GPS 1 Pulse Per Second Output - (RS-422 Level)
2.8.11
18 --
RESERVED
RESERVED
19
O
Time Mark Out +
GPS 1 Pulse Per Second (RS-422 Level)
2.8.11
20
I
Power Ground
Main Aircraft Power Ground
2.8.1
21
I
RS-232 RxD2
RS-232 channel 2 serial data input
2.8.10.1
22
O
RS-232 TxD2
RS-232 channel 2 serial data output
23
O
Serial Ground 1
RS-232 signal ground
24 --
RESERVED
RESERVED
25
O
Serial Ground 3
RS-232 signal ground
2.8.10.1
26
I
RS-422 RxD4 -
RS-422 channel 4 serial data input -
27 --
RESERVED
RESERVED
28 --
RESERVED
RESERVED
29 --
RESERVED
RESERVED
30 --
RESERVED
RESERVED
31 --
RESERVED
RESERVED
32 --
RESERVED
RESERVED
33
I
DOWN Discrete In
Activate COM User list and scrolls down (active low)
2.8.9.5
34
I
VOR Flip Flop In
VOR Flip-Flop discrete input (active low)
2.8.9.3
35
I
Power + Out (NAV)
Main Power Output for NAV Receiver
2.8.1
36 --
RESERVED
RESERVED
37
I
Power Gnd Out (NAV) Main Power Ground Output for NAV Receiver
2.8.1
1
20
19
37
VIEW LOOKING AT REAR OF UNIT
Figure 2-8. 37-pin Connector
Summary of Contents for GNS 480
Page 1: ...GNS 480 CNX80 Color GPS NAV COM Installation Manual November 2008 560 0982 01 Rev L...
Page 10: ...Table of Contents viii 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Page 32: ...General Information 1 22 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Page 80: ...Installation Procedures 2 48 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Page 134: ...Periodic Maintenance 6 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Page 158: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...
Page 192: ...D 36 560 0982 01 Rev Notes...
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