Garmin GNC 420A Installation Manual page 30

Pin Pin Name
37 ALTITUDE ALARM AUDIO HI (Not implemented at time of publication)
38 ALTITUDE ALARM AUDIO LO (Not implemented at time of publication)
39 LIGHTING BUS HI
40 LIGHTING BUS LO
41 GPS RS 232 OUT 3
42 GPS RS 232 IN 3
43 MAIN OBI CLOCK
44 MAIN OBI DATA
45 MAIN OBI SYNC
46 GPS ARINC 429 OUT A
47 GPS ARINC 429 OUT B
48 GPS ARINC 429 IN 1 A
49 GPS ARINC 429 IN 1 B
50 GPS ARINC 429 IN 2 A
51 GPS ARINC 429 IN 2 B
52 RESERVED
53 RESERVED
54 GPS RS 232 OUT 4
55 GPS RS 232 IN 4
56 GPS RS 232 OUT 1
57 GPS RS 232 IN 1
58 GPS RS 232 OUT 2
59 GPS RS 232 IN 2
60 ALTITUDE COMMON (GROUND)
61 ALTITUDE C4
62 ALTITUDE C2
63 ALTITUDE C1
64 ALTITUDE B4
65 ALTITUDE B2
66 ALTITUDE B1
67 ALTITUDE A4
68 ALTITUDE A2
69 ALTITUDE A1
70 ALTITUDE D4
71 OBS MODE SELECT
72 AIRCRAFT POWER 2*
73 CDI SOURCE SELECT
74 RESERVED
75 DEMO MODE SELECT
76 RESERVED
77 AIRCRAFT GROUND
78 AIRCRAFT GROUND
* Applies only to part numbers 011-00280-30 (GNS 430), 011-00836-10 (GNS 430A), 011-00506-30
(GNC 420), 011-00837-10 (GNC 420A) and 011-00504-10 (GPS 400). For applications requiring
secondary or alternate power bus input.
Page 4-2
Rev Q
Connector P4001, continued
400 SERIES INSTALLATION MANUAL
I/O
Out
Out
In
In
In
Out
Out
Out
Out
Out
Out
In
In
In
In
--
--
Out
In
Out
In
Out
In
Out
In
In
In
In
In
In
In
In
In
In
In
In
In
--
In
--
--
--
190-00140-02