Garmin GNC 420 GPS Receiver User Manual


 
Page B-4 400 SERIES MAINTENANCE MANUAL
Rev. C P/N 190-00140-05
Table B-3. J1 Descriptions
(continued)
GPS RS232 IN4 55 I
GPS RS232 OUT1 56 O
GPS RS232 IN1 57 I
GPS RS232 OUT2 58 O
GPS RS232 IN2 59 I
ALTITUDE COMMON (Ground) 60 O
ALTITUDE C4 61 I
ALTITUDE C2 62 I
ALTITUDE C1 63 I
ALTITUDE B4 64 I
ALTITUDE B2 65 I
ALTITUDE B1 66 I
ALTITUDE A4 67 I
ALTITUDE A2 68 I
ALTITUDE A1 69 I
ALTITUDE D4 70 I
OBS MODE SELECT 71 I
SPARE INPUT B 72 I
CDI SOURCE SELECT 73 I
SPARE INPUT A 74 I
DEMO MODE SELECT 75 I
TEST MODE SELECT 76 I
GROUND 77 O
GROUND 78 O
B.3.2 J8
Table B-4. J8 Descriptions
Pin Name Pin # I/O
VCC 1 O
VCC 2 O
GND 3 O
33MHZ 4 I
GND 5 O
IF 6 I
RSSI 7 I
TRAP 8 O