47
GPS connector
1
NMEA -
-12V data input NMEA 0183 format
2
+5V
+5 VDC supply max 75mA
3
NMEA +
+12V data input NMEA 0183 format
4 Ground
Ground
0V
5
1PPS
1PPS timing pulse TTL level from GPS
6
GPS RX
GPS TTL data input
Fan connector
1 +13.8VDC
2
Fan control - active low
Automatic antenna
1
Tune
Initiates tune 911, preamp active low 910
2
13.8VDC
(interrupted for 910 tune initiate)
3
Tuned
Tune successful low going pulse.
4
Ground 0V
Power connector
1
Fan control out
Active low 0V
2
Speaker out
External speaker 0-10V
3 N/C
4 N/C
5 N/C
A1 +13.8VDC
input
+13.8VDC
A2 -13.8VDC/Ground
13.8VDC/Ground