Simrad AUTOPILOT SYSTEM AP50 User Manual
Page 129

Software Set-up Procedure
20221032B
127
Abbreviated 
name 
Equipment / Usage
NOTES
GPS1
Primary GPS/Chart Plotter
GPS2
Backup GPS/Chart Plotter
ECS1 *
Primary Electronic Chart 
System 
ECS2 *
Backup Electronic Chart 
System 
Can be used as either Nav. source 
or Speed source 
GYRO1
Any primary gyro
GYRO2
Backup gyro for GYRO1
NMEA, syncho or step signal input
THD1
Transmitting Heading Device
THD2
Transmitting Heading Device
NMEA input
MAGN1
Magnetic compass with 
course detector (CD100A) 
MAGN2
Magnetic compass with 
course detector (CD100A) 
1) CD100A + CDI35 connected to
J50
2) CD100A directly connected to
CI300X
FLUX1
For use with fluxgate 
compasses 
FLUX2
For use with fluxgate 
compasses 
RobNet, NMEA, sine/cosine or J50 
Heading Sensor (HS) input 
WIND
For wind sensor
DEPTH
For depth sensor
NMEA input
LOG
For speed sensor
NMEA or pulse log
Output INSTR
NMEA output of compass 
heading 
or VDR data 
HDG or HDT output increased 
from 1 to 5 times/sec. on TX1 port.
HDT and RSA 5x/sec. 
Output RADAR
Clock/data heading output to 
radars 
May select Simrad, Furuno, or 
Special** (for both J50 and 
NI300X) 
* Automatic course change at waypoint will now occur during navigation in NAV
mode.
** For future use.
Table 5-1 Interface Menu
Output signal
Output terminal
Output sentence
Continuous output of 10 Hz 
NMEA compass heading 
Junction unit, Power PCB, 
NMEA2, TX2+, TX2– 
HDT or HDG 
(input dependent) 
Table 5-2 Permanent NMEA Output on Port 2
