Simrad AUTOPILOT SYSTEM AP50 - Manual (Page 112)

Simrad AP50 Autopilot
110
20221032B
The potentiometer VR1 is factory set to a reference voltage of
2.5V, and should not be readjusted.
Power Turn-on
After power turn-on, verify that the LED D8 is lit. This indicates
that the regulated 5V is OK.
If step-signals are connected, observe if the LED’s D1, D2 and
D3 are lit. If so, pull out the plug-in jumpers and insert them in
the vertical direction. The LEDs D5, D6 and D7 shall turn on
and off in a Gray-code sequence when changing the gyro
heading.
Note ! If synchro signals are connected, the position of the plug-in
straps is irrelevant. However, if the NMEA read-out does not
follow the gyro, phase S1 and S3 may have to be interchanged.
The LED D4 shows the presence of the synchro reference
voltage, and the LEDs D1, D2 and D3 will turn on with variable
intensity, depending on the phase voltage.
If the heading read-out has an offset, this is compensated by the
“Compass Offset” in the “Installation Seatrial Menu”. See page
134 for details.
Select interface port in the Installation Interface Menu.
Figure 4-40 GI50 PCB - Switch location
+ stepper