Simrad AUTOPILOT SYSTEM AP50 - Manual (Page 149)

Advanced Settings
20221032B
147
NMEA Signal Monitor
Near the NMEA terminals in the junction unit you will find a
green monitor LED (Refer to Junction Unit Terminals, page 86).
A flickering LED indicates that a NMEA signal is received. It
does not, however, qualify the contents of the message.
Note ! Do not confuse this “RX” LED with the LED marked “TX”. The
“TX” LED will always be lit/flickering when the autopilot is on.
NMEA Port Test (J50 hardware)
Disconnect the cables on the Main PCB in the junction unit and
connect TX1+ to RX1+ and TX1– to RX1–. Similarly, on the
Power PCB, connect the NMEA ports the same way: TX2+ to
RX2+ and TX2– to RX2–.
Loopback NMEA1 OK
Loopback NMEA2 FAIL
NMEA PORT TEST
Under SERVICE in the Installation Menu, select "NMEA PORT
TEST" by pressing the (STBD) button and confirm this by
rotating the course knob clockwise.
Verify that the hardware is OK. If not, replace the corresponding
PCB(‘s).
Master Reset
Note !
SYSTEM DATA
NMEA DATA
NMEA PORT TEST
Master reset?
Warning:
Will restore factory
settings. New setup
will be required
No
Yes
A Master Reset is part of the final test at the factory, which will
reset the memories to factory settings. Unless you need to clear
all stored values during the installation set-up procedure, you
should not perform a Master Reset. A Master reset will also
clear the stored compass calibration values, except for RFC35R
Rate Compass values, which are stored in the compass.
SYSTEM DATA
NMEA DATA
NMEA PORT TEST
Turn CCW
Warning:
Will restore factory
settings. New setup
will be required
No
Yes
The Master Reset needs a double confirmation to prevent an
accidental reset. To perform a Master Reset, rotate the course
knob clockwise and then rotate the course knob counter-
clockwise.
Exit the Installation Menu by pressing the STBY (STBY) button to
return to normal AP50 operation.