Onwa Marine Electronics KAP-833 - Manual (Page 23)

OFF ON
1 COMPASS CTS
2 COMPASS CTS
3 3 Not used
4 RFUS RFUH
Terminal Strip Side of PCB
For Magnetic Sensor (COMMAG - Autopilot Compass) switches 1 and 2 must be
OFF. For Compass Top Sensor (CTS)switches 1 and 2 must be ON.
18
Calibration
The compass unit will need to be rotated in its bracket for the correct heading to
be displayed. The compass is calibrated before leaving the factory and will be
accurate enough for sea trials. After initial sea trials, you may wish to recalibrate
the KAP-833 compass, although in most cases the factory calibration will be as
good as or better than calibration achieved on the vessel. See the Compass
Calibration section in autopilot operation.
Interchanging Magnetic Sensor Unit & Compass Top Sensor
The magnetic sensor unit (fluxgate) and compass top sensor can be interchanged.
However, the compass detector switches identified as component SW 1 on the
PCB must be switched to correct position. (Note: Rear cover must be removed).
For magnetic sensor unit (compass): switch 1 and 2 to OFF
For compass top sensor: switch 1 and 2 to ON