Onwa Marine Electronics KAP-866 - Manual (Page 13)

Setting up your GPS Navigator
Because there are a great variety of GPS Navigator that will work with this
autopilot, the following is a guide only. For more information, Please study
your GPS Navigator manual.
The GPS Navigator must be set up to output NMEA0183 data on a pair of
wires which are connected to the "GPS IN" terminal connections on KAP-866.
The data generated must include at least one of the followings:
The APA sentence.
The APB sentence.
The BOD and XTE Sentences.
If only the XTE data sentence is available, the pilot can steer in a Restricted
manner. See later in this section.
The GPS unit must then be commanded to go to a waypoint, or to follow a line
joining two or more waypoints (called a route).
This unit will then send information to the autopilot from which can be calcu-
lated the course-to-steer. IF several waypoints are linked together into a single
route, and the GPS unit is set to "auto-sequenence" between them, and an
"arrival zone" of more than 0.1 NM(Nautical Miles)is set so that the GPS can
detect when the vessel has reached a waypoint, then the KAP-866 will be able
to steer from each waypoint to the next without intervention.
If only the XTE information is available from your GPS unit then your vessel
must be on track, and heading in the correct direction before engaging the GPS
mode, and the auto-sequencing feature is not available.
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