Magellan GPS 310 - Manual (Page 41)

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NMEA 0183 VERSION 2.1
APB Autopilot Sentence “B”
1 2 3 4 5 6 7 8 9 10 11 12 13 14
APB,A,A,x.x,a,N,A,A,x.x,a,c—c,x.x,a,x.x,a*hh
1 Status: A = Data valid
V = Loran-C Blink or SNR warning
V = general warning flag for other
navigation systems when a
reliable fix is not available.
2 Status: V = Loran-C cycle lock warning flag
A = OK or not used
3 Magnitude of XTE
4 Direction to steer (L, R)
5 XTE units, nautical miles
6 Status: A = arrival circle entered
7 Status: A = perpendicular passed at waypoint
8-9 Bearing origin to destination, M/T
10 Destination waypoint ID
11-12 Bearing, present position to destination,
Magnetic or True
13-14 Heading to steer to destination waypoint,
Magnetic or True