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VTG
1
VTG,XXX.,T,XXX.,M,XX.X,N,XX.X,K
1-2
3-4
5-6
7-8
XTE
1 2 3
XTE, A,A,X.XX, L,N
1
2
3
4
5
NMEA 0183 VERSION 2.1
APB
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
2
A = OK or not used
3
4
5
6
Status: A = arrival circle entered
7
Status: A = perpendicular passed at waypoint
8-9
10
11-12 Bearing, present position to destination, Magnetic or True
13-14 Heading to steer to destination waypoint, Magnetic or
54
Actual Track and Ground Speed (SPD)
2 3
4 5
6 7
Track degrees, True
Track degrees, Magnetic
Speed, knots
Speed, kilometers/hour
Cross Track Error
4 5
Or'ed value Blink and SNR (A=Valid, V=Invalid)
Cycle Lock, (A=Valid, V=Invalid)
Cross Track Error
Steer Left of Right (L = Left, R = Right)
Units (N.Mi.)
Autopilot Sentence "B"
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.
Status: V = Loran-C cycle lock warning flag
Magnitude of XTE
Direction to steer (L, R)
XTE units, nautical miles
Bearing origin to destination, M/T
Destination waypoint ID
8
Magellan GPS 315/GPS 320
True
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