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JLR-7700 MK2 GPS Navigator
<Version 2.1>
RMC sentence
$GPRMC,hhmmss,A,llll.lll,a,yyyyy.yyy,a,xx.x,xxx.,ddmmyy,xx.,a*hh<CR><LF>
12345 678 9101112
1 : UTC time (hour, minute, and second)
2 : Status, A = Valid, V = Invalid
3 and 4 : Latitude (degree and minute), N/S
5 and 6 : Longitude (degree and minute), E/W
7 : Speed (knot)
8 : True course (degree)
9 : UTC (day, month, and year)
10 and 11 : Magnetic variation value, E/W
12 : Checksum
RMB sentence
$GPRMB,A,x.xx,a,cccc,cccc,llll.lll,a,yyyyy.yyy,a,xxx.xx,xxx.,uxx.x,A*hh<CR><LF>
1234 5 67 8 9 10 11 121314
1 : Status, A = Valid V = Invalid
2 : Cross-track error (NM)
3 : Direction to steer, L = Left R = Right
4 : Origin waypoint ID
5 : Destination waypoint ID
6 and 7 : Latitude of the destination, N/S
8 and 9 : Longitude of the destination, E/W
10 : Distance to destination (NM)
11 : True bearing to the destination (degree)
12 : VTD (knot), (u : “-” is output in case the speed is at a negative value and no output in case
it is at a positive value or zero)
13 : Arrival alarm, A = Arrived, V = Not arrived
14 : Checksum
APB sentence
$GPAPB,A,,x.xx,a,N,A,,xxx,a,cccc,xxx,a,,*hh<CR><LF>
1 2 345 6 7 8 910 11
1 : Status, A = Valid V = Invalid
2 : Cross-track error (NM)
3 : Direction to steer, L = Left R = Right
4 : XTE unit N (nautical mile), fixed
5 : Arrival alarm, A= Arrived V = not arrived
6 and 7 : Bearing origin to destination, M = Magnetic, T =True
8 : Destination waypoint ID
9 and 10 : Bearing of current position to destination, M = Magnetic T = True
11 : Checksum
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