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Trimble R7/R8 GPS Receiver User Guide 181
NMEA-0183 Output A
Trimble R7 and R8
Note – The PTNL,GGK_SYNC message is longer than the
NMEA-0183 standard of 80 characters.
6 Direction of Longitude:
E: East
W: West
7 GPS Quality indicator:
0: Fix not available or invalid
1: Autonomous GPS fix
2: Differential, floating carrier phase integer-based solution,
RTK(float)
3: Differential, fixed carrier phase integer-based solution,
RTK(fixed)
4: Differential, code phase only solution (DGPS)
8 Number of satellites in fix
9 DOP of fix
10 Ellipsoidal height of fix
11 M: ellipsoidal height is measured in meters
Table A.9 PTNL,GGK_SYNC message fields (continued)
Field Meaning