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C NMEA-0183 Messages
108 DSM 132/132RS Receiver User Guide
Messages beginning with PTNL are Trimble proprietary messages.
Table C.5 NMEA message summary
Message Message Contents
GGA (GPS Fix Data) Time, position, and fix related data
GLL (Position Data) Position fix, time of position fix, and status
GRS (GPS Range
Residuals)
GPS range residuals
GSA (GPS DOP and
Active Satellites)
GPS position fix mode, SVs used for navigation and DOP values
GST (GPS PRN) GPS Pseudorange Noise (PRN) statistics
GSV (GPS Satellites in
View)
Number of SVs visible, PRN numbers, elevation, azimuth and SNR
values
MSS (Beacon Receiver
Signal Status)
Signal strength, signal-to-noise ratio, beacon frequency, and
beacon bit rate
RMC (Recommended
Minimum Specific GPS
Data)
UTC time, status, latitude, longitude, speed over ground (SOG),
date, and magnetic variation of the position fix
VTG (Course Over
Ground and Ground
Speed)
Actual track made good and speed over ground
XTE (Cross-Track Error) Cross-track error
ZDA (Time and Date) UTC time, day, month, and year, local zone number and local zone
minutes
PTNLDG Proprietary
(Trimble DGPS Receiver
Status)
Beacon channel strength, channel SNR, channel frequency,
channel bit rate, channel number, channel tracking status, RTCM
source, and channel performance indicator
PTNLEV Proprietary
(Event Marker)
Time, event number, and event line state for time-tagging change of
state on an event input line