Trimble Outdoors SK8 - Manual (Page 183)

Lassen-SK8 Embedded GPS Module E-3
NMEA 0183
The format for each message in table C-2 is described in more detail in the next section.
E.4 NMEA 0183 Message Formats
E.4.1 GGA - GPS Fix Data
The GGA message includes time, position and fix related data for the GPS receiver.
Note – The GGA message provides 3 decimal points of precision in non-differential mode
and 4 decimal points of accuracy differential mode.
Table E-2. Lassen-SK8 NMEA Messages
Setting Message Description
Default GGA GPS Fix Data (NMEA Version 2.1)
GLL Geographic Position - Latitude/Longitude
GSA GPS DOP and Active Satellites
GSV GPS Satellites in View
RMC Recommended Minimum Specific GPS/Transit Data
Default VTG Track Made Good and Ground Speed
ZDA Time & Date
Table E-3. GGA - GPS Fix Data Message Parameters
Field Description
1 UTC of Position
2,3 Latitude, N (North) or S (South)
4,5 Longitude, E (East) or W (West)
6 GPS Quality Indicator: 0 = No GPS, 1 = GPS, 2 = DGPS
7 Number of Satellites in Use
8 Horizontal Dilution of Precision (HDOP)
9, 10 Antenna Altitude in Meters, M = Meters
11, 12 Geoidal Separation in Meters, M=Meters. Geoidal separation is the
difference between the WGS-84 earth ellipsoid and mean-sea-level.
13 Age of Differential GPS Data. Time in seconds since the last Type 1 or 9
Update
14 Differential Reference Station ID (0000 to 1023)