User manual

CRADLEPOINT CBA750B | USER MANUAL Firmware version 4.2
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8.1.6 NMEA GGA sentences
See http://aprs.gids.nl/nmea/, http://www.gpsinformation.org/dale/nmea.htm#nmea, and/or http://gpsd.berlios.de/NMEA.txt
for more information about GPS NMEA reporting.
$GPGGA – Essential fix data including 3D location and accuracy information
Example: $GPGGA,1753405,4916.450,N,12311.127,W,2,06,1.5,117.3,M,!26.574,M,6.0,0138*47
1753405
Time of fix – 17:34:05 UTC
4916.450,N
Latitude 49 deg. 16.450 min North
12311.127,W
Longitude 123 deg. 11.127 min West
2
Fix quality:
• 0 = fix not available
• 1 = GPS fix
• 2 = Differential GPS fix
• 3 = PPS fix
• 4 = Real Time Kinematic
• 5 = Float RTK
• 6 = estimated (dead reckoning)
• 7 = Manual input mode
• 8 = Simulation mode
06
Number of satellites being tracked
1.5
Horizontal dilution of precision (HDOP) – relative accuracy of horizontal position
117.312,M
Altitude in meters above mean sea level
!26.574,M
Geoidal separation: height of mean sea level above WGS-84 earth ellipsoid (negative value means
mean sea level is below ellipsoid)
6.0
Time in seconds since last update from differential reference stations
0138
Differential reference station ID number
*47
Checksum – used by program to check for transmission errors