TW5310 User Manual
17
©2011 Tallysman Wireless, Inc.
Confidential
Note: The number of
6.1.2
GGA
The GGA message provides Fix Information.
$GPGGA,hhmmss.sss,llll.lllll,a,yyyyy.yyyyy,a,x,xx,xx.x,xxx.xx,M,xx.x,M,x.x,xxxx*hh
GGA = Global Positioning System Fix Data
$GPGGA,204804.000,4520.25363,N,07554.20602,W,0,00,99.0,087.54,M,-34.4,M,,*62
The following fields are listed in the order shown in the comma-separated sentence.
1 = UTC of Position
2 = Latitude
3 = N or S
4 = Longitude
5 = E or W
6 = GPS quality indicator (0=invalid; 1=GPS fix; 2=Diff. GPS fix)
7 = Number of satellites in use [not those in view]
8 = Horizontal dilution of position
9 = Antenna altitude above/below mean sea level (geoid)
‡ 10 = Meters (Antenna height unit)
11 = Checksum
11 = Geoidal separation (Diff. Between WGS-84 earth ellipsoid and
mean sea level.-=geoid is below WGS-84 ellipsoid)
12 = Meters (Units of geoidal separation)
13 = Age in seconds since last update from diff. Reference station
14 = Diff. Reference station ID#
15 = Checksum
‡ Note: If 4 or 5 digit GGA is configured the Meters output will be 2 digits. If 3 digit GGA
is configured the Meters output will be 1 digit.
