TW5210 User Manual rev 1_2
29
©2011 Tallysman Wireless, Inc.
Confidential
5 = Elevation in degrees, 90 maximum
6 = Azimuth, degrees from true north, 000 to 359
7 = SNR, 00-99 dB (null when not tracking)
8-11 = Information about second SV, same as field 4-7
12-15 = Information about third SV, same as field 4-7
16-19 = Information about fourth SV, same as field 4-7
20 = Checksum
8.1.5
VTG
The VTG message provides vector track and speed over ground
$GPVTG,hhh.hh,a,hhh.hh,a,x.xx,a,xx.x,a*hh
VT = Course over Ground and Ground Speed.
$GPVTG,0.0,T,,M,0.0,N,0.0,K*60
1 = Measured heading
2 = reference (True)
3 = Measure heading
4 = reference (Magnetic
)
5 = Horizontal speed (knots)
6 = Units ( knots)
7 = Horizontal speed ( km/hour)
8 = Units (km/hr)
9 = Checksum
16-19 = Information about fourth SV, same as field 4-7
20 = Checksum