Specifications

Data output | 29
7 ---- Standard deviation of longitude error
(meters)
8 ---- Standard deviation of altitude error
(meters)
(7) VTG - Course Over Ground and Ground Speed
The actual course and speed relative to the ground.
Notes: 1,2 ---- Course over ground, degrees True
2,3 ---- Course over ground, degrees Magnetic
5,6 ---- Speed over ground, knots
7,8 ---- Speed over ground, km/hr
9 ------ Mode indicator: A = Autonomous mode
D = Differential mode
E = Estimated (DR)
M = Manual input mode
S = Simulator mode
N = Data not valid
(8) ZDA -Time and Date
UTC, day, month, year and local time zone
Notes: 1 --- UTC
2, 3, 4 --- Day, month & year
5 --- Local zone hours, 00 to + 13 hrs.
6 --- Local zone in minutes, 00 to +59.
$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
1
2
3 4
5
6 7 9
8
$GPZDA,hhmmss,xx,xx,xxxx,xx,xx*hh<CR><LF>
1
2
3 4
5
6