Ninglu AM706D, Operation Manual

Page: 13 / 36

8
GPS data input—GGA data input
$--GGA,hmmss.sss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,
x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
(1) UTC of position
(2) Latitude
(3) Latitude N/S
(4) Longitude
(5) Longitude E/W
(6) GPS quality indicator
：
0=fix not available or invalid
1= GPS SPS mode, fix valid
2=differential GPS, SPS mode, fix valid
6=Estimated (dead reckoning) mode
(7) Number of satellites in use, 00-12, may be different from the number
in view
(8) Horizontal dilution of precision
(9) Antenna altitude above/below mean sea level(geoid)
(10) Units of antenna altitude, m
(11) Geoidal separation
(12) Units of geoidal separation, m
(13) Age of differential GPS data
(14) Differential reference station ID, 0000-1023
(15) Checksum value
GPS data input—VTG
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
(1) Course over ground, degree true
(2) Course over ground, degree magnetic
(3) Speed over ground, knots
(4) Speed over ground, km/h
(5) Mode indicator
，
A=Autonomous mode
D=Differential mode
E=Estimated
（
dead reckoning
）
mode
M=Manual input mode
S=Simulator mode
N=Data not valid
(6) Checksum value
1 2 3 4 5 6 7
8 10 9
11 12 13
1 2 3 4 5 6
14 15