FGPMMOPA5 Datasheet, PDF (20/21 Pages) List of Unclassifed Manufacturers – 51-channel GPS Engine Board

FGPMMOPA5
Datasheet
VTG—Course and speed information relative to the ground.
Table-9 contains the values for the following example：
$GPVTG,198.97,T,,M,0.21,N,0.39,K,A*3D
VTG Data Format
Table-9
Name
Example Units Description
Message ID
$GPVTG
VTG protocol header
Course
198.97
degrees Measured heading
Reference
T
True
Course
degrees Measured heading
Reference
M
Magnetic
(MTK does not support
magnetic declination.)
Speed
0.21
knots Measured horizontal speed
Units
N
Knots
Speed
0.39
km/hr Measured horizontal speed
Units
K
Kilometers per hour
Mode
A
A= Autonomous mode
D= Differential mode
E= Estimated mode
Checksum
*3D
<CR> <LF>
End of message termination
MTK NMEA Command Protocol
Packet Type：
103 PMTK_CMD_COLD_START
Packet Meaning：
Cold Start：Don’t use Time, Position, Almanacs and Ephemeris data at re-start.
Example：
$PMTK103*30<CR><LF>
Rev.A04
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