Maestro e200 series User Manual - page 201
MAESTRO WIRELESS SOLUTIONS
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E200 SERIES | USER MANUAL VERSION 1.0
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201
3. $GPVTG,0.0,T,0.3,M,0.0,N,0.0,K,A*20
Parameters
Description
MID VTG Parameters
MID
VTG Protocol Header
Example – $GPVTG
Course
Measured heading
Example – 0.0 degrees
Reference
True
Example – T
Course
Measured heading
Example – 0.3 degrees
Reference
Magnetic
(1)
Example – M
Speed
Measured horizontal speed
Example – 0.0 knots
Units
Knots
Example – N
Speed
Measured horizontal speed
Example – 0.0 km/hr
Units
Kilometers per hour
Example – K
Mode
Indicates
A –
Autonomous
D –
DGPS
E –
DR
N –
Output Data Not Valid
R –
Course Position
(2) (3) (4)
S –
Simulator
Example
–
A
Checksum
*20
End of message termination
Table 12.5-4: VTG Data Format