Rgm-3550lp user manual – RoyalTek RGM-3550LP User Manual
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RGM-3550LP User Manual
Table 6 GGA Data Format
Name Example
Units
Description
Message ID
$GPRMC
RMC protocol header
UTC Position
161229.487 hhmmss.sss
Status
A
A=data valid or V=data not valid
Latitude 3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude 12158.3416
dddmm.mmmm
E/W Indicator
W
E=east or W=west
Speed Over Ground
0.13
knots
Course Over
Ground
309.62 degrees
True
Date 120598
ddmmyy
Magnetic Variation
degrees
E=east or W=west
Checksum *10
<CR><LF>
End of message termination
VTG-Course Over Ground and Ground Speed
Table 7 contains the values of the following example:
$GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E
Table 7 VTG Data Format
Name Example
Units
Description
Message ID
$GPVTG
VTG protocol header
Course 309.62
degrees Measured
heading
Reference T
True
Course
degrees Measured
heading
Reference M
Magnetic
Speed
0.13
knots
Measured horizontal speed
Units N
Knots
Speed
0.2
km/hr
Measured horizontal speed
Units
K
Kilometer per hour
Checksum *6E
<CR><LF>
End of message termination