Datasheet

GP-1818MK
9
1
Depending on the number of satellites tracked multiple messages of GSV data may be required.
3.1.5 RMC-Recommended Minimum Specific GNSS Data
Table 6 contains the values of the following example:
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10
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
ddmm.mmmm
E/W Indicator
W
E=east or W=west
Speed Over Ground
0.13
knots
Course Over Ground
309.62
degrees
Ture
Date
120598
dBHz
ddmmyy
Magnetic Varation
E=east or W=west
Checksum
*10
＜CR＞＜LF＞
End of message termination
3.1.6 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
Ture
Course
degrees
Measured heading
Reference
M
Magnetic
Speed
0.13
knots
Measured horizontal speed