User Manual

2
2D (<4 SVs used)
3
3D (>3 SVs used)
This sentence reports the number of satellites (SV) in view, satellite ID numbers, elevation, azimuth
and SNR value. There could be four satellites information per transmission so; if the number of
satellites in view is bigger, separated GSV sentences will be generated. The number of sentence in
transmission and the total to be transmitted is shown in the first 2 fields of the sentence. Table G
contains the values for the following example:
$GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,42,27,27,138,42*71
$GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,42*41
Table G: GSV Data Format
Name
Example
Units
Description
Message ID
$GPGSV
GSV protocol header
Number of Messages
2
Range 1 to 3
Message Number1
1
Range 1 to 3
Satellites in View
07
Satellite ID
07
Channel 1 (Range 1 to 32)
Elevation
79
degrees
Azimuth
048
degrees
SNR (C/No)
42
dBHz
....
....
....
Satellite ID
27
Channel 4 (Range 1 to 32)
Elevation
27
degrees
Channel 4 (Maximum 90)
Azimuth
138
degrees
Channel 4 (True, Range 0 to 359)
SNR (C/No)
42
dBHz
Range 0 to 99, null when not tracking
Checksum
*71
<CR> <LF>
End of message termination
This sentence reports Time, date, position, and course and speed data. Table H contains the values for
the following example:
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
Table H: RMC Data Format
Name
Example
Units
Description
Message ID
$GPRMC
RMC protocol header
UTC Time
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