15
RSA-1500L User Manual
Table 2-8 GSV Data Format
Name Example
Units Description
Message ID $GPGSV
GSV protocol header
Number of
Messages1
2 Range 1 to 3
Messages Number1
1 Range 1 to 3
Satellites in View 07
Satellite ID 07 Channel 1(Range 1 to 32)
Elevation 79 degrees
Channel 1(Maximum 90)
Azimuth 048 degrees
Channel 1(True, Range 0 to 359)
SNR (C/No) 42 dBHz Range 0 to 99, null when not
tracking
…. ….
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
1Depending on the number of satellites tracked multiple messages of GSV data may be required.
2.1.5 RMC-Recommended Minimum Specific GNSS Data
Table 2-9 contains the values of the following example:
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10
Table 2-9 RMC 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