User Manual

5700/5800 GPS Receiver User Guide 187
NMEA-0183 Output A
5700 & 5800 Reference
GSV Satellite Information
The GSV message string identifies the number of SVs in view, the
PRN numbers, elevations, azimuths, and SNR values. An example of
the GSV message string is shown below. Table A.4 describes the
message fields.
$GPGSV,4,1,13,02,02,213,,03,-3,000,,
11,00,121,,14,13,172,05*67
PTNL,GGK
Time, Position, Position Type, DOP
An example of the PTNL,GGK message string is shown below.
Table A.5 describes the message fields.
Table A.4 GSV message fields
Field Meaning
1 Total number of messages of this type in this cycle
2 Message number
3 Total number of SVs visible
4 SV PRN number
5 Elevation, in degrees, 90° maximum
6 Azimuth, degrees from True North, 000° to 359°
7 SNR, 00
–99 dB (null when not tracking)
8
–11 Information about second SV, same format as fields 4–7
12
–15 Information about third SV, same format as fields 4–7
16
–19 Information about fourth SV, same format as fields 4–7