User`s guide

Chapter 5 - I/O Commands
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
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GPGSV (NMEA GPS SATELLITES IN VIEW)
This command enables the GPGSV GPS Satellites in View message and determines the rate at
which the information is transmitted. The periodic rate field (yyyy) instructs the receiver either to
output this message once (polled), or to output this message at the indicated update rate
(continuously). Once the receiver is set to continuous output, the continuous flow can be stopped
by sending a one-time (polled) output request. The receiver will output the response one final
time, and then terminate any further message outputs.
If the receiver is not tracking the satellite, the SNR field (ss) will be nulled. Further, an entire
group — satellite ID field (ii), elevation field (ee), azimuth field (aaa), and SNR field (ss) — will be
nulled if not needed.
NOTE: The value shown in the SNR field (ss) is the same as the C/No value in the 12 Channel
Position/Status/Data Message (@@Ha) and the 12 Channel Short Position Message (@@Hb).