NMEA Commands 243
NMEA Commands
GSN: Satellite PRN Number and Signal Strength
$PASHS,NME,GSN,x,s,[f]
Enable or disable the signal strength/satellite number response message on port
x, where x is the output port, and s is ON or OFF, and f is the optional message
output rate ranging from 0.05 to 999 seconds depending on the measurement
update rate option installed.
The receiver does not output this message if a position is not computed.
If the command is set without a period, the DG16 uses the period set by the
$PASHS,NME,PER command If the $PASHS,NME,PER command is issued after
this message period has been set, the period resets to the PER setting.
31 DG16 channel 1 locked on satellite 31; satellite 31 used in position computations
29 DG16 channel 2 locked on satellite 29; satellite 29 used in position computations
23 DG16 channel 3 locked on satellite 23; satellite 23 used in position computations
26 DG16 channel 4 locked on satellite 26; satellite 26 used in position computations
empty field Indicates that this channel (5) is not locked on a satellite or that the locked satellite is
not being used in position computations
21 DG16 channel 6 locked on satellite 21; satellite 21 used in position computations
17 DG16 channel 7 locked on satellite 17; satellite 17 used in position computations
09 DG16 channel 8 locked on satellite 09; satellite 09 used in position computations
08 DG16 channel 9 locked on satellite 08; satellite 08 used in position computations
empty field Indicates that this channel (10) is not locked on a satellite or that the locked satellite is
not being used in position computations
03 DG16 channel 11 locked on satellite 03; satellite 03 used in position computations
empty field Indicates that this channel (12) is not locked on a satellite or that the locked satellite is
not being used in position computation
01.8 Current PDOP value
01.0 Current HDOP value
01.5 Current VDOP value
*0B Checksum
Table 8.15. Typical $GPGSA Message (Continued)
Field Description
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