160 G12 OEM Board & Sensor Reference Manual
Table 4.85 defines the response message structure.
GSV: Satellites in View
$PASHS,NME,GSV,x,c,[f]
This command allows you to enable or disable the GSV response message on the
output port x, where c 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.
If the command is set without a period, the G12 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.
$PASHQ,GSV,[c1]
This command allows you to query for the GSV message, where c1 is the optional
port designator for the output of the response. If a port is not specified, the receiver
sends the response to the current port.
$GPGSV
The GSV message contains the PRN number, elevation, azimuth, and signal to
noise ration for each visible satellite. This message contains data for a maximum
of four satellites. If seven satellites are visible, two GSV messages are output; if
ten satellites are visible, three GSV messages are output.
Table 4.85. Typical GST Message
Field Description
$GPGST Header
130927.00 UTC time of the position fix
18.45 RMS value of the standard deviation of satellite range
inputs (1sigma position error)
empty field THIS FIELD NOT IMPLEMENTED
empty field THIS FIELD NOT IMPLEMENTED
empty field THIS FIELD NOT IMPLEMENTED
17.78 Standard deviation of the latitude error (meters)
11.74 Standard deviation of the longitude error (meters)
28.68 Standard deviation of the altitude error (meters)
*71 Checksum
G12RevD.book Page 160 Tuesday, April 2, 2002 4:33 PM
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