137
Commands
$PASHS,SIT,0001
Enter the following command to set the site name to SQR1:
$PASHS,SIT,SQR1
Ephemeris data is output once every 15 minutes or each time the IODE changes, whichever comes
first, with one satellite output at each recording interval (RCI).
SNV: Satellite Ephemeris Data
$PASHS,RAW,SNV,c1,s2[,f3]
This command enables/disables the GPS raw satellite ephemeris data message,
where c1 is A or B (port), s2 is ON or OFF, and f3 is the optional update rate as
defined in Table 4.66 on page 134.
$PASHQ,SNV,[c1]
This command allows you to query ephemeris data from each satellite currently
being tracked by the receiver, where [c1] is the optional port designator for the
response. If a port is not specified, the receiver sends the response to the current
port.
$PASHR,SNV
One SNV message is output for each satellite being tracked. This message is not
output unless the receiver is locked on at least one satellite. SNV messages contain
some of the same data found in the SAL message, but also contains clock correction
parameters and harmonic correction parameters. The message is output in the
format:
$PASHR,SNV,<Ephemeris data string + checksum>
Table 4.68 defines the SNV data string format.
DEFAULT SETTING
SIT ????
Table 4.68. $PASHQ,SNV Response Structure
Field Bytes Content
short wn 2 GPS week number
long tow 4 Seconds of GPS week
float tgd 4 Group delay (seconds)
long aodc 4 Clock data issue
G12RevD.book Page 137 Tuesday, April 2, 2002 4:33 PM
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