ashtech DG14, Reference Manual

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162 DG14 and DG16 Board & Sensor Reference Manual
Table 6.55 outlines the response message.
SVS: Include/Exclude Satellites for Acquisition and Tracking
$PASHS,SVS,c1,c2,c3...c32
This command includes and excludes specific satellites for acquisition and tracking,
where c is Y (include) or N (exclude). Like the SVP set command, the c parameters
are not separated by commas. The receiver will not track a satellite which has been
excluded through this command. All satellites are included for acquisition and
tracking by default. The parameters c1 through c32 correspond to GPS satellites
PRN numbers 1 through 32. It is not necessary to enter a setting for all 32 satellites
when using this command.
Examples
To exclude satellites 4 and 7 from the position computation, enter the following
command:
$PASHS,SVS,YYYNYYN
This command excludes satellites 4 and 7 from being acquired and tracked, but
does not change the settings for satellites 8 through 32
$PASHQ,SVS,[c1]
This command queries the current SVS settings, where c1 is the optional output
serial port. If a port is not specified, the receiver sends the response to the current
port.
Table 6.55. $PASHR,SVP Message Format
Parameter Description
$PASHR,SVP Header
YYY…Y Indicates that all 32 PRN numbers are included
for position computations
*0D Checksum
DEFAULT SETTING
SVP—Y (all satellites included)