Gsa: Dop And Active Satellites - ashtech DG16 Reference Manual

Typical GRS message:
$GPGRS,180257.50,1,019.3,004.6,-009.3,-005.6,-004.5,005.4*49
Table 8.13 outlines the response message.
Field
$GPGRS
180257.50
1
019.3
004.6
-009.3
-005.6
-004.5
005.4
*49

GSA: DOP and Active Satellites

$PASHS,NME,GSA,x,s,[f]
Enable or disable DOP and active satellite message to be sent out to the serial port,
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.
Example
Enter the following command to enable GSA message on port B.
$PASHS,NME,GSA,B,ON
$PASHQ,GSA,[c1]
This command queries the GSA 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.
NMEA Commands
Table 8.13. Typical GRS Message
Description
Header
UTC time of position fix
Pseudo-range residual error calculation mode
Range residual for first satellite in GSA message
Range residual for second satellite in GSA message
Range residual for third satellite in GSA message
Range residual for fourth satellite in GSA message
Range residual for fifth satellite in GSA message
Range residual for sixth satellite in GSA message
Checksum
241