158 G12 OEM Board & Sensor Reference Manual
GST: Pseudo-Range Error Statistics
$PASHS,NME,GST,x,c,[f]
Enables/disables the GST message where x is the serial port, and 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.
The GST message provides a real time estimate (1 sigma) of the position error.
The receiver does not output this message if a position is not computed.
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.
Example
Enter the following command to enable GST message on port B.
$PASHS,NME,GST,B,ON
048 Signal strength of the first satellite
29 PRN number of the second satellite
046 Signal strength of the second satellite
25 PRN number of the third satellite
048 Signal strength of the third satellite
08 PRN number of the fourth satellite
040 Signal strength of the fourth satellite
31 PRN number of the fifth satellite
037 Signal strength of the fifth satellite
15 PRN number of the sixth satellite
048 Signal strength of the sixth satellite
21 PRN number of the seventh satellite
046 Signal strength of the seventh satellite
999 Indicates that the G12 is unable to
receive differential corrections or
differential GPS is disabled
*4F Checksum
Table 4.83. Typical GSN Message (Continued)
Field Description
G12RevD.book Page 158 Tuesday, April 2, 2002 4:33 PM
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