Instruction manual

Page 34 Z-12 Real-Time Sensor Operation and Reference Manual
4. To improve the vector solution, you may wait for 5-10 epochs of data before
issuing the next set of commands:
$PASHS,SIT,????
$PASHS,CPD,FST,ON
$PASHS,CPD,DYN,2
These three commands reset the unit for dynamic operation. The receiver
will beep twice, indicating that the vector solution has been created.
5. Wait for more than two seconds, and then enter the next command to log the
solution to the OBEN file:
$PASHQ,OBN
6. Verify the site name in the vector solution. If it does not match, query again.
7. You can move the GPS antenna to the next site.
Solution Storage
If your sensor has external memory, you can store the raw measurements and the
solution inform ation into the receiver’s memory. These data can then be downloaded
to a PC into B, E, and S file format via Ashtech’s GPPS-HOSE or PRISM-TRANSFER
programs at a later time.
• To create/delete files, use $PASHS,FIL command.
• To select file storage type, use $PASHS,RNG command.
• To check the memory usage, use $PASHQ,FCRS or $PASHQ,FLS
command.
• To verify the data recording setup, use $PASHQ,RAW and $PASHQ,PAR
command.
When setting up a sensor to store solutions, pay special attention to the following
items:
• Recording interval
• Minimum number of SV
• Elevation mask
• Ranger mode type
• Recording is set to Yes
• Site name
Since CPD is a differential operation, a solution may not be available if the
differential data link is lost. However, the receiver will always store the raw
measurements whether the CPD solution is available or not. When the CPD solution
is not available, the position computed by the raw pseudo-ranges, or the autonomous
position, will be stored instead.
Information in CBEN, OBEN, and UBEN cannot be stored in Sensor memory.