Instruction manual

Page 36 Z-12 Real-Time Sensor Operation and Reference Manual
No CPD solution  Verify that there are at least four common satellites between
the base and the rover, using $PASHQ,CPD,INF command.
 Verify that base station coordinates have been received in the
rover side, using $PASHQ,CPD,POS command. If the
coordinates are not being received, make sure the base is
sending them periodically, using $PASHQ,CPD,MOD
command or $PASHQ,RTC command. Or you can entered
the base station coordinates in the rover side, using
$PASHS,CPD,POS command.
CPD solution is intermittent
and the Rover beeps
 Monitor the data link quality, using the $PASHQ,CPD,DLK
command. The QA number should be 90% or higher.
 Verify that fast CPD is turned on, using $PASHQ,CPD or
$PASHQ,CPD,MOD command.
 Verify the rover antenna has clear view to the sky and is
tracking satellite properly.
Cannot get fixed CPD
solution
 Verify using $PASHQ,CPD,INF command that at least 5 SVs
are being tracked for P1 and P2.
 Verify that the number of satellites common between the base
and rover is 5 or more. Even if 5 or more satellites are
tracked, you still may not get a fixed solution at locations with
severe multipath.
 Move away from the obstruction if possible. Issue
$PASHS,CPD,RST command to reinitialize the CPD operation.
CPD solutions are not being
stored in the Rover
 Verify that RAM board is installed.
 Verify that $PASHQ,CPD,OUT is selected to output CPD
solution.
 Verify that RECORD is set to Y in $PASHR,RAW message.
 Verify there are still memory avaialable.Verify the record
interval.
Cannot get the CPD solution
output in real-time
 Make sure the communication BAUD rate is correct. In RTCM
operation, the sensor port is not being set to RTCM base or
REMOTE.
 Verify the output selection, using $PASHQ,RAW and
$PASHQ,PAR commands.
Table 3.1: Troubleshooting Tips
Symptom Action