User's Manual

Troubleshooting
ReceiverProblems
72
P/N:7010Ͳ1004
–OrderanewOAFwiththerequiredoptionsactivatedtoenableorextendvalidityofthecorrespondingreceiver
options.
–RefertotheTopconReceiverUtility(TRU)ReferenceManualforadetaileddescriptionofoptions.
• Therearenotenoughcommonsatellites.Inordertoobtainafixedsolution,theBaseandRovershouldtrackatleast
fivecommonsatellites.
–ChecktheelevationmasksoftheRoverandBasereceivers;theyshouldbethesame.Todothis,ontheTRU
mainwindow,chooseReceiverSettings

Tracking

Obs.
–Verifythereisaclearviewoftheskytoallowsufficientsatellitetracking.
• AdiscrepancyexistsbetweenthedifferentialstandardsusedattheBaseandRoverreceivers.
–EnsuretheBaseandRoverreceiversusethesamecorrectionsinput/outputformat:
a. ConnectthereceivertoacomputerandopenTRU(see“Connection”intheTopconReceiverUtility(TRU)
ReferenceManual).
b. InTRU,connecttothereceiver.
c. OntheTRUmainwindow,chooseReceiverSettings

Ports.
d. DoubleͲclickontheporttobeconfigu
redandmakesuretheinputmode oftheRovermatchestheformat
oftheBaseoutputmode(i.e.RTCM3).
• Poorsatellitegeometry(PDOP/GDOPvaluesaretoohigh).
–Conductthesurveywheresatellitevisibilityisbetter(lowPDOPvalue).
–Ensuretheelevationmaskislessthan15degrees.
–IncreasethePDOPthreshold.To dothis,ontheTRUmainwindow,chooseReceiverSettings

Tracking

Obs.
• Theelevationmaskisabove15degrees.
–Lowertheelevat ionmask.Todothis,ontheTRUmainwindow,chooseReceiverSettings

Tracking

Obs.
–Verifythereisaclearviewoftheskytoallowsufficientsatellitetracking.