Topcon X-63 - Page 67

Verifying Setup

59
X‐63/X‐63i/X‐62/X‐33/X‐32InstallationandCalibrationManual P/N:7010‐0697
MeasurewithBucket Extended:
1. Fullyextendtheelementsandthebucketawayfromthemachine,withthebucketonthe
ground.
2. RecordtheEastingvalueofthepreviouslychosenbucketcornerusingasurveyrover(e.g.
Easting
Rover‐Ext
=520.51).
3. RecordtheEastingvalueofthesamecornerwith3D‐MC(e.g.Easting
3DMC‐Ext
=520.48).
CalculateAdjustments:
1. Calculatetheadjustmentneededin3D‐MCfortheMainAntenna‐to‐BoomCenterlinelength
usingthefollowingequation:Adjustment=[Easting
Rover
‐Easting
3DMC
].Usethisadjustment
calculationforcurled‐inandextendedpositions(see
Table8).
2. Adjustthevaluein3D‐MCfortheMainAntenna‐to‐BoomCenterlinemeasurementbythe
calculatedamount.Donotphysicallymovetheantenna.
• Apositiveadjustmentshouldbeaddedtothe3D‐MCvalues(thedistanceaw ayfromthecenterline
increases).
• Anegativeadjustmentshouldbesubtractedfromthe3D‐MCvalues(thedistanceawayfromthe
centerlinedecreases).
3. Toavoidrotationalerrors,adjustthe3D‐MCvaluesoftheAuxAntennatomatchthoseofthe
MainAntennainthesamedirection.
• ApositiveadjustmentmadefortheMainAntennashouldbesubtractedfromthe3D‐MCvaluesof
theAuxAntenna(thedistanceawayfromthecenterlinedecreases).
• AnegativeadjustmentmadefortheMainAntennashouldbeaddedtothe3D‐MCvaluesoftheAux
Antenna(thedist ancefrom thecenterlineincreases.
4. RepeatallstepsofMethodAtoverifythecorrection.
IfthereisadifferencebetweentheAdjustment
Curl
andtheAdjustment
Ext
,repeatthesteps
in“VerifyingAuxAntenna‐to‐BoomLength”onpage55.
Table8.ExampleCalculationswithaSurveyRover
Measurement Symbol Value Adjustment
Curled‐inEasting(Rover) Easting
Rover‐Curl
520.38
Curled‐inEasting(3DMC) Easting
3DMC‐Curl
520.35
ExtendedEasting(Rover) Easting
Rover‐Ext
520.51
ExtendedEasting(3DMC) Easting
3DMC‐Ext
520.48
CurledAdjustment Adjustment
Curl
[520.38‐520.35]=0.03
ExtendedAdjustment Adjustment
Ext
[520.51‐520.48]=0.03