Spectra Precision Trimble UL 633N - 6.5 Manual Grade Match; 6.6 Axis Alignment; 6.6.1 Automatic Axis Alignment

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Whilethelaserissearchingandadjustingthebeamtotheon-gradeposition,
theHL760displayshowsaashing–GM–.
WhenGradeMatchhasbeencompleted,theHL760goesbacktothestandard
elevationdisplay.Theremotecontrolaswellasthelaserwilldisplaythenal
measured grade value.
Note:IfGradematchcan’tbecompletedbycheckingthelimits,thelasercomes
withanErrormessage(GradeMatchhasFailed)whichcanbe deleted with
button 4(OK).TheHL760goesbacktostandardelevationindication.
6.5 Manual Grade Match
NavigatetothemenuGradeMatch(Pic20).ChoosethesubmenuGradeMatchMan.(Pic25)
Pic25
GradeMatchmanual
InManualGradeMatch,thebeamonbothaxescanbeadjustedtothereceiver‘son-gradeposition,e.g,when
otherreceiversastheHL760areused.ThegradefortheY-axiscanbeadjustedwithbutton5/8 while button
6/7adjusttheX-axis.DuringManualGradeMatchacrossedvialandangle(Pic26)symbolappearnextto
thecontinuouslychangingY-andX-axisgradevalue.Afteradjustingtothereceiver’son-gradeposition,press
button 2(OK)togobacktoautomaticmodewherethenalgradevaluewillbeshownforbothaxes.
Pic26
Note:Pressingbutton3(ESC)exitsManualGradeMatchandchangestheunittomanualmode..
6.6 Axis Alignment
6.6.1 Automatic Axis Alignment
AutomaticAxisAlignment mode adjusts automatically the direction
thegradeaxisispointingtothereceiver’slocationbyanelectronically
simulationofrotatingtheunitonitsbasetomatchthehub.UsingAxis
Alignment,thelaseraxiscanbealignedtoonedirectionhub(upto150
m(490ft)locatedononeaxisateachsideofthelaser.
1. Set up the laser over the reference point.
2.PlacethegraderodwiththeattachedHL760receiveratthedesired
direction hub.
3.Usethe sighting guideson thetop ofthe laserto alignthe laser to
the receiver. Turn the laser on the tripod until it is roughly aligned to the receiver’s position (the alignment
rangeforbothaxesis+/-40°).
4.PressandreleasetheMENUbuttonattheStandardDisplayandselectAxisAlign.(Pic27)
5.SelectthedesiredaxisY(Pic28)orX(Pic29)orYandX(Pic30)thenpressbutton4tostartAxisAlign.
Pic28Axis
AlignmentYAxis
Pic29Axis
AlignmentX-Axis
Pic30AxisAlignment
YandX-Axis
Note:Adjusting the receiver intothe beam before starting the automaticAxisAlignment reduces the time
neededfornishingthealignment.
mm
Pic27Axis
Alignmenthorizontal