11
Whilethelaserissearchingandadjustingthebeamtotheon-gradeposition,
theHL760displayshowsaashing–GM–.
WhenGradeMatchhasbeencompleted,theHL760goesbacktothestandard
elevationdisplay.Theremotecontrolaswellasthelaserwilldisplaythenal
measured grade value.
Note:IfGradematchcan’tbecompletedbycheckingthelimits,thelasercomes
withanErrormessage(GradeMatchhasFailed)whichcanbe deleted with
button 4(OK).TheHL760goesbacktostandardelevationindication.
6.5 Manual Grade Match
NavigatetothemenuGradeMatch(Pic20).ChoosethesubmenuGradeMatchMan.(Pic25)
Pic25
GradeMatchmanual
InManualGradeMatch,thebeamonbothaxescanbeadjustedtothereceiver‘son-gradeposition,e.g,when
otherreceiversastheHL760areused.ThegradefortheY-axiscanbeadjustedwithbutton5/8 while button
6/7adjusttheX-axis.DuringManualGradeMatchacrossedvialandangle(Pic26)symbolappearnextto
thecontinuouslychangingY-andX-axisgradevalue.Afteradjustingtothereceiver’son-gradeposition,press
button 2(OK)togobacktoautomaticmodewherethenalgradevaluewillbeshownforbothaxes.
Pic26
Note:Pressingbutton3(ESC)exitsManualGradeMatchandchangestheunittomanualmode..
6.6 Axis Alignment
6.6.1 Automatic Axis Alignment
AutomaticAxisAlignment mode adjusts automatically the direction
thegradeaxisispointingtothereceiver’slocationbyanelectronically
simulationofrotatingtheunitonitsbasetomatchthehub.UsingAxis
Alignment,thelaseraxiscanbealignedtoonedirectionhub(upto150
m(490ft)locatedononeaxisateachsideofthelaser.
1. Set up the laser over the reference point.
2.PlacethegraderodwiththeattachedHL760receiveratthedesired
direction hub.
3.Usethe sighting guideson thetop ofthe laserto alignthe laser to
the receiver. Turn the laser on the tripod until it is roughly aligned to the receiver’s position (the alignment
rangeforbothaxesis+/-40°).
4.PressandreleasetheMENUbuttonattheStandardDisplayandselectAxisAlign.(Pic27)
5.SelectthedesiredaxisY(Pic28)orX(Pic29)orYandX(Pic30)thenpressbutton4tostartAxisAlign.
Pic28Axis
AlignmentYAxis
Pic29Axis
AlignmentX-Axis
Pic30AxisAlignment
YandX-Axis
Note:Adjusting the receiver intothe beam before starting the automaticAxisAlignment reduces the time
neededfornishingthealignment.
mm
Pic27Axis
Alignmenthorizontal