>> P.261
PrecautionsObservethefollowingprecautionsCompatibilityYourLaserScanMicrometerhasbeenadjustedtogetherwiththeIDUnit,whichissuppliedwiththemeasuringunit.TheIDUnit,whichhasthesamecodenumberandthesameserialnumberasthemeasuringunit,mustbeinstalledinthedisplayunit.ThismeansthatiftheIDUnitisreplacedthemeasuringunitcanbeconnectedtoanothercorrespondingdisplayunit.TheworkpieceandmeasuringconditionsDependingontheworkpieceshape,andthesurfaceroughness,measurementerrorsmayresult.Ifthisisthecase,performcalibrationwithamasterworkpiecewhichhasdimensions,shape,andsurfaceroughnesssimilartotheactualworkpiecetobemeasured.Ifmeasurementvaluesshowalargedegreeofdispersionduetothemeasuringconditions,increasethenumberofscansforaveragingtoimprovethemeasurementaccuracy.ElectricalnoiseinterferenceToavoidoperationalerrors,donotroutethesignalcableandrelaycableoftheLaserScanMicrometeralongsideahighvoltagelineorothercablecapableofinducingnoisecurrentinnearbyconductors.Groundallappropriateunitsandcableshields.ConnectiontoacomputerIftheLaserScanMicrometeristobeconnectedtoanexternalpersonalcomputerviatheRS-232Cinterface,ensurethatthecableconnectionsconformtothespecification.LasersafetyMitutoyoLaserScanMicrometersusealow-powervisiblelaserformeasurement.ThelaserisaCLASS2IEC60825-1device.Warningandexplanationlabels,asshownontheright,areattachedtotheLaserScanMicrometersasisappropriate.5-48