5700A5720A系列II多功能校准器

系列II多功能校准器用户手册操作指南WFuseandLineCAUTIONFORFIREPROTECTIONREPLACEWITHA250VFUSEOFINDICATEDCAUTIONFORFIREPROTECTIONREPLACEWITHA250VFUSEOFINDICATEDFUSE-FUSE-S2S3S2S3T125AT125ABasic

LinePowerLabelandSwitch

Tosettheoutput,simplypressthefollowingsequenceofkeystoselectanoutputfunctionandamplitude:Forexample,tosettheoutputto10mVdc,1mVETosetanacoutput,pressthefollowingadditionalkeys:[numerickeys][multiplier]HEForexample,tochangethepresent10mVdcto10mVac@1.8kHz,8KHTochangetheoutputbacktodc,H+AShortCalibrationIfyouarenotfamiliarwiththeCalibrator,youwillfindthatthefollowingexercisequicklyteachesyousomeimportantfrontpaneloperations.WarminguptheWhenyoufirstturntheCalibratoron,youshouldletitwarmupfor30minutes.ThisensuresthattheCalibratormeetsorexceedsitsspecifications.Exercise:RunningdcZeroDCZeroisabriefinternalprocessthatremovesoffseterrors.ThespecificationsrequirethatyourundcZeroatleastevery30days.TorundcZero,pressthefollowingsequenceofSetupMenusCalPressanykey,thenpressPtwicetoreturntonormalConnectingaTypicalconnectionsforhandheldandbenchtopmetersareshownonthenextpage.ThediagramsshowtheuseofFlukeModel5440-7002LowThermalCables.Othertypesofcablemaybeusedforthisexercise.Toconnecteithertypeofmeter,proceedasVerifythattheCalibratorison,andisinstandbymode(STANDBYindicatorlit).IfSetthemetertothelowestrangethatreads10VConnecttheshieldlead(ifyourcablesareshielded)toVGUARDontheVerifythatbothXandxareoff.PressthemiftheyareConnectthemeterinputLOtotheCalibratorOUTPUTConnectthemeterinputHItotheCalibratorOUTPUT::EX::EX:EXApplyingadcApply10Vdctothemeterbypressingthefollowingsequenceof VECheckingtheCalibratorPresss.Thetotaluncertaintyforthe10VyouareapplyingtothemeterisdisplayedontheControlDisplay(thelargedot-matrixdisplayontherightsideofthefrontpanel).Thisnumberdependsonthesettingofthecalibrationcycleandspecificationconfidencelevelinasetupmenu.Exercise:ActivatingErrorChancesarethemeterreadssomethingotherthanexactly10V.Toquicklychecktheerrorofthemeter,turntherotaryknobtoobtainameterreadingofexactly10V,andreadtheerrorofftheControlDisplay.Turningtheknobisallittakestoactivateerrormode.Whenyouturntheknob,theleastsignificantdigitishighlighted.Thisdigitchangesasyouturntheknob.Tochangeahigherorderdigit,therebyspeedinguptheadjustmentrate,press<.TheerrorontheControlDisplayisacombinationofoffset,scale,andlinearityerrors.CheckingtheMeter’sHigherandLowerTocheckthemetererrorat100Vdc,firstsetthemeterrange(ifapplicable)tothelowestrangethatreads100V.PressYO.Thissetsanewreferenceequaltotentimestheintostandbywhenitcrossesthesafetythresholdfrombelow22Vtoover22V.)Turntherotaryknobtore-activateerrormodeanddeterminethemetererrorat100V.NowpressZZ.Setthemeterrangeswitch(ifapplicable)tothelowestrangethatreads1V.errormode.Exercise:ApplyinganacThereisno“acmode”switchontheCalibrator.YouchangeadcoutputtoacbyenteringTotestthemeterat10Vat1kHz,setthemetertoread10Vac,press1V,then1KHEO.AdjusttherotaryknobforareadingonthemeterofexactlyTotestthemeter’sflatness,pressa.The0.1Hzdigitishighlighted.Press<fourtimes.Turntheknobtochangethe1kHzdigituntiltheCalibratorissetto10kHz.Pressaandturntheknobagaintocheckthemeter’saccuracyat10kHz.Eachtimeyouchangethefrequency,youneedtowaitfortheCalibratoroutputtosettle(the“u”annunciatorwillgoout).Thisendsthefrontpanelexercise.Tozerotheoutputandgotostandby,pressFrontPanelFollowingisabriefdescriptionoftheCalibrator’sfrontpanelOutputDisplay(LeftShowsoutputamplitudeandfrequency.Thetoplineshowstheactiveoutputvalueinuptoeightdigits,plusapolaritysign.Thebottomlineshowsoutputfrequencyinfivedigits.AnnunciatorsbelowtheamplitudelineontheoutputdisplayindicatethefollowingactiveOPERATELitwhenanoutputisactiveatthebindingpostsorauxiliaryamplifier.STANDBYLitwhentheCalibratorisinstandby. LitwhentheCalibratorisaddressedovertheIEEE-488 LitwhentheCalibratoroutputisphaselockedtoasignalattherearpanelPHASELOCKconnector. LitwhentheCalibratoroutputhasaprogrammedphasedifferencewithasignalattherealpanelVARIABLEPHASEOUTconnector. (Unsettled)Lightswhentheoutputischanged,andremainslituntiltheoutputsettlestowithinspecification.ControlDisplay(RightShowsdataentries,UUTerroradjustments,softkeylabels,andotherpromptsandmessages.Eachsoftkeylabelidentifiesthefunctionsofthesoftkeythatappearsdirectlybelowit.Allofthesoftkeylabelsthatappearonthedisplayatoncearereferredtoasamenu.Whenyouaccessthefunctionprovidedthroughthesoftkeys,youopenupothermenus,containingnewsoftkeylabels.DisplayScreenBoththeOutputandControldisplaysblankautomaticallyafter30minutesofinactivity,unlesstheCalibratorisinoneoftheoperatingstatesthatoverridesthescreensaver.Ifthescreensaverhasactivated,youcanrestorethedisplaybypressingC.Pressinganotherkeyorturningtheknobrestoresthedisplayandperformsthecommandsentbythekeyorknob.ThescreensaverdoesnotifanypartoftheSetupmenuisduringremoteduringcalibrationorwhenanerrormessageisFrontPanelTogglestheCalibratorbetweenoperateandstandbymodes.Instandbymode,theOUTPUTbindingpostsareinternallydisconnectedfromtheCalibrator.TheCalibratorpowersupinstandbymode.5700A与5720A多功能的高精度校准器，专门设计用于满足电学校准工作的需求。产品可输出交直流电压、交直流电流和电阻。宽带电压选件交流带宽从10Hz到30MHz。两款产品均可与5725A以及52120A系列放大器兼容。两款产品均可通过MET/CALPlus校准软件实现自动化。主要技术指标功能范围5700A最优的1年指标直流电压0到±1100V±7.0ppm交流电压220μV到1100V,10Hz到1MHz±75ppm电阻0到100MΩ按×1和×1.9的序列共18个值±12ppm直流电流0到±2.2A(使用5725A时到11A)±50ppm交流电流9μA到2.2A(使用5725A时到11A)10Hz到10kHz±140ppm宽带交流电压选件300μV到3.5V,10Hz到30MHz±0.4%CableOutputCableDCACVoltage10ACCurrent2A,10DCCurrent2ALowThermalEMFTestLeads(5440A-7002)ortwistedshieldedACVoltage>10SENSE/GUARD:TriaxialcableorTwinax(e.g.,Alpha2829/2).OUTPUT:Or:SENSE:Coaxial,OUTPUT:CoaxialGUARDLead:SeparateACCurrentwithTriaxialWideband3feet(1m)50coaxialcablewithType“N”maleconnectorsuppliedwiththeoption.A50feedthroughterminatorisalsosuppliedforconnectingtometerswithimpedancehigherthan50.Voltage-BoostedOutput,5205Aor5215AUsethecablesuppliedwiththeVoltage-BoostedOutput,LowThermalEMFTestLeads(5440A-7002).(OutputisattheCalibratorfrontpanel.)Current-BoostedOutput,5725A,5220A16-gaugeorheaviertwisted-pairinsulatedwire,a