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1、GettingStartedwithLabVIEWVirtualInstrumentsApproximateTimeYoucancompletethisexerciseinapproximately30minutes.BackgroundLabVIEWprogramsarecalledvirtualinstruments,orVIs,becausetheirappearanceandoperationimitatephysicalinstruments,suchasoscilloscopesandmu
2、ltimeters.LabVIEWcontainsacomprehensivesetoftoolsforacquiring,analyzing,displaying,andstoringdata,aswellastoolstohelpyoutroubleshootcodeyouwrite.InLabVIEW,youbuildauserinterface,orfrontpanel,withcontrolsandindicators.Controlsareknobs,pushbuttons,dials,a
3、ndotherinputmechanisms.Indicatorsaregraphs,LEDs,andotheroutputdisplays.Afteryoubuildtheuserinterface,youaddcodeusingVIsandstructurestocontrolthefrontpanelobjects.Theblockdiagramcontainsthiscode.YoucanuseLabVIEWtocommunicatewithhardwaresuchasdataacquisit
4、ion,vision,andmotioncontroldevices,aswellasGPIB,PXI,VXI,RS232,andRS485instruments.OverviewInthefollowingexercise,youwillbuildaVIthatgeneratesasignalanddisplaysthatsignalinagraph.Youwillbuildandcustomizeauserinterfacethatallowsyoutocontroltheamplitudeoft
5、hesignalandeasilydisplayyourdata.1CompletedExercise2Step-by-StepInstructions1.LaunchingLabVIEWTheGettingStartedwindowappearswhenyoulaunchLabVIEW.YoucanopentheLabVIEWGettingStartedwindowbydoingeitherofthefollowing:a.Double-clicktheLabVIEWicononyourdeskto
6、p,orb.IntheWindowsStartmenu,navigatetoPrograms»NationalInstruments»LabVIEW8.5»LabVIEWTheGettingStartedwindowisusedtocreatenewVIs,viewthemostrecentlyopenedLabVIEWfiles,findexamples,andlaunchtheLabVIEWHelp.Youalsocanaccessinformationandresourcestohelpyoul
7、earnaboutLabVIEW,suchasspecificmanuals,helptopics,andresourcesontheNationalInstrumentsWebsite,ni.com.TheGettingStartedwindowdisappearswhenyouopenaVIandreappearswhenyoucloseallopenfiles.YoucanalsodisplaythewindowfromanopenVIbyselectingView»GettingStarted
8、Window.32.OpeningaNewVIfromaTemplateLabVIEWprovidesbuilt-intemplateVIsthatincludethefunctions,structures,andfrontpanelobjectsyouneedtogetstartedbuildingcommonmeasurementapplications.CompletethefollowingstepstocreateaVIthatgenerat
