音频信号发生器毕业设计外文翻译

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1、本科毕业设计（论文）外文翻译原文学生姓名：何晓君院（系）：电子工程学院专业班级：测控0602班指导教师：薛晓书完成日期：2010年4月20日4ExpandingtheFeaturesofaVIYoucanchooseoneofmanyLabVIEWVItemplatestouseasastartingpoint.However,sometimesyouneedtobuildaVIforwhichatemplateisnotavailable.Thischapterteachesyouhowtobuildandcust

2、omizeaVIwithoutusingatemplate.BuildingaVIfromaBlankTemplateInthefollowingexercises,youwillopenablankVIandaddExpressVIsandstructurestotheblockdiagramtobuildanewVI.YouwillbuildaVIthatgeneratesasignal,reducesthenumberofsamplesinthesignal,anddisplaystheresultingdat

3、ainatableonthefrontpanel.Whenyoucompletetheexercises,thefrontpaneloftheVIwilllooksimilartothefrontpanelinFigure3-1.Youcancompletetheexercisesinapproximately30minutes.Figure3-1.FrontPanelfortheReduceSamplesVIOpeningaBlankVIIfnotemplateisavailableforthetaskyouwan

4、ttocreate,youcanstartwithablankVIandaddExpressVIstoaccomplishthespecifictask.CompletethefollowingstepstoopenablankVI.1.IntheLabVIEWdialogbox,clickthearrowontheNewbuttonandselectBlankVIfromtheshortcutmenuorpressthekeystoopenablankVI.Noticethatablankfront

5、panelandblockdiagramappear.4NoteYoualsocanopenablankVIbyselectingBlankVIfromtheCreatenewlistinTheNewdialogboxorbyselectingFile»NewVIfromthefrontpanelorblockdiagrammenubar.2.IftheFunctionspaletteisnotvisible,right-clickanyblankspaceontheblockdiagramtobringupthet

6、emporaryversionoftheFunctionspalette.Clickthethumbtack,shownatleft,intheupperleftcorneroftheFunctionspalettetoplacethepaletteonthescreen.NoteYoucanright-clickonablankspaceontheblockdiagramorthefrontpaneltobringuptheFunctionsorControlspalettes.AddinganExpressVIt

7、hatSimulatesaSignalCompletethefollowingstepstofindtheExpressVIyouwanttouseandthenaddittotheblockdiagram.1.IftheContextHelpwindowisnotvisible,pressthekeystoopentheContextHelpwindow.YoualsocanpresstheShowContextHelpWindowbutton,shownatleft,toopentheContex

8、tHelpwindow.2.SelecttheInputpaletteontheFunctionspaletteandmovethecursorovertheExpressVIsontheInputpalette.NoticethattheContextHelpwindowdisplaysinformationaboutthefunctiono