Chapter 5 Working in the Schematic Editing WindowAdvance 原理图设计进阶教案.docx
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Chapter 5 Working in the Schematic Editing WindowAdvance 原理图设计进阶教案.docx
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Chapter5WorkingintheSchematicEditingWindowAdvance原理图设计进阶教案
Chapter5WorkingintheSchematicEditingWindow(Advance)原理图设计进阶
前面我们已经学习乐如何使用Protel99SE绘制一般的电路原理图,但如果要使电路原理图绘制过程更加快速,结构层次更加清晰,交流更加方便,还需要学习更多的内容。
本章将继续学习前面还未介绍的过的实用功能,熟练掌握这些功能,可以大大提高设计者绘制电路原理图的水平。
我们将学习到
转换视角
快速复制
全局编辑
排列对齐
重新编号
电气检查
5.1ChangingYourViewoftheSheet
EachsheetyouopenwillappearonitsownTabintheintegratedDesignWindow.Youlook“through”thiswindowtoviewyoursheet.Youcanbringthesheetclosertoyou(zoomin),ormovethesheetaway(zoomout).TheViewmenuprovidesanumberofwaysofchangingyouviewofthedocument,includingaFitAllObjectsoption,wherethesheetwillbezoomedtofitalltheplacedobjects,andaFitDocument,wheretheentiresheetwillbedisplayed.Shortcutkeystochangeyourviewinclude:
●PageUptozoomin(veryuseful)
●PageDowntozoomout(veryuseful)
●Hometore-centerthescreenatthecurrentcursorposition
●Endtorefreshthescreen
5.2BrowsingtheSchematic
Whenyourdesignhasmanysheetsitcanbecomedifficultandtimeconsumingtolocateobjectsonthesheets.TosimplifythisprocesstheSchematicEditorincludespowerfulbrowsingfeatures.
SettheBrowsemodeatthetopoftheEditorPaneltoPrimitives,tobrowsethroughobjectsonthecurrentsheet,ortheentireproject.YoucanbrowsebyanyoftheobjecttypesavailableintheSchematicEdito
原理图编辑器有很强大的查找功能,把EditorPanel的Browse模式设为Primitive,你就可以查找原理图编辑器的任何对象了
●PressJumptojumptotheselectedobject,centeringitinthewindow.
●PressTexttojumptotheselectedobjectandpopupatexteditingdialogiftheobjecthasatextfield.
●PressEdittojumptotheselectedobjectandpopuptheobject’sattributedialog,allowingyoutoeditanyoftheobjectsattributes.属性
5.3Quick-CopyinganObject快速复制
TheSchematicEditorhasapowerfulfeatureforcopyingtheattributesofoneobjectintoasecondobjectofthesametype.
Forexample,letssayyouhaveacapacitorfloatingonthecursor,whenyouwouldreallyliketoplacearesistor.RatherthanpressingESCtogetridofthecapacitor,thenbrowsingthroughthelibrarytofindaresistor,youcanusethequick-copyfeaturetoturnthecapacitorintoaresistor.
你鼠标粘了个电容,但是你本来是要放电阻的.你不用退出,去找电阻.你可以用快速复制功能直接把电容变成电阻
Positionthecursor(withthefloatingcapacitor)overthe“source”object(anexistingresistorontheschematic),andpresstheINSERTkey.Therewillnowbearesistorfloatingonthecursor.YoucanalsoedittheattributesoftheobjectbeforeyouplaceitbypressingtheTABkey.
把粘着电容的鼠标放在源对象上(电路上存在的一个电阻),再按INSERT键.鼠标粘着的就变成电阻了.TAB属性.
5.4GlobalEditing全局编辑
Aswellasbeingabletoedittheattributesofasingleobject,youcanalsoapplytheseeditstootherobjectsofthesametypeonthecurrentdocument,orifyouwish,acrosstheentireproject.
全局修改,修改一组或是整个对象.
原理图编辑器不仅可以对单个对象进行修改,以可以对当前文档或整个数据库文件中具有同种属性的的对象同时进行属性的修改
Additionally,youcanfurtherdefineconditionsthateitherextendorrestrictglobalchanges.Forexample,changescanbeappliedtoallobjectsthatareselectedorallobjectsthatarenotcurrentlyselected,orthechangecanbeappliedwithoutregardtotheobject’sselectionstatus.Ifdesired,youcancreateacomplexsetofconditionsforapplyingchanges.
设计者可以编辑所有选中的,或是所有没选中的.或是不管对象是否被选中,设计者可以自定义一个对象编辑条件
Virtuallyeveryoneoftheseeditableobjectattributescanbegloballyapplied.Asimpleexamplewouldbechangingthecolorassignedtoallwiresegmentsassociatedwithaspecificnet.Inanotherinstanceyoumaywishtochangethefontofallnetlabels.Theseoptions(andmore)arepossiblewithglobalediting.Thepossibleapplicationsforglobalchangesarelimitedonlybytheimaginationofthedesigner.
实际上,那些具有可编辑属性的对象都是可以进行全局编辑修改的.比如与一个指定网络标号相连的所有导线,我们可以改变它们的颜色,或是改变所有网络标号的字体全局编辑修改的功能是很强大的,可以说只有想不到的,没有做不到的.
Thelargenumberofglobalchangeoptionsmaymakethisfeatureappearsomewhatcomplexatfirst.However,theprinciplesofapplyingglobalchangesarereasonablysimpleonceunderstood.Whenmastered,thisfeaturecanbeanimportantproductivitytoolthatcansaveagreatdealofmanualeditingofaschematic.
初学者常常被全局编辑对话框中大量的编辑选项弄的不知所措,实际上,这些编辑修改的规则是相当易懂的,熟练地掌握这种编辑方法,可以省去大量地手动修改工作
GlobalEditingStrategies
Whilethepresentationofglobalchangeoptionsmayappeardifferentlyinthevariousobjectdialogs,thestrategyusedisalwaysthesame.Thisdescriptionwilloutlinetheapproachtoglobalediting.
选择的对象不同,全局修改的选项也会有所不同,但基本用法是一致的,我们可以看看下面的例子:
被编辑对象的当前属性
要进行全局修改的对象的匹配属性
改变的属性将从本对象复制到所有匹配的对象
CurrentAttributes
Whenyoudouble-clickonanobject,youarepresentedwiththedialogforthattypeofobject.Thisdialogcontainsthecurrentvaluesorsettingsoftheattributesofthatobject.Changetheattributesyouwouldliketoalter.
双击对象,打开这种类型的对象属性对话框
InthedialogshownabovewearegoingtochangeallthedatanetlabelsfromD1,D2,etctoData1,Data2,andsoon.AsthisisastringsubstitutionwedonotneedtochangeanythingintheCurrentAttributes.
我们想把D1,D2改成Data1,Data2.其他不变
AttributestoMatchBy
AfterchangingtheattributespresstheGlobalbutton.Thedialogwillexpandtolookliketheoneshowninthepictureabove.InthecenterofthedialogtherebeacolumntitledAttributesToMatchBy.IntheAttributesToMatchBycolumnyoudefinehowtoidentifytheotherobjectsthatthischangeistoapplyto.
符合这个特征的将会被修改
Thechoicefieldhasthreeoptions:
Same(applyglobalchangesifthisobjectattributeismatchedinthetargetobject);Different(applyglobalchangesifthisattributeisnotamatchinthetargetobject)andAny(thedefault)whichappliesthechangeirrespectiveofwhethertheattributehasthesamevalueinbothobjects.
Same相同属性全局修改应用于与选定对象具有相同属性的对象
Different不同属性全局修改应用于与选定对象具有不同属性的对象
Any任意属性全局修改应用于所有对象
IftheMatchByattributesareallsettoanyandthetextfieldscontainthewildcardsymbol(*),thentheglobalchangewillapplytoallobjectsofthistype.UsecombinationsofMatchByattributestodefineaparticularsetofobjectstoapplythechangeto.ForthisexamplewesettheNetLabeltoD*,totargetallnetlabelsstartingwiththeletter“D”.
D*,D开头的所有网络标号
CopyAttributes
ThethirdcolumninthedialogistitledCopyAttributes.
对话框的第三列名字是CopyAttributes
Inthiscolumnyouspecifywhichoftheattributesyouwanttocopythechangesto,andiftheattributehasatextfieldwhatnewtextvaluetocopytoallmatchedobjects.
在此栏中进行要复制属性的选择,
Inthedialogshownweenterthestringsubstitutionthatwewishtoperform{D=Data}.ThesyntaxofStringSubstitutionis:
Ifyouwishtoreplacetheentirecontentsofthisfieldwithanewvalue,removethebraces,“{”and“}”andenterthenewvalue.
整个全换,直接输入Data,则所有的D*变成Data
Thebracesareusedwhenyouwishtoperformselectivestringsubstitutions,usingthesyntax{oldtext=newtext}.Thismeansyoucanchangeaportionofthestring"oldtext"to"newtext".Intheexampleshownearlierinthissectionwechangedtheletter“D”forthestring“Data”.
{旧文本=新文本}
Eample5-1利用全局编辑功能修改图件属性.avi3:
10节点大小和封装
5.5AligningObjects排列和对齐
Youcanalignagroupofselectedobjectsonbothaxes,bychoosingEdit->Align->Align.
Horizontal水平的
Vertical垂直的
NotesonAligningObjects
●Ensurethatonlytherequiredobjectsareselected–firstclearthecurrentselection(shortcut:
x,a).
确保只有你需要的对象被选中了.首先清楚所有被选对象(shortcut:
x,a).
●Selectalltheitemstobealigned.
你要对齐的都要选中
不要多选,不要少选
●UsetheEdit->Align->Alignmenuitemtopopthedialogifyouwanttoalignbothhorizontallyandvertically,foronedirectionyoucanjustpicktherequiredoption.
两个方向都变,选这个对话框,只变一个方向的,对应的选就是
●UsetheMoveprimitivestoGridoptiontoconstrainalignmenttothenearestgridpoint.
复选框,排列最整齐
●IfyouarenothappywiththealignmentuseEdit->Undotoremovethechange.
撤销
5.6AssigningandRe-assigningDesignators重新编号
Allpartsinyourdesignmusthaveauniquecomponentdesignator.Theprocessofre-assigningdesignatorsinyourdesigniscalledannotation.Thiscanbedoneatanystageinthedesignprocess,andwouldtypicallybedonewhenthedesigniscomplete.SelectTools->Annotatetoreassigntheschematicdesignators.Hereyoucanannotate:
每个组件都有一个元器件序号,重新编号的过程叫做annotation(注释),任何时候都可以做,一般是在最后做
AllParts
Reassignthedesignatorsforallpartsintheproject.Thisoptiondoesnotre-useanycurrentlyassigneddesignators.
所有组件重新编号,但是已经编好的编号不会再用
?
Parts
AssignadesignatortoallpartswhichcurrentlyhaveadesignatorofR?
C?
U?
etc.
编?
组件
ResetDesignators
setsalldesignatorsbacktoR?
C?
U?
andsoon.Usethisifyouwishtorenumberallcomponents,startingat1.
把所有的都设为?
先ResetDesignators复位,然后编所有组件的号.
Example5-2元器件自动编号.avi3:
16
5.7SchematicDesignVerification
TheSchematicEditorincludesatoolspecificallyforDesignverification,theElectricalRuleChecker(ERC).Thisprocessexaminestheschematicforbothelectricalinconsistencies,suchasanoutputpinconnectedtoanoutputpin,anddraftinginconsistencies,suchasunconnectednetlabelsorduplicatedesignators.
编辑器包括一个特殊的工具来进行最后的确认,Erc.输出连输出,或是没有连接的网络标号,或是两个元器件序号相同
SelecttheTools->ERCmenuitemtopopuptheSetupElectricalRuleCheckdialog.Thisisusedtoset-upandexecutetheElectricalRuleCheck.RunningtheERCproducestworesults.First,atextreportisgenerated,listingtheelectricalandlogicalviolationseitherfortheactivesheet,ortheentireproject.Secondly,errormarkersareplacedonthesheetsatthesiteofeachERCviolationasanaidintrackingandcorrectingreportedproblems.
Tools->ERC打开电气检查对话框.两个结果,一个报告,另外有问题的地方都会有个ERC符号,你好去改
5.7.1MarkingPointsThatYouDoNotWantFlaggedasErrors
TheremaybepointsinthedesignwhichyouknowwillbeflaggedasERCerrorsorwarnings,whichyoudonotwanttobeflagged.Tosuppressthese,placeaNoERCdirectiveateachpoint(Place->Dire
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