labview37219.docx

labview37219.docx

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labview37219

100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage1of13

CertificationOverview

TheNationalInstrumentsLabVIEWCertificationProgramconsistsofthefollowingthree

certificationlevels:

1.CertifiedLabVIEWAssociateDeveloper（CLAD）

2.CertifiedLabVIEWDeveloper（CLD）

3.CertifiedLabVIEWArchitect（CLA）

Eachlevelisaprerequisiteforthenextlevelofcertification.TheCLADcertificationisa

prerequisitetotakingtheCLDexam.TheCLDcertificationisaprerequisitetotakingthe

CLAexam.Therearenoexceptionstotherequirementsforeachexam.

ACLADdemonstratesabroadandcompleteunderstandingofthecorefeaturesand

functionalityavailableintheLabVIEWFullDevelopmentSystemandpossessesthe

abilitytoapplythatknowledgetodevelop,debug,andmaintainsmallLabVIEW

modules.ThetypicalexperiencelevelofaCLADisapproximately6to9monthsinthe

useoftheLabVIEWFullDevelopmentSystem.

ACLDdemonstratesexperienceindeveloping,debugging,anddeployingand

maintainingmedium-to-largescaleLabVIEWapplications.ACLDisaprofessionalwith

cumulativeexperienceofapproximately12to18monthsdevelopingmediumtolarge

applicationsinLabVIEW.

ACLAdemonstratesmasteryinarchitectingLabVIEWapplicationsforamultideveloperenvironment.ACLAnotonlypossessesthetechnicalexpertiseandsoftware

developmentexperiencetobreakaprojectspecificationintomanageableLabVIEW

components,butalsohastheexperiencetoseetheprojectthroughbyeffectivelyutilizing

projectandconfigurationmanagementtools.ACLAisaprofessionalwithacumulative

experienceofapproximately24monthsindevelopingmediumtolargeapplicationsin

LabVIEW.100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage2of13

ExamOverview

YourtestcomputerwillhavetheLabVIEWFullDevelopmentSystemversion2011or

laterinstalledfordevelopingyourapplication.AfterOctober1,2012,LabVIEW2012

maybeinstalled.

Contactyourproctorortestingcenterpriortotheexamtogetadditionaldetailsand

familiarizeyourselfwiththespecificLabVIEWversionthatwillbeusedtodevelopyour

application.

Youmayrequesttheproctortoallowyouafewminutesbeforeyourexamtocustomize

theLabVIEWenvironmentforyourneedsortofamiliarizeyourselfwiththe

environment.Theproctorwillonlyhandovertheexamwhenyouarereadytobegin

workingontheexam.

Pleasenotethatyouwillnotreceiveextratimefortheexamtocompensatefor

unfamiliaritywiththeLabVIEWenvironment.

RefertoLabVIEWDevelopmentSystemscomparisonfordetailsaboutLabVIEWFull

DevelopmentSystemfeatures.

ExamDuration:

4hours

Styleofexam:

Practical–applicationdevelopment

Passinggrade:

70%

Theexamvalidatesproblemsolvingskills,knowledge,andexperienceinthe

developmentofmeasurementandautomationapplicationsusingLabVIEW.Theexam

involvessoftwaredevelopmentonlyanddoesnotinvolveanyhardware.

TheuseofresourcesavailableinLabVIEW,suchastheLabVIEWHelp,examples,and

templatesareallowedduringtheexam.ExternallydevelopedVIsorresourcesare

prohibited.

TheexampacketwillincludeaUSBmemorystickwithaVIandcontrolsinafolder

hierarchythatyoumustusetodevelopyouapplication.Youmustnotrenamethe

mainVI,providedcomponents,oralterthefolderhierarchy.Allyourdevelopment

VIsandcontrolsmustbesavedintheprovidedfolderhierarchy.

Adetailedapplicationspecificationwillbeprovided.Thespecificationsconsistof

generalandtechnicalrequirementsfortheapplication.Youmustnotdetachthebinding

staple,copy,orreproduceanysectionoftheexamdocument.Failuretocomplywill

resultinfailure.

Afteryouhavecompletedyourexam,youmusttransferthesolutiontotheprovidedUSB

memorystick.PleasevalidatethecopiedsolutionontheUSBstickbeforereturningitto

yourproctor.

Youmustnotdetachthebindingstaple,copy,orreproduceanysectionorsolutionofthe

exam.Failuretocomplywillresultinfailure.100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage3of13

ExamTopics

1.DesignConcepts

2.UserInterfaceDesign

3.BlockDiagramLayoutandStyle

4.ProgrammingPractices

5.SubVIDesignPractices

6.ArchitectureSelection

7.Timing

8.ErrorHandling

9.Documentation

10.Testing100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage4of13

ExamTopics（Overview）

TopicSubtopic

1.DesignConceptsa.Modularity,scalability,readability,andmaintainability

b.Cohesionandcoupling

c.Hierarchicaldesign

d.Filestructure

2.UserInterface（frontpanel

window）DesignPractices

a.Coloringscheme

b.Groupingandaligningobjects

c.Settingproperties

d.Customizingobjects

e.Statemanagement

i.Staticordynamic

ii.Atinitializationandapplicationstop

f.Icondesign

3.BlockDiagramDesign

Practices

a.Dataflow

b.Enhancingreadability

4.ProgrammingPracticesa.Dataelements

b.FunctionsandsubVIs

c.Programmingstructures

d.Datastructures

e.References,PropertyNodes

5.SubVIDesignPracticesa.Modularityandcohesion

b.Frontpanellayout

c.Connectorpaneandicon

6.DesignPatternSelectiona.Scalabilityandmaintainability

b.Responsiveandnon-blocking

c.Designpatterns:

i.Simplestatemachine

ii.Userinterfaceeventhandler

iii.Queuedmessagehandler

iv.Producer/consumer（data）

v.Producer/consumer（events）

vi.Functionalglobalvariable

7.Timinga.Timingfunctions

b.Timingmechanisms

i.Eventstructuretimeout

ii.Synchronizationfunctiontimeout

iii.Timedstructures

c.TimingExpressVIsandfunctionalglobalvariables

8.Errorsa.Errorhandling

b.Errorreporting

9.Documentationa.Frontpanelwindow

b.Blockdiagram

c.VIProperties

10.Testinga.Codeanddocumentationreview

b.Functionality

d.Errors100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage5of13

CLDTopicsDetails

1.DesignConcepts

a.Modularity,scalability,readability,andmaintainability

1.DevelopaLabVIEWapplication（VI）thatis:

a）Modular–VIfunctionalityissubdividedintomodulesorsubVIs

b）Scalable–VIrequireslittleornochangetotheuserinterfaceorblock

diagramtohandlelargerdatasetsoradditionalprogramstates

c）Readable–VIconveysinformationaboutitselfthroughgood

documentationandprogrammingstyle

d）Maintainable–VIfacilitatesmodificationswithoutchangingtheoriginal

intentofthemoduleorapplication

b.Cohesionandcoupling

1.DevelopLabVIEWmodulesthatare:

a）Highlycohesive—modulehasaclearlydefinedandpublishedgoal

b）Looselycoupled—moduleminimizesdependencyonothermodulesfor

completingorcomplementingitsfunctionality

c.Hierarchicaldesign

1.DevelopaLabVIEWVIthatutilizestheprecedingtechniquestocreatea

logicalhierarchicaldesign

d.Filestructure

1.OrganizetheVIsinthefilesystemtoreflectthehierarchicalnatureofthe

software

2.Createafolderfortheapplicationandgiveitarelevantname

3.Makethemain（top-level）VIaccessibleintheapplicationfolder

4.CreateseparatefoldersforsubVIsandcontrols

2.UserInterface（frontpanel）DesignPractices

a.Coloringscheme

1.DesigntheuserinterfaceofaVIusingaconsistentsystemcoloringscheme

2.Usepastelcolorswhereneededandavoidtheuseofbrightcolors

3.UseguidelinesfromtheLabVIEWStyleChecklisttopicoftheLabVIEWHelp

forcoloringschemesofbackgroundanduserinterfaceobjects

b.Groupingandaligningobjects

1.Groupuserinterfaceobjectsthatarelogicallyrelatedbyusingarrays,clusters,

ordecorations

2.Alignobjectsandtheirlabelstoprovideauniformandconsistentlayout

c.Settingproperties

1.Chooseappropriatesettingsforthefrontpanelobjecttoimproveusabilityand

performance

d.Customizingobjects

1.Changethecosmeticappearanceofafrontpanelwindowobject

2.Extendapplicationscalabilitybycreatingatypedefinitionorstricttype

definitionofacustomcontrol100900A-01

CertifiedLabVIEWDeveloper（CLD）

CertificationandExamOverview

©2012NationalInstrumentsCorp.AllrightsreservedPage6of13

e.Statemanagement

1.Setthevalueorattributesofacontrolbystaticallyusingthepropertydialog

boxofanobject,ordynamicallyusingPropertyNodes

2.Initializeorsetcontrolvaluesatapplication,load,start,andstop

f.Icondesign

1.Designmain（top-level）VIandsubVIiconstorepresenttheapplicationor

modulefunctionality

2.Maintainaconsistentanduniformicondesignschemebetweenmainand

subVIs

3.BlockDiagramDesignPractices

a.Dataflow

1.EnforcedataflowbyusingerrorterminalsonVIsandPropertyNodes

2.EnforcedataflowbyusingSequencestructuresforVIs/functionsthatdonot

haveerrorterminals

b.Enhancingreadability

1.Developblockdiagramstofitascreenresolutionof1024x768

2.Limitblockdiagramsizesothatauserhastoscrollinonlyonedirection

3.EvenlyspaceVIsandfunctions–avoidcrowdingtoomanyVIsorfunctionsin

asmallarea

4.EvenlyalignVIsandfunctionsusingaconsistentscheme

5.Avoidwirebendsandkeepthewiresasstraightaspossible

6.Connectwiressothattheyappeartobeconnectedtothecorrectterminals

7.WireVIsandfunctionstofollowleft-to-right