Wireless LAN Test Requirements.docx

Wireless LAN Test Requirements.docx

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WirelessLANTestRequirements

1.0Purpose

ThepurposeofthisdocumentistodescribethetestrequirementsfortheAskeyWirelessLANUnit.ThisrequirementisforinternalWirelessLANtesting.

TestPhilosophy

Thephilosophyduringmanufacturingtest,whichincludesIn-CircuitandFunctionalTest,istofacilitateasmuchtestingaspossibleatIn-CircuitTestwheremaximumfaultisolationmaybeachievedataleveragedcost.Functionaltestingshallthenverifybasicproductfunctionalityfromanend-userperspective,i.e.thattheunitsyncs-uptoaGoldensampleacrossapackettransmit,rateadaptivemodewithinthespecifiedraterange,atthetargetmargin,andtransfersdatacorrectly.Functionaltestmustverifyconfigurationofthedevice.SampletestingforOn-GoingTesting（ORT）reliabilityandOutputQualityControl（OQC）auditsmustbedone.

2.0TheFlashProgrammingProcess

belowillustratewherefirmwareandprogrammablecodemaybeinstalledintotheunit.

1.ECN（EngineeringChangeNotice）andNewProductOriginalDatafilesmustbereleasedwhenRDreleasedfirmwarefilesbyemailordisk,

2.PEEngineersreceivedthefirmwarefileandconfimedthelatestECN

3.PEEngineersverifyfirmware,confirmchecksumandmakeMaster

4.PEassistantsavingfirmwarefilesandMasterwhenverificationpass.

5.FirmwareisrejectedandPEengineersgiveafeedbacktoRDwhenverificationNG

6.TEengineerswriteSOP

7.PDoperatorborrowsMasterfromPEassistantandmakearecord

8.QCchecksthefirstunitwhichismakedbyPDoperator.

9.PDoperatorreturnsMasterwithin3daysandPEengineerconfirmstheMasteragain.

Figure1.FlashProgrammingProcess

3.0FunctionalTestProcess

3.1General

ThissectiondescribesthetestsexecutedtocompletethefunctionalverificationoftheWirelessLANinaccordancewiththeEngineeringTestSpecification.Theteststationisdesigned/builtin-housebyAskeyTestEngineering.ThetestEquipmentisshowninTable1.

AVisualBasictestprogramcontrolsallequipmentandconnectionsduringthetest,andmakesGo/No-Godecisions.Thefunctionaltestflowdiagramisshowninfigure2.

ThefunctionaltestitemisshowninTable2.

PCstationblockdiagramisshowninFigure3.

TXstationblockdiagramisshowninFigure4.

RXstationblockdiagramisshowninFigure5.

WriteMACandCheckMACstationblockdiagramisshowninFigure6.

3.1.1belowillustratethetestequipmentlistforallfunctionalteststation

Table1.TestEquipment

3.1.2belowillustratethefunctiontestflowchart,thetestorderisimportant,shopfloorsystemwillcontrolthateveryunitmustcomplywiththisflowchartandallstationsinserttestrecordintodatabase.

Theerrorcodewillbeshownintheprogramwhenyoudisobeytherule.

Figure2.FuntionalTestFlowchart

3.1.3belowillustratethefunctiontestitem,thefunctiontestdescriptionisshowninthistable

Remark:

thefunctionaltestdetailisnotconstant,allthetestcriteriaisbaseoncustomers’request

Table2.FuntionalTestItem.

3.1.4belowillustratePCstationblockdiagram.Theshieldingbox’sisolationisimportantwhenwirelessLANunitistested,becauseelectromagneticwaredisturbingeachotherthatmustbepreventinaregularshieldingbox.

Shieldingboxisolationmustbelessto-50dB

Dc-BlockwillbeconnectedwithPowermetertoprotectPowerSensor.

Thecablelossmeasuremustbeexacttoassuretestquality.

Figure3.PCStationBlockDiagram

3.1.5belowillustrateTXstationblockdiagram.Theshieldingbox’sisolationisimportantwhenwirelessLANunitistested,becauseelectromagneticwaredisturbingeachotherthatmustbepreventinaregularshieldingbox.

Shieldingboxisolationmustbelessto-50dB

Dc-BlockwillbeconnectedtoprotectSpectrumAnalyzer

Thecablelossmeasuremustbeexacttoassuretestquality.

Figure4.TXStationBlockDiagram

3.1.5belowillustrateRXstationblockdiagram.Theshieldingbox’sisolationisimportantwhenwirelessLANunitistested,becauseelectromagneticwaredisturbingeachotherthatmustbepreventinaregularshieldingbox.

Shieldingboxisolationmustbelessto-50dB

Thecablelossmeasuremustbeexacttoassuretestquality.

Figure5.RXStationBlockDiagram

3.1.6belowillustrateWriteMACandCheckMACstationblockdiagram,

Don’tchangetheMAClabelarbitrarily.

Figure6.WriteMAC&CheckMACStationBlockDiagram

3.1.7DUTInterfaceDescription

TheDUTisconnectedtotheTestStationusingPCItoPCI-Efixturesorcables.Interfacesareprovidedforpower,RFCable,EthernetandUSBconnectors.ThewirelessDUTinterfaceincludePCI,PCI-E,Mini-PCI,Cardbus

3.1.8LogPass/FailrecordwithDUTSerialNumbertoShopfloordatabase.

3.2On-GoingReliabilityTest（ORT）

Purpose

Thepurposeofthisprocessistocompressaproductsearlymortalityperiodandreduceitsfailureratetoacceptablelevelsasquicklyaspossible.Ideallytestingcarriedoutperthisprocedurewillassistinpreventinglatentpart,manufacturingprocess.Throughtheuseofeffectivecorrectiveactionswhenfailuresoccur,thisprocesscanandwilleliminatefailuresthatwouldotherwisegouncheckedwithroutinequalitytestsandprecipitatethemselvesinthefield.TestingistotakeplaceonexistingproductswithactiveelectronicpartsatthepostFunctionalTeststage.Thisprocessprovidesanearlywarningindicationofaproductscontinuedabilitytomeetoperationalrequirements.Testingisusedinadditiontoroutineproductiontestsi.e.Functional,otherQualitytests.Testingisconsideredmoreextensivethanroutineproductiontests.

Flowchart

Figure7.ORTTestFlowchart

FunctionTest

Testpurpose

-Confimthatnormaloperationcancontinuouslyperformundernomaltemperature

Testcondition

-Testingtemperature:

25℃（Roomtemperature）

-Testingmode:

communicationLANtest

-Testingsamplerate:

6units

TXPowerLevel:

Figure8.ORTTXPowerTest

TestMethod

-TheDUTturnonthepower,Thenperformcommunication

-EvaluationWithcommunicationbyLANtestprogram

-UsingPowerMethermakesureproductTXpowerlevel

Burn-inTest

TestPurpose

-confirmthattheoperationperformsnormallyinthetemperaturerangespecifiedinthespecifications.

TestCondition

-Temperature:

ThemaxproductsafetySPECisperproductSPEC

Figure9.ORTTestTemperature

TestMethod

-SetDUTandACadaptoraccordingtostandardsetup.

-Puttheseintooven

-Setoventemperatureinaccordancewithtestcondition.

-Keeptimefloowtestflowchart.

-Aftertestfinishedcheckperformanceandappearance.

-Checkproductfunctionandappearance.

-PerformVisualcheckifthereisanytransformationofChassis,RearPanelandLabelsetc.

Procedure

FullytestedWirelessLANproductswillbeputintoatemperaturechamber

Theminimumcycletimeshouldbe24hours.

Ataminimum,theunitsmustbemonitoredforwirelessLANpingtheentiretest.Anylossofpingtestshouldbeevaluatedasafailure.

Allunitsmustbere-functionaltestedafterthetemperaturescreeningtoverifywirelessLANoperation.Anyfailuresatthepost-ORTfunctionaltestmustbeevaluatedasORTfailures.

ORTUnitSample

Randomsamplesofproductionproductshallbeselectedandtested.Samplerateshouldbeapproximately6pcsunitseachproductiondayforeachmodel.

3.3OutputQualityControlTest（OQC）

OQC

Arandomsampleof3-5%ofproductionshouldbere-testedtodetermineoperationofthewirelessLAN.Thistestshouldbeasubsetoftestsfromthefunctional（RX）testthatverifiesPER（packeterrorrate）,Sen（sensitivity）andcheckMAC.Thesetestsshouldverifyonly,notperformanyconfigurationoftheunit.