西门子可靠性培训资料.ppt

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1、M.Chbat,S.Eberlin,M.Tochtermann,T.JuhnkehiT7500Multi-HaulDWDMsystemProductReliabilityUpdateProcesses,Status,andMeasuresSept15,2004SiemensReliabilityProcessOverviewOpticalComponents:EDFAVOAGTCPassivesNegotiationswithsuppliers:ModelingFieldexperienceSuppliercomparisonElectricalComponents:Res

2、istorsCapacitorsTransistorsICsetc.Standards:SN29500IEC61709MechanicalComponents:ConnectorsBoardsetc.Standards:SN29500IEC61709CardFITRateFeedbackfromFieldReturnRateProductReliabilityAssuranceProcessReference:Siemensstandard;inagreementwithinternationalstandardsIEC61709productdefinitionprod

3、uctdevelopmentproductdeliveredrequirementsalignedwithtechnologybasisfailurerateallocationtoindividualcardsinvolvementofcomponentengineering&QAcardfailureratesonbasisofpartslistscomponentratingbydesignnew&criticalcomponentsspecificationnewcomponents&supplierauditsinproductionfailurecontro

4、lfieldreturnanalysis&thresholdmonitoringconservativedatabasedonpredictedvaluesregularcomponentsupplierauditsReliabilityControlandImprovementCross-functionalteamestablishedtoinstallfocusedprogramCloseinteractionwiththesupplierfordesign,technologyandprocessEarlyfailuremonitoringandfeedbac

5、kindevelopmentphaseExtendedtestingincludingtemperaturecyclinginproductionDetailedfailuremonitoringinproductionforearlycorrectiveactionPredictedFITratesvs.fieldreturnFITratesFieldreturnFITrateinherentlyis(!)lowerthanpredictedFITratesparepartsdon’tcontributetoFMAnon-installedequipmentatcerta

6、incarrierslowchannelcountformanyyearstemperatureforFITestimationprobablyhigherthaninrealitymargin(e.g.,duetolowchannelcount,lowPMD,BOL)canmaskperformancedegradationFunctionalPartitionofOLIOpticalamplificationviaEDFAgainblockPumpdiodesMonitordiodesEDF-HeaterInternalGainSwitchOSCsplittingfun

7、ctionsasAdd/DropoftheOSCchannelusingwavelengthselectivecouplersSplittingofmonitorsignalsattheinputandoutputportandatintermediatemeasurementpointsSpectralshapingofthesignalusingaVOAforsettingtheEDFAtoanoptimizedoperatingpointGTCfortiltcompensationOpticalmonitor