NEBS认证测试用例.docx

NEBS认证测试用例.docx

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NEBS认证测试用例

NEBS认证测试用例

1.EnvironmentalTest（GR-63-CORE）

1.1.Temperature,Humidity,andAltitudeCriteria

Thissectionprovidescriteriaandtestmethodsfortemperature,humidity,andaltituderobustnessofnetworkequipment.

ØThecriteriacoverthefollowing:

•Transportationandstorageenvironments

•Operatingtemperatureandhumidityenvironments

•Altitude

•Heatdissipation

•Equipmentairflow

ØEquipmentmaybetestedinthefollowingconfigurations:

•Frame-level—Afully-loadedequipmentframeorframes,orasingleequipmentshelfmorethan36inchesinheight.

•Shelf-level—Asingleequipmentshelflessthanorequalto36inchesinheight.

1.GeneralTestingRequirements

Duringtheoperationalteststheequipmentshalloperate,usingasmanyfunctionsasdeemedpractical.Forthenon-operatingtests,theequipmentshallbetestedforoperabilitybeforeandaftereachtest.

Theoperationalstateoftheequipmentshallsimulatetheconfigurationforactualserviceconditions.Thecriteriaforassessingfunctionalityshallbeincludedinawrittentestplan.Thecriteriadependontheserviceprovidedbytheequipmentbeingtested,andaredeterminedbyapplyingappropriateTelcordiagenericcriteria,or,ifnoneexists,bythesupplier'sorpurchaser’sperformancespecifications.

Alltestsshallbeconductedinathermalchambercapableofproducingthetemperatureandhumidityconditionsgiveninthetestprocedure.Foroperationaltestsonproductscooledbyforcedair,thethermalchambervolumeshouldbeatleast5timesthevolumeoftheequipmentundertest.Foroperationaltestsonproductscooledbynaturalconvection,thethermalchambervolumeshallbeatleast5timesthevolumeoftheequipmentundertest,andtheairflowneartheequipmentspaceshallnotexceed1m/second.Chamberairflowvelocitycanbeassessedpriortoinsertionofequipmentundertest.

Temperatureandhumiditysensorsshallbecalibratedfortherangesoftemperatureandhumidityexpectedduringthetest,andshallbecapableofmeasuringwithsufficientaccuracytoensurethetolerancesintheprocedurearesatisfied.

Allpowering,interfacing,andmonitoringequipmentthatisnotpartoftheequipmentbeingtestedshouldbelocatedoutsidethechamber.

2.Tolerances

Unlessotherwisespecified,thetemperatureshallbemaintainedwithin±3°C,andtherelativehumiditywithin±3%.Dwelltimedurationsspecifiedintestmethodsareminimumsandmaybeextended.

3.AmbientTemperature/RelativeHumidity

Unlessotherwisespecified,ambienttemperatureisdefinedasatemperaturebetween20°C（68°F）and30°C（86°F）andambientrelativehumidityisdefinedtobearelativehumiditybetween5%-85%.

4.TemperatureGradient

Inthethermaltestsbelow,themaximumcoolinggradientisspecifiedat30°C/hr（54°F/hr）.Themaximumheatinggradientisspecifiedat96°C/hr（173°F/hr）.Thermalchambersshallbecapableofachievingthisgradientoverthespecifiedtemperaturerange.

5.TestReport

Awrittentestreportshallverifythatthetestwasconductedproperlyandthattheequipmentfunctionalitywasmaintained.Thetestreportshallincludeadescriptionofthetestchamberintermsoftheappropriaterequirementsandobjectives,andshallincorporatethefollowinginformation:

•Sketchesorphotosofthetestconfiguration

•Adescriptionoftheequipmentundertestandtheserviceitprovides

•Thecriteriaforassessingfunctionality,includingtherequiredfunctionalityatboththenormalandshort-termoperatingconditionsforoperatingtemperatureandhumiditytests.

NOTE:

Foroperatingtemperatureandrelativehumiditytesting,coreorcriticalfunctionsmustbemaintainedattheshort-termoperatingconditions.Anydesignedreductioninequipmentfunctionalityattheshort-termoperatingconditionsmustbejustifiedinthetestreport.Fullequipmentfunctionalitymustself-restorewhenthetemperatureorhumidityreturntothenormalrange.

•Alltemperatures（includinginternalequipmenttemperatures）,humidityconditions,andfunctionalitydata（includinganycalculations）

•Adescriptionofanyhardwareorsoftwarefailures,plusalistofallreplacementsthatweremade,ifany.

1.1.1.TransportationandStorageEnvironmentalCriteria

Duringtransportationorinstorage,equipmentmaybeexposedtoextremesinambienttemperatureandhumidity.Thecriteriainthissectionapplytoequipmentinitsnormalshippingcontainer.Aftertheequipmentisexposedtothegivenenvironment,itisreturnedtoambient,unpackagedandoperated.Conformanceisbasedontheequipment’sabilitytooperateasintendedwhenreturnedtoambientconditions.

Theequipmentdoesnotoperateduringthesetests,butappropriatefunctionalitymeasurementsshouldbemadeonequipmentbeforeandaftereachtestorsequenceoftests.Packagedequipmentshouldbeusedinthesetests.If,forsomereason,thisisnotpossible（e.g.,thepackagingisnotavailable）,thesetestsmaybeconductedonunpackagedequipment,providedthatthe

•Packagingcanbereasonablyassumednottoinfluencethetestingresults,and

•Packagingwillitselfresistthetemperatureandhumiditypackagestresses.

Packagingthatincludesamoisturebarriershouldalwaysbeincludedinthehighhumidityandlowtemperatureexposureandshocktestsbecausesuchbarriersaffectproductconformanceforthesetests.

NOTE1—Testsmaybeperformedsequentiallyonasinglesampleorparallel.

NOTE2—Ifthelikelihoodofnonconformancefromagiventestissmall,asequenceofseveraltestsmaybeperformedbeforetheequipmentoperationaltestisperformed.However,ifanonconformanceoccurs,thetestswillhavetoberepeatedtodeterminewhichenvironmentcausedthenonconformance.

NOTE3—Iftestingsequentiallyonasinglesample,thesuggestedtestsequenceislowtemperatureexposureandthermalshock,followedbyhighhumidityexposure,andfinallyhigh-temperatureexposureandthermalshock.Adequatetimeforproductrecoveryaftertheshocksshouldbeallowed.Thiswillpermittheequipment’stemperaturetomoderate,andanyresultingcondensationtoevaporate,beforeperformingtheequipment’sfunctionalitytestorcontinuingthepackagetestsequence.

NOTE4—Fortransportationandstoragemethods,testsampleinsertionintoachamberkeptatthespecifiedextremeenvironmentsispermittedifamanufactureragreestothismethod.Theexposuredurationshallbeextendedtoincludetheomittedrampingtimeprovidedinthisdocument.

1.1.1.1.Low-TemperatureExposureandThermalShock

ThepackagedequipmentshallnotsustainanydamageordeteriorateinfunctionalperformanceafterithasbeenexposedtotheenvironmentdescribedinTable1-1.

Table1-1Low-TemperatureExposureandThermalShock

TestSequence:

1）Makeinitialequipmentfunctionalitytestatambienttemperatureandhumiditylevel.

2）Packagetheequipmentandplaceitintothetestchamber.

（Donotoperatetheequipmentduringthetest.）

3）Monitorthechambertemperaturecontinuouslyduringthetest.

4）Decreasethechambertemperature,atarateofabout30°C/hr（54°F/hr）to-40°C（-40°F）.

5）Maintainatemperature-40°C（-40°F）foraminimumof72hours.

6）Administerthethermalshockbyincreasingthechambertemperature（orremovingtheequipmentfromthechamber）from-40°C（-40°F）toambientinlessthan5minutes.（Useappropriatepersonalprotectiveequipmentwhenhandlingthepackage.）

7）Performapost-testequipmentfunctionalitycheckaftertheequipmenthasrecoveredatambienttemperatureandhumidity.

Figure1-1Low-TemperatureExposureandThermalShock

1.1.1.2.HighRelativeHumidityExposure

ThepackagedequipmentshallnotsustainanydamageordeteriorateinfunctionalperformanceafterithasbeenexposedtotheenvironmentdescribedinTable1-2.

Table1-2HighRelativeHumidityExposure

TestSequence:

1）Makeinitialequipmentfunctionalitytestatambienttemperatureandhumiditylevel.

2）Packagetheequipmentandplaceitintothetestchamberat23°C（73°F）and50%RH.

（Donotoperatetheequipmentduringthetest.）

3）MonitorthechambertemperatureandRHcontinuouslyduringthetest.

4）Increasethechambertemperature,atarateof30°C/hr（54°F/hr）to40°C（104°F）.

5）Whileholdingthechamberat40°C（104°F）,transitionthechamber’sRHto93%.ThisRHshallbeachievedin<2hours.

6）Maintainatemperature40°C（104°F）andaRHof93%foratleast96hours.

7）Whileholdingthechamberat40°C（104°F）,transitionthechamber’sRHto50%.ThisRHshallbeachievedin<2hours.

8）Transitionthechamberto23°C（73°F）atarateof30°C/hr（54°F/hr）whilemaintaining50%RH.

9）Performapost-testequipmentfunctionalitycheckaftertheequipmenthasrecoveredatambienttemperatureandhumidity.

Figure1-2HighRelativeHumidityExposure

1.1.1.3.High-TemperatureExposureandThermalShock

ThepackagedequipmentshallnotsustainanydamageordeteriorateinfunctionalperformanceafterithasbeenexposedtotheenvironmentdescribedinTable1-3.

Table1-3High-TemperatureExposureandThermalShock

TestSequence:

1）Makeinitialequipmentfunctionalitytestatambienttemperatureandhumiditylevel.

2）Packagetheequipmentandplaceitintothetestchamber.

（Donotoperatetheequipmentduringthetest.）

3）Monitorthechambertemperaturecontinuouslyduringthetest.

4）Increasethechambertemperature,atarateof30°C/hr（54°F/hr）to70°C（158°F）.

5）Maintainatemperature70°C（158°F）foraminimumof72hours.

6）Administerthethermalshockbydecreasingthechambertemperature（orremovingtheequipmentfromthechamber）from70°C（158°F）toambientinlessthan5minutes.（Useappropriatepersonalprotectiveequi