蓝牙耳机生产测试方法及标准Word文件下载.docx
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蓝牙耳机生产测试方法及标准Word文件下载.docx
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Keywords:
BluetoothHeadset,PCBA,RFtest,Acoustic
Summary:
ThetestspecificationforFunction,RFtest,PCBAtestandacoustictest
ReferenceList:
ReferenceList
Name
No
Position
Press
1
TestProcedure
BeforestartATE,engineershouldcheckandenterappropriatevaluesinsettingenvironment.
ManualSettings
●Softwareversionnumber,eg“20131213”
●Upperandlowerlimitforeachtestitems
●StartedandstoppedBluetoothaddressrange
●RFtestprobeandcablelostforcalibrationandcompensation
StationRequirement
●Ineachstation,ATEneedtoread,compareanddisplaythesoftwareversionnumber,whichisstoredinPSKey0x02B6.Itisa16bits,4digitsBCD,eg“6AA5”
●Alltestitemsshoulddisplayonthescreen
●Eachproductiondayhavealogfileforeachstation.EachlogfileincludesallsamplesserialnoorBTaddresswithcorrespondingtestingdata.ThefileisinASCIIformat.Eachtestitemplacedinonecolumn.Filenamemustincludethestationno,dateandtimeforreference.
1.1Station1ModuleDownload
-Measurecurrentconsumptionat3.3V
-Downloadandverifythesoftware(includeapplicationandtestmode,ortestmodeonly)
1.2Station2Modulefunctionaltest(Freqtrim,PIO,AIO,voltageandcurrent)
Checkcurrentconsumption
-Feeda3.3Vsupplytothe3.3Vinput.Measurethe3.3Vinputcurrentandmeasurethevoltageat1.8Voutputfromthemodule.[Savethecurrentandvoltagetologfile]
Frequencytrim
-ControltheDUTtotransmitaCWatChannel39(2441MHz),adjusttheCrystalfrequencytrimvaluetomeetthetarget.WritethecorrectvalueintoPSkey0x01F6(e.g.0x0026),thenresetDUTandverify.[Savethevalueinlogfile]
CheckPIOandAlO
-InputthePIO(0-10)pins010101010101,readthelogicfromPIOandverify.
-Repeattheaboveandinvertthelo舒c(101010101010).readthelogicfromPlOandverify.[Savetheresulttologfile]
-InputtheAIO(O-I)pinsatl.5V(don'
t>
I.75V),readthelevelformAlOandverify.[Savethereadingstologfile]
CheckAudiopath
-SetDUTintoPCMLoopbackmode.Feed1kHz,5mVrmstomicinputandmeasure,thespeakeroutputlevel.[Savethespeakerleveltologfile]
1.3Station3ModuleRFTest(Conductedtest)
-EnabletheDUTtoenterBluetoothTestModebyusing"
RFCLI.EXE"
command
-SetthemeasuringconditionofE1852Baccordingthefollowingsetting.
RFTest(Conducted)
Transmittertest
Conditions:
-Carrier:
0
-Packettype:
DHI
-Packetlength:
27
-Pollperiod:
10
-RFlevel:
-50dBm
-DatafordeltaF2:
BS55(10101010)
-DatafordeltaFl:
BSOF(00001111)
-Meas.Averagingfactor:
100(maybelessforfastrespond)
-Couplingloss:
0dB
Measure:
-AveragePower
-Freq.Offset
-Freq.Drift
-Freq.Drift/Rate
-Avg,DeltaF2max
-Avg,DeltaF1max
-PacketErrorRate(PER)
-BitErrorRate(BER)
LoopbackTest
-Whitening:
Enable
-75dBm
-Modulationindex:
0.32
-No.ofbits:
10000
-BitErrorRatc(BER)
RepeattheabovetestforCarrier39,78
1.4Station4MainBoardPCBAFunctionaltest(PIOAIO,voltageandcurrent)
Supply3.7VtotheBAT+toGND
CheckPlOandAIO
InputdifferentlogictoPIO(0-11)whentherearetestpad,readallPIOandverify.
ForBTHSClip:
-PIO(8,10,)isDON'
TCARE
-OnlytestpadsforPlO(9).
-ThelogicofPIO(6)isinverted.itstestpadsis"
MFB"
-ReadandverifyAIO(0).AIO
(1)isDon'
tCare.
ForBTRadio:
-TBD
SettheDUTtoPCMloopbackmode.FeedlkHz,5mVrmstomicinputandmeasurethelevelfromthespeakeroutput.
MeasureOffCurrent
-ResetDUT,measuretheinputcurrentat3.7V
MeasureStandbyCurrent
-EnableDUTtoReceivemode(RXSTARTIat2442MHz).
-McaSUrctheinputcurrentat3.7V
MeasureOperationCurrent
-EnableDUTtotransmitmode(TXSTARTat2442MHz).
-Measuretheinputcurrentat3.7V.
MeasureChargingCurrent
-ConnectaElectronicLoadtoBAT+toGND.SettheE-Ioadtodrawconstantcurrentof75mA.Feed5VtoDC+toGND.Measurethecurrentat5V.
1.5Station5MainboardPCBARFtest(conductedtest)
RFTest(conducted)
1.6Station6MainboardPCBARFtest(Couplingtest)
-Testitemsmaybedecreasedinthefuture.
RFTestcoupling
FixtureandDUTmustbeinShieldBox.
-BitErrorRate(BER)
WritePSKeytoflashmemory
-AfteralltesteditemsarePASS:
-Writeaunique48bitsBluetoothaddressintoPSKeyOx0001.
-WriteOx000toPSKeyOxOIF9(SetHostInterfacetoNoHost)
-WriteOx000toPSKeyOx025D(EnableVM)
1.7Station7Acoustictestaftercasing
1.SettingtheBatteryvoltaget04.10V--4.24V,adjusttheChargervoltageTrimvaluetomeetthetarget.WritethecorrectvalueintoPSKey0x03b7,thenresetDUTandverify.[Savethevalueinlogfile]
Settingchargingvoltageto5V,
2.ThevoltageofVBATpinmustbewithin3.8--4.6Vwithoutbattery.
AcousticTest
-Testingmustbeinshieldroomandsilentroom.
-Aftercasingassembly,useCasiraforAudioGateway.PairingtheBTheadsetandcarryoutacoustictest.MeasureTXandRXloudnessand
1.8Station8ProductRFSensitivityTest
ProductRFsensitivity<
=-70dBm
Testingrequirement:
N4010,ShieldboxandcomputerwithSPI
Testingmethod:
1)PressMFBandthenplugcharger,thenreleaseMFB,thenpress
2)LEDwillflashpurple.
3)PuttheDUTonthetestjiginsidetheshieldbox.Closetheshieldbox.
4)SetupforN4010
ThesettingofthetestershouldbehoppingON
i.Mode->
LossComp->
ApplyLossCompensation”V”->
FixLosstodesired“DB”(R&
Dwillprovideonereferencesampleforcalibration.Ifnotprovided,pleaseuseB3040neforcalibration)Therefore.theFixLossshouldbesetbycalibration.Config->
EUT->
InquiryProcedure->
whileBTaddressisshownontheScreen->
SelectandReturnBDA
ii.Test->
Activeto"
3"
->
Select“SingleSlotSensitivity"
iii.Edit->
TestMode/Pkt/Pwr->
Type=HV3;
SetTransmitPowert070“
5)Toseetheresult:
Results->
Select"
SingleSlotSensitivity"
DetailedResults
IfBER<
=0.1
RecordtheTransmitPower.Thisisthesensitivity.
IfBER>
0.1
IncreasetheTransmitPowerin4)-ivuntilBER<
=0.1.
OtherTest
Chargers
Allchargersmustbefullchecked.Measureoutputvoltageandcurrentfordifferentinputvoltage.
Input100Vrms(AC)andconnectaload(250hm>
2Wresistor)attheoutput,outputshouldbe5Vand200mA.
Input240Vrms(AC)andconnectaload(250hm>
RechargeableBatteries
AlltheLithium-ionPolymer(LIP)rechargeablebatterymustbefullcheckedbeforeproduction.Allbatteriesarechargeupby0.5Cthendischargebya480hmresistor.Measurethedischargingtimeuntilvoltageisdroppedto3V.Thedischargingtimeatleast2hours
2Specification
2.1StationIModuleDownload
Downloadandverification:
ShouldbePASSED
2.2Station2Modulefunctionaltest(Freqtrim,PIO,AIO,voltageandcurrent)
Moduleturnoncurrent:
1mA-3mA(ForATESetup:
0.2mA-4.5mA)
Moduleoutputvoltage:
1.75V-1.85V
Trimmedfreq.:
2441MHz+/-3kHz
Trimmedvalue:
0-63
PIO(0-10):
Pass
AIO(0):
0.9V–1.1V
Audiooutputlevel:
0.1Vrms-0.5Vrms
(Micinput1kHz5mVrms)
2.3Station3ModuleRFTest(conductedtest)
RFandaudiotest(conducted)
Carrier0
Items
Descriptions
Lowerlimit
Upperlimit
Units
AveragePower
-6
4
DBm
PeakPower
Freq.Offset
-75
75
kHz
Freq.Drift
-25
25
Freq.DriftRate
-20
20
kHz/50us
Avg,DeltaF2max
115
175
Avg,DeltaFlmax
140
DeltaF2/DeltaF
0.75
1
-
PacketErrorRate(PER)
50
%
BitErrorRate(BER)
0.1
Carrier39
AveragePowe
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