EMC-介绍_20170321

PreparebyJamesHuangEmail:[e-mail]301489-1-52•EMI–RadiatedEmission(EN55032)–ConductedEmission(EN55032)–HarmonicCurrentEmissions(IEC61000-3-2)–VoltageFluctuationsandFlicker(IEC61000-3-3)•EMS(Immunity)–Electrostaticdischarge(IEC61000-4-2)–Radiatedimmunity(IEC61000-4-3)–EFTimmunity(IEC61000-4-4)–Surgetest(IEC61000-4-5)–Conductedimmunity(IEC61000-4-6)–VoltageDIP(IEC61000-4-11)–ISO7637(EquipmentforVehicularuse)EMI-产品测试组合EMS-产品测试组合EMS-产品测试组合–cont’ed产品质量定义-CT/CR(Performancecriteria)测试过程,测试完毕,产品需能够正常动作AftertestDuringtestBeforetestLimitlineEUToperatingRFfunction(Audio,RxQuality)time测试过程允许暂时控制和些许通讯质量降低，但用户感觉不出测试完毕,产品须能能正常动作,无丧失储存数据之功能测试结果产品品质结果不低于制造商所要求的条件AftertestLimitlineEUToperatingtimeRFfunction产品质量定义-TT/TR(Performancecriteria)WWAN功能质量定义•GSM–Audio(Uplink/Downlink)–RxQuality3•WCDMA–Audio(Uplink/Downlink)–BER0.1%•LTE–DataThroughput95%–Audio(Uplink/Downlink)功能(其他)质量定义•MobilePhone–Pressingthevolumebuttonsandmakesurethattheyarefunctioning.–Pressingthekeypadsandmakesurethattheyarefunctioning.–ChecktheLCDdisplayfornodistortedtext.–Thereshouldbenofrozendisplay.–Thephonemustberespondingtothekeypadpresses.–SDcard(Reading/Writing)–TheEUTmustbeabletointeractandcommunicatewiththesystemsimulator•RFfunction–Bluetooth(ConnectionwithBTearphone),WiFi(linkErrorRate),GPS(C/NRatio)•Checkthebatterylevelofthemobilephone–BatteryLow/Fullbatterylevel,chargeable•Variousoperatingmodes–MP3,FMRadio,HDMI,USBdatalink,Camera..etc.RI测试•测试场地:电波暗室,场均匀度校正必须符合0〜+6dB的要求•Testlevel:3V/m(EN301489-1法规)/otherequipment(6/m,10V/m)•Frequencyrange:80MHzto1000MHz;1400MHzto2.7000MHz;3GHz-6GHz•Modulation:80%amplitudemodulated(AM)with1kHzsinewave•Freq.stepsize1%offundamentalfrequencyFreq.Range:80MHz~3/6GHzTestLevel:upto10V/mRI测试配置及要求•桌上型的待测物应摆置在0.8m高的非导电桌上,待测物的正面应切齐预先校正的均匀面.•测试配置I.单机+充电器II.单机+耳机+充电器III.单机+耳机+充电器+USBCable+NotebookIV.Handsfree•将EUT旋转0,90,180及270度,重复测试。•天线极性为垂直(或水平)，重复测试RIAudioBreakthroughTest(ABT)测试配置Testlevel:3V/m,80MHzto1GHz,1.4GHz~2.7GHz,3GHz~6GHzwithAM80%modulationPerformanceCriteria:CT,CRAudiolevel35dBfordownlinkanduplinkRxQuality3(GSM)BER0.1%(WCDMA),Throughput95%(LTE)NoiseandechocancellationalgorithmsdisabledAbovetestsampleisSporton’sasset.ABT测试校正(UplinkandDownlinkCalibration)MRP(Uplink)ERP(Downlink)ABT测试-上行校正(UplinkCalibration)•Limitline:35dBEx:-5dBpa90dBuv@AudioAnalyzerAudioSignal-5dBpa@1KHzatMRPRFSignalAudioAnalyzerCMU200LimitlineRef:90dBuV(0dBuV)AudioLevel35dBAbovetestsampleisSporton’sasset.ABT测试下行校正(DownlinkCalibration)•Limitline:35dBLimitlineRef:120dBuV(0dBuV)AudioLevel35dBAudioAnalyzertubeArt.EarEx:0dBpa120dBuv0dBPa@1KHzAtERP测试结果-75-70-60-50-40-3080M100M2003004005008001GUplinkindBpaFrequencyinHzUplink-90-80-60-40-3080M100M2003004005008001GDownlinkindBpaFrequencyinHzDownlink024680M100M2003004005008001GRxQalityFrequencyinHzRxQalityFAILConductedImmunity(CI)•测试场地:电波隔离室并可阻绝外界声音干扰•CI测试配置方法:CDN,BCI,Clamp,Directinjection•Testlevel:3Vrms(法规)/otherequipment(6Vrms,10Vrms)•Frequencyrange:0.15MHzto80MHz•Modulation:80%amplitudemodulated(AM)with1kHzsinewave•Freq.stepsize1%offundamentalfrequency•ABTuplink&downlinkcalibration同RI校準程序CI测试配置及要求•待测物应摆置在0.8m桌高,桌面良好接地•待测物应距离墙壁50cm以上•EUT距離CDNs(EMClamp)应介于10~30cm之间，其连接线尽可能短•测试配置I.单机+充电器II.单机+耳机+充电器III.单机+耳机+充电器+USBCable+NotebookIV.Handsfree(Ifinhandsfreeapplicationsanexternalloudspeakerisused)CI测试配置及要求PerformanceCriteria:CT,CR3Vrms,0.15MHz-80MHzwith1kHz80%AMAudiolevel35dBfordownlinkanduplinkRxQuality3(GSM),BER0.1%(WCDMA),Throughput95%(LTE)Signalcableexcesslength3mlongEUT’snoiseandechocancellationalgorithmsdisabledAbovetestsampleisSporton’sasset.RI/CI常见问题•RI/CI容易受干扰failure•声音输出杂音或过低,影响结果•手机端预留组件位置为修改使用ESD测试•BasicStandard:IEC/EN61000-4-2•Configuration:EUTstandalone/withaccessories•ClimaticConditions–Ambienttemperature:15ºC~35ºC–Relativehumidity:30%~60%–Atmosphericpressure:86kPa~106kPa•DischargeType–Directdischarge•AirDis.:+/-2/4/8kvandotherspecificlevel•ContactDis.:+/-2/4kvandotherspecificlevel–Indirectdischarge:HCP/VCP•NumberofDis.:Atleast10discharges•DischargePeriod:1secondAbovetestsampleisSporton’sasset.MobilephonewithearphoneClearESDchargebycarbonbrushbeforenextzap.ESD测试配置ESD测试AirDis.:+/-2/4/8kvandotherspecificlevelContactDis.:+/-2/4kvandotherspecificlevelHCPVCPAbovetestsampleisSporton’sasset.连接器外壳ESD测试l连接器外壳具金属接地且无塑料外盖-人体可摸到金属外壳时测试Contactdischarge-中心pin针不做contact或airdischargel连接器外壳金属接地且且无塑料外盖-人体可摸到金属外壳时测试Contactdischarge-中心pin针不做contact或airdischarge-架测Airdischarge,当盖上塑料外盖AbovetestsampleisSporton’sasset.连接器外壳ESD测试EMI测试测试场地:电波暗室,符合NSA,SiteSWR测试配置:测试EUT本身数字电路所产生的或与外围产品(耳机、充电器、USBCable,HDMI)等连接时所产生的辐射干扰,并设置产品正常使用模式测试EMI常见问题•USB–Harmonicsof12MHz•HDMI–1080p•74.25MHzorharmonics–4K(2160p)•297MHzorharmonics•其他数字电路噪声27EN55032TestItemsRadiatedEmissionupto6GHz•測試頻段範圍看EUT內部支援的最高頻率•最高需要測試頻率到6GHzRadiatedEmissionEMIReceiverFilterToUtilityPowerEUTGroundPlane3mor10m0.8mCoaxialCableTurnTable1m–4mPowerCableEN55032EN55022Frequencyrange(1GHz)ClassBLimit(Quasi-peak)@3MeterdistanceClassBLimit(Quasi-peak)@10Meterdistance30MHz-230MHz40dBuV/m30dBuV/m230MHz-1000MHz47dBuV/m37dBuV/mFrequencyrange