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1、–12–CISPR22©IEC:2008Table2–LimitsforconducteddisturbanceatthemainsportsofclassBITELimitsFrequencyrangedB(μV)MHzQuasi-peakAverage0,15to0,5066to5656to460,50to556465to306050NOTE1Thelowerlimitshallapplyatthetransitionfrequencies.NOTE2Thelimitdecreaseslinearlywiththelogarithmofthefrequency
2、intherange0,15MHzto0,50MHz.5.2Limitsofconductedcommonmode(asymmetricmode)disturbanceattelecommunicationports7)Table3–Limitsofconductedcommonmode(asymmetricmode)disturbanceattelecommunicationportsinthefrequencyrange0,15MHzto30MHzforclassAequipmentVoltagelimitsCurrentlimitsFrequencyrang
3、edB(μV)dB(μA)MHzQuasi-peakAverageQuasi-peakAverage0,15to0,597to8784to7453to4340to300,5to3087744330NOTE1Thelimitsdecreaselinearlywiththelogarithmofthefrequencyintherange0,15MHzto0,5MHz.NOTE2Thecurrentandvoltagedisturbancelimitsarederivedforusewithanimpedancestabilizationnetwork(ISN)whi
4、chpresentsacommonmode(asymmetricmode)impedanceof150Ωtothetelecommunicationportundertest(conversionfactoris20log150/I=44dB).10Table4–Limitsofconductedcommonmode(asymmetricmode)disturbanceattelecommunicationportsinthefrequencyrange0,15MHzto30MHzforclassBequipmentVoltagelimitsCurrentlimi
5、tsFrequencyrangedB(μV)dB(μA)MHzQuasi-peakAverageQuasi-peakAverage0,15to0,584to7474to6440to3030to200,5to3074643020NOTE1Thelimitsdecreaselinearlywiththelogarithmofthefrequencyintherange0,15MHzto0,5MHz.NOTE2Thecurrentandvoltagedisturbancelimitsarederivedforusewithanimpedancestabilization
6、network(ISN)whichpresentsacommonmode(asymmetricmode)impedanceof150Ωtothetelecommunicationportundertest(conversionfactoris20log150/I=44dB).10___________7)See3.6.--`,,```,,,,````-`-`,,`,,`,`,,`---CopyrightInternationalElectrotechnicalCommissionProvidedbyIHSunderlicensewithIECNoreproduct
7、ionornetworkingpermittedwithoutlicensefromIHSNotforResale
