NEBS GR1089测试咨询

tim

各位好：
请问国内哪里能做GR-1089-CORE10.7.1部分/10.7.2这两项
10.7.1VoiceFrequencyNoiseEmissionO10-8[225]Theconductedvoicefrequencynoisemeasuredatthedcpowerportofthenetworkequipmentshouldnotexceedthefollowinglimit:whereIcisthemaximummeasuredinputcurrentoftelecommunicationsloadequipment(orgroupingoftelecommunicationsloadequipment)or1A,whicheverisgreater.NoiseemissionmeasurementsforvoicefrequencyshouldbeperformedwithanoisemeasuringsetwithC-messageweightingasspecifiedinIEEEStd.743-1995.[56]10.7.2WidebandFrequencyNoiseEmissionO10-9[226]Thewidebandfrequencynoiseatthedcpowerportofnetworkequipmentshouldnotexceedthefollowinglimit:whereIcistheratedinputcurrentor1A,whicheverisgreater.dBrnC910IClog+mVrms(inany3-kHzbandfrom10kHzto20MHz)Ic