EMC Filters Attenuation Measuring Method

The aim of this work is to present the attenuation measurement procedure mea- surement and laboratory stand for fllters used to interference suppression in power and telecom- munication lines. The procedure is based on the CISPR 17:2000 standard. The article describes the attenuation measurement system for fllter with impedance difierent then 50›. The article presents the measured attenuation characteristics of set of EMC fllters which are ofiered on the market. The calibration of measurement method is presented too.