ment port. РVariation of LISN impedance versus frequency with the mentioned topology is presented in Fig.7. LISN has stabilized impedance in the range of conducted EMI measurement. РVariation of level of signal at the output of LISN versus frequency is the spectrum of interference. The patibility of a system can be evaluated parison of its interference spectrum with the standard limitations. The level of signal at the output of LISN in frequency range 10 kHz up to 30 MHz or 150 kHz up to 30 MHz is criterion patibility and should be under the standard limitations. In practical situations, the LISN output is connected to a spectrum analyzer and interference measurement is carried out. But for modeling and simulation purposes, the LISN output spectrum is calculated using appropriate software.
全文预览
