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1. Introduction

EM5040E/5040A/5040B Line Impedance Stabilization Network is a kind of （50uH+5Ω）||50Ω V type  LISN. This product can provide stable impedance from 9 kHz to 30 MHz RF range for DUT and reference. At the same time, it isolated the useless signal from the electric network to measurement circuit and coupling the interference voltage of the DUT to the input connector of the measurement receiver. The product’s performance is compliant with standard requirements of CISPR16-1-2:2006 for V-networks. It suits conducted disturbance voltage measurement for single phase equipment well. The standard BNC output connector and 50Ω output impedance make the device compatible to the measurement equipment such as receiver and spectrum analyzer of any manufacturer. The artificial hand of the product can simulate the handle device to measure.

EM5040E is a type of single phase standard LISN. EM5040A has a limiter (with attenuation of 10dB) and an optional 150 kHz high pass filter. Users can choose to start from 9 kHz or 150 kHz according to corresponding standard. The built in transient limiter can effectively protect receiver or spectrum analyzer from damage caused by large signal. Users can connect EM5040A safely to those devices without other limiter.