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LISN stands for ‘Line Impedance Stabilization Network’. Com-Power offers a line of LISNs developed for conducted emission testing according to the most commonly adopted EMC specifications like CISPR, FCC, ISO, EN, RTCA DO-160 and MIL-STD 461D. The LISN circuit is designed and constructed to meet the performance criteria given by these standards.

A LISN, or as it is also known, Artificial Mains Network (AMN), as a function of its design, performs the following functions:

Provides a defined, stable, impedance to the Equipment Under Test (EUT)

Isolates the EUT from the power distribution network (or power source); thereby minimizing potential affects of external influences on the measurements, and facilitating accurate and repeatable results.

Provides a near 1:1 (<0.5 dB insertion loss) 50O coaxial measurement port (type-N) for connection to a spectrum analyzer or EMI receiver. Use of a Transient Limiter for impedance matching, reduction of out-of-band emissions and transient protection for your measurement instrument is highly recommended and available from Com-Power. Dynamic Sciences carries a variety of Three-Phase LISNs for CISPR 16-1-2/ANSI C63.4 of current ratings from 16 to 100 Amps. The line under test can be selected using a manual/mechanical switch or a fiber optic controlled remote interface. All Dynamic Sciences LISNs are individually calibrated in compliance with the relevant standards. Impedance, Phase, Isolation, and Insertion Loss data is supplied with each unit, along with the calibration certificate. LISN 100 Amps for DO-160, MIL-STD 461 & CISPR 25/16 LISN 100 Amps For MIL-STD 461 LISN 15 Amps for CISPR 16 & ANSI C63.4 LISN 20 Amps for CISPR 16 & ANSI C63.4 LISN 25 Amps For CISPR 16 & ANSI C63.4 LISN 25 Amps for DO-160 & MIL-STD 461 LISN 25 Amps for MIL-STD 461 LISN 50 Amps for CISPR 16 & ANSI C63.4 LISN 50 Amps for CISPR 25 & CISPR 16 LISN 50 Amps for DO-160 & MIL-STD 461