The LIN-120A Line Impedance Stabilization Network (LISN) is in full compliance with both CISPR 16-1-2 and ANSI C63.4. It provides the necessary measurement platform for performing power line conducted emissions compliance testing as required by most worldwide standards for commercial products. The LIN-120A performs each of the following functions during the measurement:

• Provides a defined, stable impedance across the measurement frequency range;
• Isolates the EUT and measurement circuit from the power source, thereby minimizing its influence on the measurements; and,
• Couples the disturbance voltages to the coaxial measurement port (either directly, or through a transient limiter w/10 dB attenuation, depending on switch position), for connection to the measuring instrument.

This LISN uses air-core inductors to prevent saturation and permeability variation. Its mounting plate is left unpainted in order to facilitate connection to earth ground in its installation, which is essential due to high leakage current.

The LIN-120A is a dual-conductor network capable of handling currents up to 20 Amps(AC) per line. The EUT power port is fitted with a universal, multi-configuration receptacle, which accommodates almost any EUT plug without the need for adapters. The power input port is fitted with a standard IEC C20 receptacle.