Com-Power LI-215 Line Impedance Stabilization Network, 30 MHz

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Com-Power Line Impedance Stabilization Networks (LISN) are intended for electromagnetic interference (EMI) testing and certification of electronic products at an EMC test laboratory. The LISN, including the LI-215, were designed and built to match the impedance characteristics given by the individual test specification. During the conducted emissions tests, the LISN isolates the equipment under test from interference from external power source. It also stabilizes the line impedance and provides a 50Ω RF output for connecting it to the spectrum analyzer.

The LI-215 has two networks housed in a single enclosure for single phase or two wire applications. It has a standard 15 Amp NEMA socket to power the EUT. All LISN LI-215's use air-core coils to prevent saturation and permeability variation. Therefore, they provide stable performance over time. The bottom mounting plate of the LISNS has an unpainted, conductive surface. This allows them to be electrically bonded to the ground plane during the test. Each LI-215 is individually calibrated to verify correct impedance.