Com-Power LI-550A Single-Line LISN 100 kHz - 108 MHz

Line impedance stabilization networks (LISNs) are utilized during conducted emissions as well as susceptibility testing. They are specified in the EMI test requirements of various regulatory agencies, such as FCC, CISPR, FAA and DoD.  Com-Power manufactures a line of LISNs which meet most specifications required by these agencies.
 
One LISN is required for each line. Therefore, each line is separated by an aluminum enclosure which minimizes RF interference, facilitates line isolation and provides use flexibility to choose any number of lines depending on number of phases. The standard models are supplied as a pair for 2 wire applications. 

All LISNs manufactured by Com-Power 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, conducive surface. This allows the LISNs to be electrically bonded to the ground plane during the test.