Line Impedance Stabilization Network, LISN Multiline, 50 uH and 250 uH, 9 kHz to 30 MHz, 20 Amps, FCC/EN/CISPR
The LI-220A 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 LI-220A 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.
Transient Protection
Com-Power Transient Limiters are a recommended accessory in order to protect the RF input of your measuring instrument from potentially damaging, instantaneous voltage transients. The transient limiter also reduces the possibility of overload by incorporating two 5 dB attenuation/impedance matching pads, in addition to its low-pass and high-pass filter sections which further attenuate any out-of-band emissions.
Calibration
All Com-Power LISNs are individually calibrated in compliance with the relevant requirements of CISPR 16-1-2 and ANSI C63.4. Impedance, Phase, Isolation, and Insertion Loss data is supplied with each unit, along with the certificate of calibration. Recognized ISO 17025 accredited calibration is also available upon request.