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3925-2 LISN

3925-2  LISN

ETS-Lindgren Line Impedance Stabilization Networks (LISNs) are multi-line low pass filter networks used for conducted emissions measurement.

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3925-2 Manual Product Manual

Key Features

  • Insulated Plugs for Safer Power Connections
  • Coils Matched for Application
  • Individually Calibrated
  • One Piece, Multi-Line Design for Convenience


LISNs isolate an electrically powered EUT from the external power source, stabilize line impedance (for repeatable measurements), and provide a 50-ohm RF connection to measure EMI voltage generated by the EUT. When line currents drawn by the EUT are too great for a LISN, Model 3701 Line Probe can be used for EMI voltage measurements.

The Model 3925/2 is a two line single phase PLISN for TEMPEST testing. It is divided into a low frequency section of 5kHz to 20MHz and a high frequency section of 2MHz to 1 GHz. The low frequency section is rated at 15 amps with a line voltage drop of 10%. The high frequency section is rated at 20 amps with a maximum drop of 2.5%. Iron core coils are used in this PLISN to provide the proper impedance at lower frequencies. Type N female connectors are used for power output to the EUT. An AC adapter is also provided. Type BNC connectors are used for monitoring the output.

Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44(0)1438.730700 Tel + Tel +8610.8275.5086 Tel+ 81.3.3813.7100
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44(0)1438.730751 Fax + Fax +8610.8275.5537 Fax +81.3.3813.8068

Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specification.