ETS-Lindgren Line Impedance Stabilization Networks (LISNs) are multi-line low pass filter networks used for conducted emissions measurement. LISNs isolate an electrically powered EUT from the external power source, stabilize line impedance (for repeatable measurements), and provide a 50 ohms RF connection to measure EMI voltage generated by the EUT. When line currents drawn by the EUT are too great for a LISN 3701 Line Probe can be used for EMI voltage measurements.
The EMCO Model 3925/2 is a two line single phase PLISN for TEMPEST testing. It is divided into a low frequency section of 5 kHz - 20 MHz and a high frequency section of 2 MHz - 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.
Features
- One Piece, Multi-Line Design for Convenience
- Wide Frequency for Broad Measurement
- Coils Matched to Application
- Insulated Plugs for Safer Power Connections
- RF Shielding to Minimize Intrusion
- Individually Calibrated
Specifications
| Frequency Minimum | 5 kHz |
| Frequency Maximum | 1000 MHz |
| Lines Plus Ground | 2 |
| Maximum Current | 20 A |
| Maximum Voltage | 220 VAC Line to Ground |
| 400 VAC Line - Line |
| Network Inductance Impedance | 50 ohms |
| Power In Connector | Superior Plug |
| Power Out Connector | AC Adapter Type, N female |
| Power Source Frequency | DC - 60 Hz |