Line Impedance Stabilization Network (LISN)

LI-350

10 kHz - 400 MHz

LI-350

50 Amp LISN for DO-160 & MIL-STD 461F

The LI-350 Line Impedance Stabilization Network (LISN) can handle upto 50 Amps AC (35Amps DC) current and provides the necessary measurement platform for performing power line conducted emissions compliance testing as required by DO-160 & MIL-STD 461F.

The concept and advantages of the LISN is to:

a) connect in series with, and impose a defined impedance on, the lines under test; thereby providing a distinct advantage over current or voltage probe measurements, where the impedance of the lines is largely uncontrolled;

b) provide a coaxial RF measurement port for connection to the measurement equipment, to which the disturbance voltages present at the EUT port are coupled for measurement; and,

c) isolate the AE (ancilliary equipment) port from the EUT and RF ports, which:

1) minimizes the influence of the AE-connected equipment/cabling on the impedance (and voltage division factor) of the network; and,

2) reduces the amplitude of any ambient signals, as well as spurious disturbance voltages generated by the AE-connected equipment, thereby minimizing their potential impact on the measurement results.

Two pairs of LI-350 can be used to accommodate 3-phase power systems (Wye or Delta configurations).

  • Frequency range of 10 kHz to 400 MHz
  • Fully compliant with DO-160/ MIL-STD 461
  • “Air-core” inductors to prevent saturation
  • Individual Calibration Included
  • Three-Year Warranty
  • Product Name: Line Impedance Stabilization Network (LISN)
  • Specification: RTCA DO-160 / MIL-STD 461F
  • Application: Power Line conducted emission tests
  • Frequency Range: 10 kHz to 400 MHz
  • RF Connector: 50 Ohms N-type (female)
  • Current Rating: 50 Ampere AC, 35 Ampere DC
  • Voltage Rating: 480 VAC (Line to Ground), 676 VDC
  • Inductors: 5 microhenry (air-core)
  • Mains & EUT Connections: Superior Electric SUPERCON shrouded sockets
  • Dimensions (each network): 15.4 x 7 x 6.6 inches / 39.1 x 17.7 x 16.7 cm
  • Weight (each network): 6 lbs. / 2.7 kg
  • Insertion Loss: < 0.2 dB (150 kHz to 30 MHz)
  • ImpedanceImpedance2