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NNB 51

Line Impedance Stabilization Network Dual-Line-V-LISN

NNB 51zoom
  • Dual-line-V-LISN
  • Compliant to CISPR 16-1-2, MIL-STD-461, FCC Part 15, ANSI C63.4
  • Current up to 16 Amps
  • Frequency range 9 kHz to 30 MHz
  • Hand and remote operated
  • Massive grounding bars

Line impedance stabilization network (LISN) such as the NNB 51 are used to measure distortion signals on the mains cord of an electrical equipment under test (EUT). The distortion signals are usually generated or picked up inside of the EUT and the mains cord acts as an antenna. European and international EMC regulations define maximum permissible signal levels and frequency bands for such distortion signals.

The distortion signal to be measured is available on a coaxial N‑connector that is mounted on the front panel of the NNB 51. For the actual measurement of the distortion signals a measuring receiver can be used. The V-network is part of a complex EMC-test setup that also has been standardized in CISPR 16‑2‑1 (EN 55016-2-1).

Parameter Value
Standards applied

CISPR 16-1-2, MIL-STD-461, FCC Part 15, ANSI C63.4

Frequency range

9 kHz to 30 MHz

Attenuator (build-in)

10 dB

NNB operating voltage

100 to 120 V / 220 to 240 V, 50 to 63 Hz

EUT operating voltage

max. 250 V

  • Related Products


  • CFL 9206

    CFL 9206

    The CFL 9206 assists in preventing damage to input circuits of measuring equipment from high level transients often encountered during conducted emission testing.





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