Line Impedance Stabilization Networks (LISNs) are designed to meet the requirements of RTCA DO-160 and DEF STAN 59-411. They provide a stable impedance and isolate the device under test (DUT) from external noise sources, enabling accurate measurement of conducted emissions in compliance with aerospace and military standards.
The LISN was especially tailored for onboard mains with 890 Hz and a maximum voltage of 270 V. Under these extreme conditions the resistors of the LISN must be able to dissipate high power. The impedance characteristic is realized according to DO-160: 5 µH + 5 Ω || 50 Ω. The continuous current rating is 70 A, for a short time 100 A can be drawn.
The main application of the unsymmetrical single path AMN (artificial mains network) NNBM DO160-1500 is the measurement of interference voltage in vehicles, aircrafts and ships in the HF VHF range 0.009 – 400 MHz. The impedance characteristic is realized according to DO 160 and DEF-STAN-59: 5 µH || 50 Ω. The continuous current rating is 200 A, for short time more than 280 A are possible