Isolate the power and data lines to your DUT (device under test) to eliminate outside and unknown electrical noises, providing a stable impedance during your testing. Line impedance stabilization networks (LISN's) are used for electromagnetic compliance testing as well as engineering labs for better performance and more accurate measurements.
Fischer Custom Communications FCC-LISN-5-50-1-01-MS461F, 5uH, 50 Amp, 1 Line LISN for MIL-STD-461F
SKU: sku-732
Fischer FCC-LISN-50-25-2-01, 2 Line LISN
SKU: 2886
Fischer Custom Communications FCC LISN-50/250/25-2 Line Impedance Stabilization Network
SKU: 2219
Solar LISN 9117-5-TS-50N for CISPR 25, FCC Part 18 and More
SKU: 12026
Com-Power LI-3P-200 Series 3-Phase LISN's with 50/250 uH Inductor, FCC/EN/CISPR, up to 100 A, 150 kHz - 30 MHz
SKU: sku-603
Teseq ISN T2A Impedance Stabilization Network (ISN) for Unscreened Balanced Pairs
SKU: sku-158
Com-Power LI-3P-132 150kHz to 30MHz Three-Phase Line Impedance Stabilization Network
SKU: sku-598