ISN / CDN-C50E

Impedance Stabilization Network (ISN) for 50 Ω coaxial cables — measures common-mode conducted emissions on 50 Ω coax telecom/data ports per EN 55022/32 (CISPR 22/32) and CISPR 16-1-2. Frequency Range: 150 kHz to 30 MHz (for emissions - as ISN),150 kHz to 230 MHz (for immunity - as CDN)

150 Ω common-mode termination per CISPR 22/32 — presents the standard-defined common-mode impedance to the EUT so disturbance voltage at the measurement port is stable and repeatable.

50 Ω BNC EUT and AE ports — direct mate to standard 50 Ω coax data/RF cabling without adapters.

Test antennas, RF sensors, and instrumentation with 50 Ω coax — common-mode emissions measurement on antenna feeds, RF probes, and lab instruments.

GPS / GNSS / Wi-Fi / Bluetooth active-antenna feeds — verify conducted emissions on the 50 Ω coax lead to the active element before radiated tests.

50 Ω BNC measurement port on top of housing — direct mate to spectrum analyzer / EMI receiver for the disturbance voltage scan.

Also usable as a CDN for IEC/EN 61000-4-6 conducted immunity — secondary capability over the same 150 kHz–230 MHz band when needed.

Individually calibrated; unpainted bottom surface bonds directly to the reference ground plane — three-year warranty; pairs with the SPA-900TG series spectrum analyzer / EMI receiver.