In precompliance and standards testing such as MIL-STD-461
and EN 55011
where a spectrum analyzer is used for measurements instead of an EMI receiver, it is always a good idea to use a transient limiter. The Agilent 11947A Transient limiter protects the spectrum analyzer input from damage caused by high-level transients from line impedance stabilization networks (LISNs) during EMI testing for conducted emissions.
Protects the spectrum analyzer input from damage caused by high-level transients
Frequency Range: 9 kHz to 200 MHz
Insertion Loss: 10 dB
Maximum Input Level: Continuous: 2.5 W (+34 dBm), Pulse: 10 kW for 10 µS, DC:±12 V