The normative Annex A of IEC/EN 61000-4-6 specifies the EM clamp and provides additional information  regarding the clamp characterization. The KEMZ 801A complies to the standard.  The adapter kit CAL 801A, which allows test level setting and correction factor measurement, is offered  optionally. The calibration fixture CAL KEMZ is made for the S-parameter measurements as defined in  Annex A of IEC/EN 61000-4-6 edition 4.