The measurement adapter type MD 101 as per informative annex B of IEC/EN 61000-4-2 serves to verify pulse amplitudes and pulse shapes. It is designed for mounting in the side wall of a Faraday cage in which an oscilloscope has been installed. This measurement adapter, also known as a 'Pellegrini-Target' has the flat impedance curve to well over 1 GHz that is necessary for the purpose.
Use of this adapter is only worthwhile in conjunction with a test rig that is laid out in strict conformity with the relevant standard (see section 7).
The Teseq MD 103, Pommerenke target, is a more advanced coaxial measuring target with flat response characteristics up to the multi-GHz range. It may be used instead of the Teseq MD 101.