Adequate EMC techniques can make digital measurements in high voltage engineering as straightforward as they are in low-voltage electronics. The authors demonstrate that for the case of a 2.4 MV lightning surge generator. Interference currents in grounding structures and coaxial cables have been measured. With an EMC cabinet and a differentiating/integrating measuring system, the effects of these interference currents can be suppressed far enough to obtain clean results of the high voltage waveform on a digital oscilloscop
