During the execution of a PEF treatment, it is important that the parameters of the applied electric field can be established reliably. Important pulse parameters are the amplitude, the pulse shape, the pulse duration, the pulse repetition frequency, and the energy of the pulse. These parameters must be determined with accurate voltage and current measurements. This section gives an overview of the concepts for pulsed high-voltage and pulsed current measurements. To be able to measure fast, high-amplitude voltage and current waveforms in an environment with large EM fields, much attention has to be paid to the measuring systems from EMC point of view.