The pulse shape of EFT/burst generators designed as per IEC 61000-4-4 have to be verified both into a 50 ohm and a 1,000 ohm load at the 50ohm coaxial HV output as well into 50 ohm load at the output of the coupling network where the DUT is connected when testing mains supply lines. The PVF BKIT 1 includes the load resistors and a set of adapter to connect the coaxial matching resistors appropriately to the DUT output port.