Test technique under radiated-wave electromagnetic pulse simulator

The choice principle and obtaining method were presented for the trigger signal and surrounding electric-field inspecting signal, based on the characteristics of the radiated-wave electromagnetic pulse(EMP) simulator test and the need of the equipment under test. The test state of equipment was analyzed combining EMP coupling effects and skin effects. The experimental results show that the chosed trigger signal is stable with a large magnitude,and the arrival time of the signal can be calculated accurately. It is suitable to trigger oscilloscopes. The results also indicate that the chosed inspecting signal has a good waveform with a magnitude. It could be the reference for the surveillance and normalization of the variation of surrounding electric-field and other signals．