System and method for testing cable transfer impedance time domain
The invention provides a system for testing a cable transfer impedance time domain. The system comprises a high voltage pulse signal generator for generating an excitation signal; an oscilloscope for receiving an injection signal and a response signal; an attenuator for attenuating the excitation signal; a coaxial structure current probe for observing the injection signal and the response signal at the same time; a coaxial clamp for fixing the tested cable; and an impedance match network. The invention has the following technical effects: (1) the invention is suitable for the time domain testing method, and the frequency domain transfer impedance curve can be acquired through the data process; (2) the injection pulse and the response pulse waveforms can be observed at the same time, and the pulse wave shield effect can be directly acquired; and (3) the acquired model can be applied to the analysis of the cable on the electromagnetic pulse coupling condition.