Patent ID: 8339146

Claim:
A calibration method for calibrating transient behaviour of a transmission line pulse test system which includes a transmission line pulse generator for generating predetermined pulses for analyzing a device under test; probe needles for applying said predetermined pulses on the device under test; transmission lines connecting said probe needles to said transmission line pulse generator, said transmission lines being nominally impedance matched with said transmission line pulse generator; and measurement equipment for detecting transient behaviour of said device under test by simultaneously capturing voltage and current waveforms over said device under test as a result of said pulses, said measurement equipment being connected between said transmission lines and said transmission line pulse generator, the calibration method comprising the steps of: (a) applying the transmission line pulse test system on an open and capturing first voltage and current waveforms with said measurement equipment; (b) applying the transmission line pulse test system on a calibration element having a known finite impedance and a known transient response and capturing second voltage and current waveforms with said measurement equipment; (c) transforming the captured first and second current and voltage waveforms to the frequency domain; and (d) determining calibration data for the transient behaviour of said transmission line pulse test system on the basis of said transformed first and second voltage and current waveforms.