Koji Michishita

Accuracy in digital measurement of single-shot waveform

The single-shot waveform is often the object of high-voltage measurement. The estimation method must be established. It is important to know the quality of random error and to estimate the substantial resolution, called the EB (effective bits). The average method and revised average method are presented. It is shown that the revised average method is superior by experiment and simulation. The standardization of the digitizer in high-voltage measurement is discussed. The measuring accuracy in the worst case using raw data must be estimated for the standardization of the digitizer. The estimated measuring accuracy of Gaussian pulse in the worst case is presented. From these results a digitizer with optimum characteristics can be selected for the measurement of dielectric phenomena.<<ETX>>