Apparatus and method for measuring and examining signals of a system that emits measurable signals in operation or in response to external excitation

摘要

When operating or and measurement equipment which it measures and appraises the signal of the system which discharges the measurable signal on the basis of the effect of external excitation the (1) is. This device includes signal reception unit (2) and output unit (5,6). It executes fourier transform vis-a-vis the signal of the time dependence which is caught by reception unit calculates the power density function of fourier transform, the fitting it does the function which possesses a exponent, vis-a-vis power density function the appraisal unit which transmits a exponent which is obtained to the output device (3,4) it includes.