Patent ID: 8175828

Claim:
An evaluation apparatus that evaluates a characteristic of a propagation apparatus propagating a signal, comprising: an output signal measuring section that measures a probability density function expressing a probability density distribution of jitter of an output signal passed by the propagation apparatus; an isolating section that isolates at least one of a random component of a jitter component and a deterministic component of the jitter component in the jitter of the output signal, from the probability density function of the jitter of the output signal; and an evaluating section that evaluates the characteristic of the propagation apparatus based on the jitter component isolated by the isolating section, wherein the isolating section includes: a standard deviation calculating section that calculates a standard deviation of the probability density function; a spectrum calculating section that calculates a spectrum of the probability density function; a null frequency detecting section that detects a null frequency of the spectrum; a theoretical value calculating section that calculates a theoretical value of a spectrum for each of a plurality of predetermined types of deterministic components, based on the null frequency detected by the null frequency detecting section; a measured value calculating section that calculates a measured value of the spectrum of the deterministic component in the probability density function, based on the standard deviation calculated by the standard deviation calculating section and the spectrum calculated by the spectrum calculating section; a model determining section that determines the type of the deterministic component in the probability density function to be the type of deterministic component corresponding to a theoretical value closest to the measured value calculated by the measured value calculating section, from among the theoretical values calculated by the theoretical value calculating section for the plurality of types of deterministic components; and a deterministic component calculating section that calculates the deterministic component in the probability density function, based on the type of the deterministic component determined by the model determining section and the first null frequency detected by the null frequency detecting section.