| 摘要 |
A parameter acquisition section acquires model information about a waveform simulation model of a system of signal transmission, a first parameter of a waveform variation in a time direction in the system, and a second parameter of a waveform variation in an amplitude direction in the system. A first eye pattern calculation section calculates a first eye pattern of the system through a waveform simulation based on the model information acquired by the parameter acquisition section. A second eye pattern calculation section calculates, based on the first and second parameters acquired by the parameter acquisition section, a second eye pattern through processing of the first eye pattern calculated by the first eye pattern calculation section. And a transmission margin calculation section calculates, as a transmission margin, a positional relationship between a specific area and an aperture of the second eye pattern calculated by the second eye pattern calculation section.
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