PULSE PATTERN GENERATOR AND COMMUNICATION DEVICE EVALUATING SYSTEM USING SAME

摘要

A pulse pattern generator (11) comprises a pulse generating section (12) having amplitude value setting section (13, 13a), and a low-pass filter (14). The pulse generating section (12) generates a pulse signal composed of a step wave varying stepwise at least at the rise or fall of the signal. The low-pass filter (14) smoothes the pulse signal generated by the pulse generating section (11) and outputs the smoothed signal. The amplitude value setting section (13, 13a) adjusts the amplitude value of the step wave constituting the pulse signal so as to set the shape of the eye waveform of when the output from the low-pass fitter (14) is eye-patterned according to a preset value. The pulse pattern generator (11) enables the low-pass filter (14) to output a pulse signal having a desired pulse pattern having a preset predetermined eye opening degree.