Spread spectrum clock generator and spread spectrum clock generation method, pulse pattern generator and pulse pattern generation method, and error rate measuring device and error rate measuring method.

摘要

PROBLEM TO BE SOLVED: To provide a spread spectrum clock generator and a spread spectrum clock generation method, a pulse pattern generator and a pulse pattern generation method capable of switching waveform patterns without discontinuously shifting the frequency shift of the waveform of a modulation signal. , And an error rate measuring device and an error rate measuring method. SOLUTION: A reference signal generation source 10 for generating a reference signal, a modulation signal generator 120 for generating a modulation signal, and a modulation unit 137 for frequency-modulating the reference signal with the modulation signal to generate an SSC modulation signal. The modulation signal generator 120 is provided with a modulation signal when the tilt information reaches a predetermined constant value after the timing at which a switching instruction for switching the waveform pattern of the modulation signal is input from the outside. The pattern of the waveform of is switched from the first pattern to the second pattern. [Selection diagram] FIG. 12