| 摘要 |
PROBLEM TO BE SOLVED: To acquire waveform information correctly, even for a signal with long recursive period. SOLUTION: A operation means 22 calculates: integers Q, N satisfying a relation where the difference between an integer N times of the recursive period Tx of the input signal S, and an integer Q times of the sampling period Ts is the same as the offset delay timeΔT; and the sampling period Ts corresponding to the integers Q, N. The light sampling part 25 performs the sampling to the input signal S with the calculated sampling period Ts. The data acquisition means 34 acquires the wave form information of the input signal from the signal Eo obtained by the sampling while synchronizing with the second clock signal C2 having the period of Q times of the sampling period Ts. COPYRIGHT: (C)2006,JPO&NCIPI
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