| 摘要 |
PROBLEM TO BE SOLVED: To easily and accurately generate a clock signal, which satisfies an arbitrary TDEV mask. SOLUTION: A noise generating means 25 inputs a white noise signal n (k) composed of a pseudo random signal generated by a prescribed algorithm to a convolution arithmetic means 28, convolution arithmetic (filtering processing) with a tap coefficient h (t) provided on the basis of the characteristic information of desired time deviation characteristics set by a characteristic information setting means 23 is performed, an oscillating signal stream having power spectrum density distribution characteristics corresponding to the desired time deviation characteristics is generated, and the signal of a frequency modulated by this oscillating signal stream is outputted from a DDS 30.
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