Sampling signal generating circuit for sampling apparatus and di

Details Sampling signal generating circuit for sampling apparatus and di Sampling signal generating circuit for sampling apparatus and di

1996-02-08

1999-06-22

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Cathode ray

702 67, G01R 1334

Patent

active

059145927

ABSTRACT:
A signal from an original oscillation circuit is inputted into a phase-locked loop circuit capable of continuously varying a frequency of this signal derived from the original oscillation circuit. The phase-locked loop circuit changes the frequency of the signal derived from the original oscillation circuit into another frequency corresponding to sweep rate variable information derived from a sampling control unit, and then outputs the signal having the changed frequency. This signal outputted from the phase-locked loop circuit is supplied to a variable frequency dividing circuit. This variable frequency dividing circuit frequency-divides the frequency of the signal outputted from the phase-locked loop circuit at an arbitrary frequency dividing ratio corresponding to the sweep rate range information given from the sampling control unit, and thereafter outputs the signal with the frequency-divided frequency as a sampling signal.

REFERENCES:
patent: 5162723 (1992-11-01), Marzalek et al.

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