Frequency divider testing circuit clock-sampling window variable

Details Frequency divider testing circuit clock-sampling window variable Frequency divider testing circuit clock-sampling window variable

1997-08-20

1999-12-28

Ballato, Josie

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

327 47, 324 7672, G01R 2302

Patent

active

060086556

ABSTRACT:
For testing a frequency divider, oscillations are produced and wave-shaped into a series of dock pulses. The dock pulses are supplied to a frequency divider under test. A window pulse of duration equal to one cycle of the output pulses of the frequency divider is used to sample the clock pulses. The sampled clock pulses are counted and compared with a reference value. Depending on the number of the sampled clock pulses relative to the reference value, an output voltage at one of two discrete values is produced to indicate the result of the test.

REFERENCES:
patent: 3304504 (1967-02-01), Horlander
patent: 3895293 (1975-07-01), Munz
patent: 3971994 (1976-07-01), Shepherd
patent: 3990007 (1976-11-01), Hohhaf
patent: 4168467 (1979-09-01), Bailey et al.

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