Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
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.
Ballato Josie
NEC Corporation
Sundaram T. R.
LandOfFree
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