Time measurement in automatic test equipment

Details Time measurement in automatic test equipment Time measurement in automatic test equipment

1987-01-16

1988-12-20

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

324 78F, G04F 800, G01R 2302

Patent

active

047929324

ABSTRACT:
Apparatus for automatically testing electronic circuits and performing time measurements, including a time measuring circuit for counting clock pulses provided between stop and start event edges presented to it, two independent input selectors for each selectively connecting one of a plurality of its inputs to the time measuring circuit, and a plurality of local comparators located within the test apparatus near sources of signals to be timed and generating an event edge upon receiving a signal crossing a threshold value. Also disclosed are making time measurements of signals at digital and analog pins using local comparators connected to input selectors over deskewed transmission paths and connecting a local comparator to the filter output of an analog instrument.

REFERENCES:
patent: 4362394 (1982-12-01), Menlove
patent: 4492918 (1983-01-01), Hernandez et al.
patent: 4640134 (1987-02-01), Simmons
M 606 Users Manual, Section, Jun. 1985, Texradyne Inc.
Hewlett Packard, Time Interval Calibrator, Technical Data, Mar. 1986.

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