Tester for measuring signal propagation delay through electronic

Details Tester for measuring signal propagation delay through electronic Tester for measuring signal propagation delay through electronic

1990-07-16

1992-01-21

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

324 731, 331 57, G04F 800, G01R 1512

Patent

active

050832999

ABSTRACT:
A tester for measuring the time with which a signal propagates through an electronic component is comprised of a ring oscillator in which pulses are periodically generated and propagated around a loop. Within this loop, a fixture is disposed for selectively holding either the electronic component that is to be tested, or a shorting plug, in a removable fashion. Pulses from the ring oscillator propagate through the fixture, and their period reflects whether the component/shorting plug is being held. Coupled to the loop is a timing circuit which generates a timing signal each time it receives a predetermined number of the pulses on the loop. Using this timing signal, the signal propagation delay through the electronic component is determined substantially more accurately than that which is attainable by measuring propagation delay through the component directly.

REFERENCES:
patent: 4587480 (1986-05-01), Zasio
patent: 4688947 (1987-08-01), Blaes et al.
patent: 4771251 (1988-09-01), Allen et al.
patent: 4858208 (1989-08-01), Swapp
patent: 4878209 (1989-10-01), Bassett et al.
patent: 4890270 (1989-12-01), Griffith

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