Filtering for electronic module test

Details Filtering for electronic module test Filtering for electronic module test

1994-10-31

1996-07-30

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

324605, 364579, G01R 1912

Patent

active

055415202

ABSTRACT:
A method and apparatus for determining when transient responses of a signal have ended. A plurality of filters is provided. Operation of success of filters is cause to begin at successive times. The convergence of the outputs of the various filters is then tested. When convergence is detected, the signal provided by the first started filter of the successive filters that indicated convergence is used as an output signal. The signal is typically an electronic module test signal from an electronic module. Testing for convergence is performed by averaging outputs of each filter started to determine an average value; determining a deviation of each output of the filters from the average value; totaling the deviation to determine a total deviation; and comparing the total deviation to a reference level. Preferably, the total deviation is integrated over a period of time to provide an integrated total deviation; and the integrated total derivation is compared to the reference level.

REFERENCES:
patent: 3372765 (1968-03-01), Hatton
patent: 4172477 (1979-10-01), Reich
patent: 4810950 (1989-03-01), Young
patent: 4896530 (1990-01-01), Lehmann
patent: 5162744 (1992-11-01), Koozer

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