Electricity: measuring and testing – Plural – automatically sequential tests
Patent
1986-09-23
1988-08-09
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Plural, automatically sequential tests
324158R, 371 25, G01R 19165, G01R 1910
Patent
active
047630663
ABSTRACT:
The apparatus (10) includes a semiconductor tester (12) which in operation produces an analog signature signal relative to a circuit node of an electronic circuit, such as a pin connection of an integrated circuit. The analog signature signal is the result of horizontal and vertical signals which are also directed to an integrator/A-D converter (44) which produces therefrom a set of four digital signals representing said analog signature. These digital signals are then compared in a computer (50) against reference digital values for the same circuit node of the same electronic circuit which is known to be good. If the digital signals are not within a selected range relative to the reference digital values, the analog signature of the circuit node is displayed for inspection and evaluation by an operator.
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Hoo James W.
Howard Alan D.
Pennock James L.
Yeung Paul K. K.
Burns W.
Eisenzopf Reinhard J.
Huntron Instruments, Inc.
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