The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1977
Filed:
Sep. 05, 1975
Russell H Bowen, Seminole, FL (US);
Allen L Clark, Odessa, FL (US);
David C Davis, Clearwater, FL (US);
Walter E Gilbert, Largo, FL (US);
Wayne L Glover, Odessa, FL (US);
Richard J Walsh, Brooksville, FL (US);
Robert G Wehling, Tampa, FL (US);
Honeywell Information Systems, Inc., Waltham, MA (US);
Abstract
An automatic printed circuit board tester to test printed circuit boards and diagnose faults in digital and analog electrical circuit networks is disclosed. The system is comprised of control, stimuli, and interconnection networks in combination with measuring instrumentation. For automated fault isolation, a moving probe assembly driven by stepping motors controlled by a minicomputer is utilized. The fault isolation system establishes a fault path from an output pin to a terminal point within the network. The location of the terminal point together with a directed graph is utilized to select branches that could cause the failure.