Automatic circuit tester employing a three-dimensional switch-ma

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor

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324 731, 361416, 371 226, G01R 3100, G01R 3128, H05K 114

Patent

active

051246384

ABSTRACT:
An automatic circuit tester (10) employs a scanner (20) embodied in a group of interconnected main scanner boards (46, 47) that provide switching by means of mechanical relays. In order to provide a cross-point matrix and structure without unacceptable stub lengths, the relays are mounted on auxiliary boards (114) that extend transversely from the surface of each main board (46, 47). The main scanner boards plug into a scanner bus (50) in such a manner as to permit them to connect or disconnect adjacent links (70A-H, 72A-H) in sequences of links in the scanner bus (50).

REFERENCES:
patent: 3206648 (1965-09-01), Jordan, Jr. et al.
patent: 4472765 (1984-09-01), Hughes
patent: 4511950 (1985-04-01), Bunner et al.
patent: 4620304 (1986-10-01), Faran, Jr. et al.
patent: 4746855 (1988-05-01), Wrinn
patent: 4801871 (1989-01-01), Tada et al.
patent: 4862067 (1989-08-01), Brune et al.
"HP75000 Family of VXI Products," Hewlett Packard brochure, Fall and Winter, 1989.
"Instruments & Systems" catalogue, Racal-Dana Instruments, Inc 1988.

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