Test fixture with self contained shorting means for testing smal

Details Test fixture with self contained shorting means for testing smal Test fixture with self contained shorting means for testing smal

1997-05-12

1999-11-23

Karlsen, Ernest

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324754, G01R 1073

Patent

active

059906960

ABSTRACT:
A printed circuit board tester has a pattern of test probes on a base upon which a translator fixture is mounted. The translator fixture includes a plurality of essentially parallel and vertically spaced apart rigid translator plates having selected patterns of holes containing translator pins for contacting test points on a printed circuit board supported at one end of the translator fixture. The pins translate electrical test signals between test points on the printed circuit board and the test probes on the base of the tester. The fixture includes a retractable shorting plate extending through a top plate of the fixture capable of being pressed into shorting contact with small scale test packs on the printed circuit board, preferably by a pneumatic cylinder position within the fixture. A base receptacle is rigidly secured to a base plate of the fixture for releasably attaching the cylinder within the fixture. The shorting plate includes a layer of conductive rubber for shorting the test pads within the test pack.

REFERENCES:
patent: 3068403 (1962-12-01), Robinson
patent: 4004843 (1977-01-01), Boenning et al.
patent: 4099120 (1978-07-01), Aksu
patent: 4340860 (1982-07-01), Teeple, Jr.
patent: 4899104 (1990-02-01), Maelzer et al.
patent: 5654646 (1997-08-01), Kit
IBM Technical Disclosure Bulletin, vol. 35, No. 7, Dec. 1992, Combination Test Adapter, pp. 164-165.

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