Browse Prior Art Database

Shorts Tester

IP.com Disclosure Number: IPCOM000040440D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Ambrico, LE Fricke, CC [+details]

Abstract

Apparatus or tester 10 is designed to manually or automatically test a card 11 for shorts prior to burn-in. The test thus protects cards from becoming damaged due to shorts during burn-in. Further, the apparatus protects cards from becoming damaged during test due to excessive voltage. In manual mode, an ohmmeter 12 is connected to a ganged rotary switch 13 so that by operator rotation of the switch, various test points of card 11 are connected to ohmmeter 12, which can be observed by the operator for shorted conditions. To test a card in automatic mode, an operator first plugs the card into a test fixture and presses the "start" button 15. The test for shorts is then performed under microprocessor control. Each test point is checked against all remaining test points for shorts.