Browse Prior Art Database

Opens/Shorts Tester

IP.com Disclosure Number: IPCOM000102858D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 47K

Publishing Venue

IBM

Related People

Blair, EA: AUTHOR [+4]

Abstract

A technique is described whereby an opens/shorts tester provides an automatic mechanism for testing of electrical products. The tester eliminates hand probing operations and obviates manual inverting of a product for bottom surface testing. It is an improvement over previously used testers in that manual probe operations are eliminated.

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Opens/Shorts Tester

      A technique is described whereby an opens/shorts tester
provides an automatic mechanism for testing of electrical products.
The tester eliminates hand probing operations and obviates manual
inverting of a product for bottom surface testing.  It is an
improvement over previously used testers in that manual probe
operations are eliminated.

      The tester is particularly adaptable for the testing of
glass-ceramic substrates, as used in semiconductor fabrication.  A
primary feature of the improved tester is that it is software
menu-driven for bottom surface-stepped coaxial probing.

      Incorporated within tester is a load/unload device, a part
number reading unit, defect analysis and characterization unit,
parametric resistance/capacitance testing and a maintenance station
which permits changing of product clamping fixtures as a function of
product size.

      The tester provides a series of functions which are enabled by
the use of separate devices, such as a shielded coaxial (split)
probe, a shorting matrix assembly, a product clamping fixture, a
serial read camera, a probe continuity/shorting verification unit, a
set-up master substrate unit, an anti-crash network and two top
surface viewing cameras.

      The operations provided by the tester enable an entire test to
occur in less than ninety seconds.  Typical operations include the
recording of a lot number, clamping of the product to be tested,
shuttle action to ind...