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Card Test Flexibility with Reduced Lead Length

IP.com Disclosure Number: IPCOM000053935D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Newsom, TH Racine, FA [+details]

Abstract

In the past, logic testers have had program boards added to allow interface circuitry between special logic under test and the tester. This produces added lead length to get in and out of the program board not only for the special pins but for all others also. The interposer minimizes lead length for special pins and adds none for the regular pins. The interposer is an air operated device which holds a program card and allows interfacing to two surfaces with probes and the bottom card connector through a maple block. On each side of the interposer the probes are broken into two groups of 48 pins, separated vertically by .200 inch. One side will be referred to as the "in" side and the other as the "out" side. Fig. 1 is a simplified diagram of the program card in a side elevation. Fig.