Browse Prior Art Database

PS/2 Card Extender Rigid Support Mechanism

IP.com Disclosure Number: IPCOM000100771D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Rettammel, GJ: AUTHOR [+2]

Abstract

Under certain circumstances, e.g., when trouble shooting or debugging a micro-channel or other printed circuit board, it is necessary to operate the card in an extended mode, that is, outside the personal computer system unit. This is typically performed in a laboratory area where special-purpose interface cards are under development. The card is probed while it is under control of the personal computer operating system.

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This is the abbreviated version, containing approximately 100% of the total text.

PS/2 Card Extender Rigid Support Mechanism

       Under certain circumstances, e.g., when trouble shooting
or debugging a micro-channel or other printed circuit board, it is
necessary to operate the card in an extended mode, that is, outside
the personal computer system unit.  This is typically performed in a
laboratory area where special-purpose interface cards are under
development.  The card is probed while it is under control of the
personal computer operating system.

      As the card must operate outside the personal computer system
unit to allow probing, the pressure which is applied to the back of
the card by the probe can cause the card to fall from the extender
slot or to loosen the card sufficiently to break contact to the
socket, thus opening the signal lines to the card while under test.

      This disclosure proposes the aid of an external insulated card
support to eliminate the problems discussed above.   As shown in the
figure, the card under test is held in firm contact with the rear
edge of the personal computer system unit by using the card support.
The card support is attached to the system unit at Point A and is
attached to the card at Point B.

      The ribs present on the system unit insure that  when the rigid
card support is in place, there is movement neither in the vertical
nor in the horizontal plane.