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Browse Prior Art Database

Card Extender for Logic Cards

IP.com Disclosure Number: IPCOM000040751D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 87K

Publishing Venue

IBM

Related People

Clark, SD: AUTHOR [+5]

Abstract

This invention solves the problem of probing and debugging logic cards by allowing the cards to function outside their cage. The card extender connects to the pins of a related ZIF (Zero Insertion Force) connector supplying proper interconnection, cooling, and support for the card being probed. It also uses very short signal lines keeping signal delay to a minimum. The lower support 1 is a plastic frame and holds the lower ZIF connector 4, which snaps under four plastic retainers, and also a 3-1/8-inch cooling fan 3. The upper support 2, also a plastic frame, holds the upper ZIF connector 7 under four plastic retainers and snaps over the lower support 1, to complete the assembly. The card 6 to be probed is inverted and inserted in the two ZIF connectors 4 and 7.

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Card Extender for Logic Cards

This invention solves the problem of probing and debugging logic cards by allowing the cards to function outside their cage. The card extender connects to the pins of a related ZIF (Zero Insertion Force) connector supplying proper interconnection, cooling, and support for the card being probed. It also uses very short signal lines keeping signal delay to a minimum. The lower support 1 is a plastic frame and holds the lower ZIF connector 4, which snaps under four plastic retainers, and also a 3-1/8-inch cooling fan 3. The upper support 2, also a plastic frame, holds the upper ZIF connector 7 under four plastic retainers and snaps over the lower support 1, to complete the assembly. The card 6 to be probed is inverted and inserted in the two ZIF connectors 4 and 7. The lower connector assembly 5 consists of two high-density, right-angle connectors 8 with the pins soldered to a PC board 9 which crosses the signals from right to left and left to right between the upper and lower connectors 8, so that the correct signal is brought to the correct edge contacts on the inverted card 6. One of the connectors 8 is plugged on the lower ZIF connector 4. The card extender assembly is then plugged to the logic package by plugging the lower connector 8 to the pins on the upper ZIF connector which previously held the card 6 when it was inside the logic package. The card 6 is then probed through the opening in the upper support 2.

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