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Problem Determination/Isolation Using a Reversible Circuit Card

IP.com Disclosure Number: IPCOM000041717D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 38K

IBM

Related People

McDowell, AW: AUTHOR [+1]

Abstract

The illustrated circuit card 10 configuration allows a selection in circuit paths by simple reversal of the card so as to facilitate disconnection of a feature 12 from a unit 14, for problem isolation or otherwise. Fig. 1 shows the card 10 in place (with connectors A, B, C engaged) for normal operation in a circuit between a digital logic card 16 and an analog card 18. In this case, card 18 is operable selectively with feature 12 or card 16 under the control of switch circuit 20 in card 10. Fig. 2 shows the card 10 in reversed position. A jumper 22 in the card 10 connects the digital and analog cards 16 and 18 together via connectors D and E (in place of A and B) and isolates them from the switch circuit 20 if card 10 for operation independently of feature 12.

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Problem Determination/Isolation Using a Reversible Circuit Card

The illustrated circuit card 10 configuration allows a selection in circuit paths by simple reversal of the card so as to facilitate disconnection of a feature 12 from a unit 14, for problem isolation or otherwise. Fig. 1 shows the card 10 in place (with connectors A, B, C engaged) for normal operation in a circuit between a digital logic card 16 and an analog card 18. In this case, card 18 is operable selectively with feature 12 or card 16 under the control of switch circuit 20 in card 10. Fig. 2 shows the card 10 in reversed position. A jumper 22 in the card 10 connects the digital and analog cards 16 and 18 together via connectors D and E (in place of A and B) and isolates them from the switch circuit 20 if card 10 for operation independently of feature 12.

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