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Test System for Circuit Card

IP.com Disclosure Number: IPCOM000084866D
Original Publication Date: 1976-Jan-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

App, RH: AUTHOR [+3]

Abstract

Logic and storage cards for data processing equipment are commonly tested by applying selected operating voltages and a test data pattern to the card, and then comparing the response of the card with an expected response. During manufacturing, testing cards are ordinarily limited to a test that shows whether the card is satisfactory or unsatisfactory for actual use in a product. By contrast, a card test during product development commonly involves interaction between the test apparatus and the circuit development personnel. When a card is shown to be defective under a particular test, the development personnel may select a subsequent test that gives further information about the failure.

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Test System for Circuit Card

Logic and storage cards for data processing equipment are commonly tested by applying selected operating voltages and a test data pattern to the card, and then comparing the response of the card with an expected response. During manufacturing, testing cards are ordinarily limited to a test that shows whether the card is satisfactory or unsatisfactory for actual use in a product. By contrast, a card test during product development commonly involves interaction between the test apparatus and the circuit development personnel. When a card is shown to be defective under a particular test, the development personnel may select a subsequent test that gives further information about the failure.

The system of the drawing uses a card tester of the type shown on pages 3669-3670 of the IBM Technical Disclosure Bulletin, Vol. 15, No. 12, May 1973. The tester itself has a sequence of registers that hold information about the test and the test results. When an error is found during a card test, the tester signals a processor with an Interrupt. The processor then operates a display to present test information to the development personnel.

Information is presented on the display in the form of a table. Rows in the table hold particular items of information, and as a preliminary operation the processor sets up row titles along the left-hand portion of the display. In addition, some of the rows may hold headings that give a group identification to seve...