Accession Number : AD0650993

Title :   MULTI-CORE ASSEMBLY AUTOMATIC TEST PROGRAM,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Komiske,Patrick T.

Report Date : 11 JUL 1963

Pagination or Media Count : 20

Abstract : An automatic test system was designed to test electrically the memory multi-core assemblies after each step of the fabrication cycle, i.e., after multi-core assembly; resistance-welding of wire to terminals; varnishing; addition of components, matrix, headers; welding; and encapsulation. This is accomplished by performing a continuity (static) test on each multi-core assembly. Each multi-core assembly terminal is checked with a mating terminal for continuity (discontinuity), and each terminal is permutated with an appropriate terminal or series of terminals (phases) to check for opens (normal condition). The number of turns per core (or phases of cores) is determined by accurately measuring resistance. The same test is performed after matrices have been added. At this level-of-testing, the test is expanded. A forward and reverse test on diodes is included. All measurements are in volts. The measured values are converted to ohms for outputting visually, on printed paper, and punched paper tape. Test results are immediately available for comparison with the test specification. (Author)

Descriptors :   (*MEMORY DEVICES, TEST SETS), AUTOMATIC, DATA STORAGE SYSTEMS, VOLTMETERS, POWER SUPPLIES, RECORDING SYSTEMS, SCANNING, PANEL BOARDS(ELECTRICITY), TEST EQUIPMENT

Subject Categories : Computer Hardware
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE