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Boundary-scan memory interconnect test

Staff - August 1, 2004

The ScanDIMM-SO200 intelligent boundary-scan socket tester performs interconnect tests on 200-pin DDR (double-data-rate) SODIMM (small-outline dual-inline memory module) sockets. Inserting the ScanDIMM-SO200 into the DIMM socket of a unit under test results in placing a fully bidirectional boundary-scan cell behind each pin of the DIMM connector, increasing the test coverage to include not only data and address signal pins but also clock, control, and power and ground pins. With this cell architecture, test-pattern-generation tools can apply optimal diagnostic algorithms to isolate failures.

Traditionally, testing a DIMM socket connection was performed by inserting a standard memory module into the DIMM socket and executing a memory-pattern test via boundary scan. To test the 200-pin SODIMM socket connections using this technique, specific patterns had to be written to memory and then read back for diagnostics. This technique is limited by the amount of test coverage it can provide, the limited amount of diagnostic information that can be obtained once a fault is detected, and the extended length of time it takes to execute. The ScanDIMM-SO200 is compatible with the Corelis ScanPlus software and comes with necessary cabling.

Base price: $895. Corelis, Cerritos, CA.www.corelis.com.