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应用文章
Introduction
This application note describes a boundary scan solution for Blade Server board using the x1149 Boundary Scan Analyzer. External cards like Keysight DDR4 SODIMM test card and PCIE loopback card are used in this solution to improve test coverage. In this approach, we will show you how x1149 multi-chain feature is used in different configurations to achieve boundary scan interconnection which provides testing for both Open and Shorts coverage between the interconnected device pins.
The objective is to demonstrate a viable boundary scan solution for blade server board in manufacturing environments using the x1149 and Keysight customized DDR4 SODIMM test cards and PCIE loopback cards to achieve full (both open and shorts) coverage for as high as 20% of the board’s total node count.
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