Don't Fail Good Boards
By understanding false failures in board testing and the tradeoffs involved in eliminating them, you can improve both the speed and quality of your testing.
Ted T. Turner, Hewlett-Packard, Loveland, CO -- Test & Measurement World, 3/1/1997
When you test analog PCBs, good boards can fail a test. This syndrome has many names such as "no defect found" (NDF), "no trouble found" (NTF), "false reject," and my favorite, "false failure." You must learn how to detect false failures and how to set test limits to avoid them.
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