What is all this Cp and Cpk stuff mean in WaveRIDER/OvenRIDER SPC Software version 3.17?
Process capability index is a standard measure of how a process compares with its specification limits-how a process is performing relative to how it is supposed to perform. As opposed to the control chart, which shows detailed information about how the data compares with control limits, a capability index is a summary of how the data compares with the specification limits. For more information see: http://www.ecd.com/emfg/instruments/cpk.asp Q5.7: Using WaveRIDER, I seem to get more solder wave variation than I would expect. What are some reasons for this? A: Solder wave variation happens. It is by nature a dynamic process caused by the pumping of a liquid. Through various channels, weirs, rudders, and nozzles, all designed to balance flow across the surface of the wave, liquid solder makes its way to the surface and finally breaks one way or the other depending on the wave shape. Lacking the presence of a printed circuit board, this wave looks even and more or less smooth on typical
Related Questions
- The Secunia OSI detects my software as secure, but I know that there is a more recent version of the software. Does this mean that I am really secure?
- The Digital Editions application asked me to update to the latest version of the software. What does that mean?
- What is all this Cp and Cpk stuff mean in WaveRIDER/OvenRIDER SPC Software version 3.17?
