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Minus Coplanarity is simply the distance between the lowest fiber and the “best-fit plane” through the array of fibers (also called the “fiber line”). It is a measure of fiber height variation within an array of fibers. A lower number is better, with a value of “0” indicating the theoretical ideal – all fibers are EXACTLY the same height.

The best-fit plane is a line through the array of fiber protrusions calculated by using the mathematical “least square method.” Think of it as a straight line through the array which is the best representation of all heights. The least square method is high-school math and not extremely complicated, but it is exactly the same formula used in Excel graphs when you add a linear trendline through data points.

 

READ THE BLOG: MT Ferrule Geometry Specifications: Minus-Side Coplanarity in IEC 61755-3-31:2015

 

Additional resources from the FOC team include:

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Kathleen Skelton

About Kathleen Skelton

Kathleen Skelton, as FOC's Director of Strategic Marketing, utilizes her expertise in business development, online strategy, market planning, digital best practices, standard operating procedure development, and content management. A graduate of Curry College, she holds degrees in Communications and Education, English and Psychology. Kathleen resides outside of Boston, MA with her husband and four children. Follow @KATHLEENSKELTON