用示波器观测眼图

Eye_Patterns_in_Scopes-designcon_2005DesignCon 2005

Eye Patterns in Scopes

Peter J. Pupalaikis, LeCroy Corporation PeterP@LeCroy.com Eric Yudin, LeCroy Corporation Eric.Yudin@LeCroy.com

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Abstract
There is much industry confusion regarding how eye patterns look when measured by scopes. This confusion is related to the characteristics of serial data and the characteristics of scopes. This paper and an accompanying software tool called IRIS is presented to provide education on the interaction of serial data and scope characteristics in measurements. The paper looks at how each individual scope characteristic interacts with the serial data characteristic in both frequency domain and time domain, specifically attempting to provide insight into how one characteristic affects the eye pattern. Additionally, we try to build up r