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Ansoft Designer / Ansys Designer 在线帮助文档：

Generating Reports and Postprocessing >
   Modifying Reports >
       Modifying Eye Diagram Reports           

Modifying Eye Diagram Reports

Double-click on the Report to open a Property window with several tabs.

• Use the General tab to set the background color, plot area, and other general parameters.

• Use the Mask tab to enable and define a mask or keep-out region that is overlaid on the eye diagram. Click Show Mask to enable the edit fields. You can specify the fill color, boundary color, and transparency.

Click the Edit button on the Mask tab to open the Edit Eye Mask dialog:

Use the dialog to specify edit points that define the mask polygon and upper and lower limits as applicable. If desired, you can save the mask setting to a file.

Click OK to display the mask on the eye diagram.

• Here is how the mask appears on the graph:

• Use the Histogram tab to control the display of a histogram that counts the number of crossings of a specified Y-value. In the illustration above, the histogram is in yellow and the Y-value is the orange line. Here is the Property sheet showing the histogram setup fields:

Adding Trace Data to the Eye Diagram Report

Right-click on the Report and select Trace Characteristics > Add from the menu. The Trace Characteristics dialog opens. Select a Category of data, then select a Function within that category. Click Add. The value of the trace characteristic is added to the report display.

Right-click on the Report and select Trace Characteristics > Add All Eye Measurements from the menu to display the trace measurements in tabular format. Here is the result:

Eye Diagram References

A tutorial on interpreting eye diagrams may be found at:

http://www.complextoreal.com/chapters/eye.pdf

Other references on eye diagrams may be found at:

http://www.scientificarts.com/logo/logos.html

http://www.findarticles.com/p/articles/mi_m0HPJ/is_n4_v45/ai_16226058

Related Topics

Eye Measurements

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