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Eye Diagram Measurements VIs

LabVIEW 2012 Jitter Analysis Toolkit Help

Edition Date: June 2012

Part Number: 373270B-01

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Owning Palette: Jitter Analysis VIs

Requires: Jitter Analysis Toolkit. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Eye Diagram Measurements VIs to construct an eye diagram that displays information about jitter in a waveform signal. In eye diagrams, corresponding segments of a waveform are superimposed upon each other to illustrate variations in the time at which features in the waveform occur.

Examples

Palette ObjectDescription
Eye Color and Scale GenerationConfigures the colors you want to map to particular values in an eye diagram.
Eye Data GenerationDivides a waveform into segments and returns data you can use to create an eye diagram. Wire data to the waveform input to determine the polymorphic instance to use or manually select the instance.
Eye Diagram SupportFormats data about waveform segments and optionally, a mask and eye height and width lines, into an array of values you can plot on an eye diagram.
Eye Height and WidthComputes the height and width of the eye opening and adds data to the eye diagram information that allows you to plot those values in an eye diagram. You must manually select the polymorphic instance to use.
Eye Pattern Limit TestApplies a mask to an eye diagram to perform limit testing on unit intervals in the diagram. Wire data to the waveform input to determine the polymorphic instance to use or manually select the instance.
Eye Pattern Mask DefinitionDefines a region, or mask, with which you want to compare unit intervals in an eye diagram to determine whether values fall within the mask you specify. Masks typically represent an area in the eye opening that you want to ensure unit intervals do not fall within.
Quality FactorMeasures the quality of a waveform based on the histograms at the base and top of an eye diagram formed from the waveform. Wire data to the waveform input to determine the polymorphic instance to use or manually select the instance.

Examples

Refer to the following VIs for examples of using the Eye Diagram Measurements VIs:

  • Basic Eye Diagram VI: labview\examples\Jitter Analysis\Eye Diagram Measurements
  • Mask and Limit Test VI: labview\examples\Jitter Analysis\Eye Diagram Measurements

 

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