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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Transient Analysis >
   Adding a Voltage Probe for Eye Measurement Reports >
       Add Voltage Probe to Schematic           


Add Voltage Probe to Schematic

The Voltage Probe may be selected from the Probes list on the Components tab:

Both single-ended and differential versions are available.

Right-click on the Voltage probe and select Edit Properties:

Set the Name parameter to a unique name for the probe.

Click on the EyeMeasurementFunctions button to open the Set Eye Measurement Functions dialog:

•  In the Function field, select MinEyeWidth or MinEyeHeight.

•  Set the Unit Interval parameter to the Unit Interval (UI) of the Eye diagram.

•  Set the Start Offset parameter if an initial time offset is desired.

•  Set the End Offset parameter if trailing time offset is desired.

•  Leave Auto Crossing Amplitude set to 1 (or any non-zero number) to have Nexxim compute the crossing amplitude by averaging the histograms for the high and low voltages. The crossing amplitude sets the voltage at which the minimum eye width is calculated.

•  When Auto Crossing Amplitude is 0, Nexxim uses the voltage set in the Crossing Amplitude parameter as the crossing voltage amplitude for the minimum eye width calculation.

•  Leave Auto Compute Eye Measurement Point set to 1 (or any non-zero number) to have Nexxim compute the eye measurement point by averaging the times of the crossing points. The eye measurement point sets the time at which the minimum eye height is calculated.

•  When Auto Compute Eye Measurement Point is 0, Nexxim uses the voltage set in the Eye Measurement Point parameter as the time for the minimum eye height calculation.

•  Click Add to add the measurement to the analysis. You can add any number of measurements. The dialog above has added a MinEyeWidth measurement using the default settings.

•  Click OK to close the Set Eye Measurement Functions dialog.

Click OK to close the Properties window of the probe.



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