Viewing and Exporting Insertion/Return Loss and Time Domain Crosstalk Plots
Prerequisites:
- Use the Impedance Wizard to calculate trace width/pitch, impedance, or differential impedance.
To calculate and plot IL/RL/FEXT/NEXT:
- From the Plots window, select the W-Element Plots tab:
- Use the IL/RL and FEXT/NEXT tabs to choose a plot:
The selected plot displays:
- Adjust the settings as appropriate:
For IL/RL plots, you can adjust the Tline Length or click Set frequency range to change the frequency range of the plot.
For FEXT/NEXT plots, you can adjust the Tline length (trace length); edit the Rise time, Stop time, and peak Voltage of the driver attached to the aggressor net; or modify the driver Input Impedance value. This impedance is also used to terminate all transmission lines in the specified cross-section.
Selecting the Preserve Plot check box allows you to display previous plots while computing additional plots.
If you wish to export plot data, click Export Options:
- For IL/RL plots, you can choose Export w-element schematic to circuit (in *.aedt format) or Export touchstone file.
- For FEXT/NEXT plots, you can choose Export w-element schematic to circuit (in *.aedt format) or Export .csv file.
If you change values and need to regenerate the plot, click Recompute.
Right-clicking within the plot enables additional plotting actions.