Crash Course: Crosstalk Scan Using SIwave
Introduction
This guide will walk you through the process of performing a crosstalk scan using SIwave. Follow the steps below to ensure accurate results.
Step-by-Step Instructions
1. Upload Your File
Start by uploading your file:
- Click on the upload button.
- You will see all the types of files that SIwave can support, mainly IPC 2581 and ODB++.
2. Set Up the Simulation
Proceed to the simulation setup:
- Select crosstalk scan.
- Select all the lines you want to scan, including RF lines and power planes.
- If you have differential lines, you can select them as well, including extended differential lines.
- You can select more than one line and change the setup as needed.
3. Understanding Crosstalk Columns
The crosstalk columns provide important information:
- Far End Crosstalk: If the value is 0.1, it gives you a warning. If it is 0.2, it indicates a violation.
- Near End Crosstalk: Similar warnings and violations apply.
4. Launch the Simulation
Once the setup is complete, launch the simulation to view the results.
Analyzing Results
Displaying Results
After launching the simulation, the results will be displayed:
- Hide everything except the lines.
- The colors indicate the values of the crosstalk, showing how much each section is affected by the rest of the structure.
Near End and Far End Analysis
Analyze the results for both near end and far end:
- Near End: Display the near end results. If there are warnings, it indicates weak areas in terms of crosstalk. No violations should be present.
- Far End: Display the far end results. You may see some violations. This does not necessarily mean there is crosstalk, but if S-parameters indicate crosstalk, you will know which section to focus on for shielding.
Conclusion
By following these steps, you can effectively perform a crosstalk scan using SIwave. For further assistance, consider reaching out to Ozen Engineering, Inc.
Crash Course: Crosstalk Scan Using SIwave Start by uploading your file. Click this button to see the types of files SI Wave supports, mainly IPC 2581 and ODB++. Go to Simulation, select Crosstalk Scan.
Select all lines you want to scan, including RF lines, power planes, and differential lines (extended, extended differential). You can select multiple lines and change the setup here. The far end crosstalk column gives a warning at 0.1 and a violation at 0.2, as does the near end.
Launch the simulation. Results: - Near end: Hide everything, display only lines. Colors indicate crosstalk values. No violations, but warnings indicate weak areas for crosstalk. - Far end: Same display. Some violations.
A violation doesn't necessarily mean crosstalk, but if S parameters show crosstalk, you'll know which section needs shielding.
