- Use symprobe to view waveforms from ngspice output raw files. Launch from Electric toolbar wave button, or a terminal.
- Use File menu to open additional windows for additional raw files (i.e. other corners).
- Drag-n-drop selected traces between symprobe windows, to show results from multiple separate corners on one plot.
- see also: Save/reuse traces & calculations
1. After simulation, ensure that it did not fail by checking the log file(s). To view waveform, click on the wave button.
![symp1.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/IMSVGJgatugLVLaN.png)
2.This opens Symprobe. To add waveforms, Trace -> Add.
Note: For an AC-Analysis, the Trace menu offers an easy way to plot Phase, Magnitude, and db20; that also become usable in other calculations.
![Symp2.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/qBgkkrcebeXskyDm.png)
3. Select the signals to be plotted. You can also write equations to display (Eval Goal Function).
![Symp3.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/qVEuiXSBXfiLlNva.png)
4. View the behavior of your circuit simulation and verify the functionality
![Symp4.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/AzTRNPKgWCjjlEyU.png)