Problem with Noise Analysis

QSPICE
1

I am a newbie, so I am possibly missing something absolutely obvious, but I am not able to get any valid chart output from noise analysis. I also just made a test replicating a very simple, working schematic from another post: noise analysis is working and gives the same integrated results correct results as in the other post, but all I get is an empty chart. The same with my schematics and also with another working schematic from another post, so it seems a general usage or configuration problem more than a schematic issue.

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Qspice80 version is Apr 18 2026 11:48:13.
Qpost versio Apr 13 2026 09:21:13.

Thank you in advance for any help

2

Did you move your cursor back to schematic to probe a net for voltage or device for current?

Waveform viewer default is blank if you don’t have .plot command or without .pfg file.

1 Like
3

Thank you, it was really a newbie question, sorry to have disturbed you!
Thank again
Giorgio