Hi,
I’m using a few different free software packages to use my PC as oscilloscope and spectrum analyzer, like Visual Analyzer (2024 version) and SoundCard Scope (V1.47). My PC uses W10 64-bit and a Steinberg UR242 external USB sound adapter. Input is for example from a low distortion 1 kHz. generator (Victor).
This works quite good in general with high dynamic range and low noise. Synchonization is fine too.
But sometimes the waveform (scope and spectrum) shifts a bit up and down, every few seconds a little bit. The software itself is stable of course. Mains voltage is stable too. All drivers are set to latest, firmware of the UR242 as well.
What can cause the waveform to go up and down a little bit in it’s window?
Regards, Gerrit
I’m using a few different free software packages to use my PC as oscilloscope and spectrum analyzer, like Visual Analyzer (2024 version) and SoundCard Scope (V1.47). My PC uses W10 64-bit and a Steinberg UR242 external USB sound adapter. Input is for example from a low distortion 1 kHz. generator (Victor).
This works quite good in general with high dynamic range and low noise. Synchonization is fine too.
But sometimes the waveform (scope and spectrum) shifts a bit up and down, every few seconds a little bit. The software itself is stable of course. Mains voltage is stable too. All drivers are set to latest, firmware of the UR242 as well.
What can cause the waveform to go up and down a little bit in it’s window?
Regards, Gerrit
Under no threat or circumstances whatsoever do not tell whether the shift happens in amplitude or frequency axis. 🙂
A short video showing what you're talking about would be helpful.
An FFT can bounce if your circuit has some 1/f noise present. A scope display bounces if the trigger isn't set up properly.
Tom
An FFT can bounce if your circuit has some 1/f noise present. A scope display bounces if the trigger isn't set up properly.
Tom
OK, I will try another PC (laptop) tomorrow and if the problem persists, I will make a video.
Regards, Gerrit
Regards, Gerrit
Well, it's more that the canvas itself (on which the waveform is displayed) is moving / shifting somewhat. Perhaps a video will show this better.
I may also try a simple oscilloscope device for comparison.
Regards, Gerrit
Hi gerrittube,
Please note that this may not be true since any software is updated with subsequent versions that fix bugs of all kinds.
A test that I would do at zero cost is to uninstall, restart your PC and then reinstall your program(s).
If nothing changes, but we still can't know right now, I would try installing an older version (1.46) of the software.
https://www.zeitnitz.eu/Scope_en
Hi Ulogin,
What I meant is that the windows were stable on my desktop and as far as I can see I get no errors from the software.
I removed all extra software that came with the Steinberg UR242. Now it seems a lot better.
I had another annoying event with W10, the line input level allways dropped back to 0 (zero) after a reboot or setup change. This turned out to be a well know issue and I think I have this solved now as well.
Regards, Gerrit
What I meant is that the windows were stable on my desktop and as far as I can see I get no errors from the software.
I removed all extra software that came with the Steinberg UR242. Now it seems a lot better.
I had another annoying event with W10, the line input level allways dropped back to 0 (zero) after a reboot or setup change. This turned out to be a well know issue and I think I have this solved now as well.
Regards, Gerrit
I have tested (as potential replacement to my E-MU 0202) UR22C - that was stable. But I do not like it - too many volume regulators in the signal path, quite difficult to find optimum set of Windows audio and UR regulator settings.
It's probably a Windows setting doing a refresh.
Hold 'ALT' and click on 'This PC' and then click on Advanced System Settings, then make sure you have selected "adjust for best performance" .
Hold 'ALT' and click on 'This PC' and then click on Advanced System Settings, then make sure you have selected "adjust for best performance" .