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I don't have the unit anymore, but it is definitely worth to try for thos, who have the same issue. Thanks!

Thanks for your valuable comment!

Only this is all to fix, really???

Use X1 mode for probe with 20Mhz BW limit or "probe to BNC" adaptor for connection, it's not issue, it's sensevity to noise.

A little tab to grab to remove the protective film from the screen.

As a workaround try slope triggering

@@drdfx159 I did it but with no success. Thanks anyway.

My D10 is stable down to about 150mV 220210.00 firmware 3204. You can always hit the run/stop to steady up the trace. ... that fixes it. :-)

Also.. is your probe set to x10?.... that will make a 100mV jitter floor appear as a 1V jitter floor

@@mal6232 probe at x1, still not triggering with the latest firmware update dso3kb_20220517 they sent me today. The DSO2D15 is just a toy for hobbysts, Hantek's after sale is a joke and offensive for the customer who has issue with one of their product. Buying this oscilloscope was more than frustrating. It will be more than a month since the Hantek after sale goes on with firmware updates that do not solve the situation of this machine at all. I would never have imagined such a poor product, I definitely do not recommend it to anyone and rather invest in a Rigol, Tektronix and other brands that have been in the field for more than thirty years, not these chinoiseries.

Totally agree. That's why I finally decided to get rid of the scope. I have an old analog Philips, it is huge and therefore I don't use it too often, but for the rare occasions I need a scope it is enough. And when I decide to get a smaller one, I'll definitely go for a better brand that has proven its reliability already.

As others mentioned before: you can try slope triggering, it indeed is much more stable, however when your signal changes it is more complicated to reconfigure the triggering levels. I have contacted Hantek support, and after a few mails back and forth they sent me a custom firmware that seemed to help a lot. The waveform was still not 100% stable, it moved back and forth very little, more like a kind of flickering, but it was much better. I still ended up selling my unit, as I wasn't completely happy with this "flickering", plus the FFT capabilities did not convince me either. In addition the green and yellow colors for the two channels were for me almost undistinguishable. All in all I was quite disappointed with this purchase. Other Hantek devices might be better, but I doubt I will try any of them, I rather save some more money and buy some real stuff, like Siglent or Keysight or something similar.

I have found some problems with picking up smaller signals that ought to work. I have some extra money now, so I think I'll look for a better unit. Save this one for testing first, as I have little experience with oscilloscopes. If I did everything correctly, a first and very basic experiment on Mr Carlsons Lab Patreon account was a no-go. ​@@drdfx159

I ended up selling it, so for me it wasn't worth. I think there are better options, if a bit more expensive, and perhaps lacking some features (mostly the signal generator), but they are more stable. Depends on what you need: if you will work with signal levels above 1V peak-to-peak, and perhaps frequencies higher than 1kHz, then it might suit you, especially if you absolutely need the builtin generator function. Otherwise there are better options I think. Oh and one more drawback: the two channels are marked with green and yellow, I could barely see the difference between them on the screen, so if you need to constantly compare waveforms, then maybe this unit is again not the best.

avoid to buy it, listen to me...

@@OLDSCHOOLNEVERDIES so what to pick in similar price?

@@eme444 if you want reliability, you have to invest money in a name brand --- chinese stuff left to be desired and it's unreliable

Thanks for the info. I figured out too that slope triggering gives a more stable waveform. In the mean time I got a new update from Hantek, installed it, and appparently it solved my issue. More or less... Sometimes it still flickers, but adjusting on the volts/div knob back and forth solves this. On the other hand slope triggering is unuseable now :D Honestly, I start to give it up. I keep my scope till I find something better (Siglent, Tektronix, Rigol maybe) for a reasonable price used, but then I think it will go.

Thanks, indeed, slope triggering works much more stable, however that is also much more inconvenient if you need adjustments in the triggering level (or levels in that case). I have emailed Hantek, initially they seemed to be willing to help, asked for more details and also this video, but for more than two weeks now I have not heard anything from them :(

Yep, known issue, trigger drops to 0 and you need to re adjust the trigger level. Mine does it too.

@@mattyb7736 Mine is now fixed. I got new software from Hantek that took care of the problem.

+SPEFS Sorry, just read your comment. unfortunately I have no idea what could be done. In this video you can hear quite some noise too that comes from the amp. Since it is not mine, but belongs toa friend of mine (he played the demo) I have no idea if this is normal... It certainly doe not come from the pedal as the same pedal is dead quiet on other amps and also other pedals produced this noise on the same amp (see my other video about the Marvel Drive clone)

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