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The graphics just to me didnt smooth out enough to be confident in knowing a clipped signal from a clean one. You SMD will be worth it though.
1khz test tone at 39 v or so doesn't clip. But looking at the graph it seems to show clipping.
Actually, it's pretty easy to see a clipped signal (the one in your pic isn't). A clipped signal will be a sine wave with obvious plateaus showing the "clipped" peaks. When setting the gain I'd get a very clearly clipped signal and then back it off until it's got defined peaks. The pic below is oversimplified but it's pretty obvious when you're clipping or not. Even with a very inexpensive o-scope.
Actually, it's pretty easy to see a clipped signal (the one in your pic isn't). A clipped signal will be a sine wave with obvious plateaus showing the "clipped" peaks. When setting the gain I'd get a very clearly clipped signal and then back it off until it's got defined peaks. The pic below is oversimplified but it's pretty obvious when you're clipping or not. Even with a very inexpensive o-scope.
Yes agreed, I meant with these cheaper o scopes, at least for me, the graphics display isnt very good. I never saw a wave that I thought was satisfactory enough one way or another to say it was showing clipping or not. Perhaps I just didnt have it set up right though. I just didnt trust it, so I just wound up setting my gains with a multimeter.
Yeah, that's pretty much it. I don't think this guy knows how to use a scope very well though but you get the idea. He wasn't seeing clipping on the older version except around 9:30 (a clipped signal is VERY obvious).
If you have a DD-1 then by all means use it if it will make you more confident. I don't have one and have never used one but I'd be surprised if it was more accurate than either of these scopes (would a DD-1 show the fuzziness that was indicating slight distortion?)
When I had better hearing I always used my ears and checked for accuracy with a scope (when I had access to one).
His second o scope wave looks just like what I was dealing with on my scope. I dont have the lumy, but one of the knock offs that looks very similar to his second one. The first one....original lumy I think? looks much better. Never a smooth line at any volts.
His second o scope wave looks just like what I was dealing with on my scope. I dont have the lumy, but one of the knock offs that looks very similar to his second one. The first one....original lumy I think? looks much better. Never a smooth line at any volts.
Understood but you're not necessarily looking for a smooth line when setting gains (although the much-improved display on the latest gen was nice). You really only need to be able to identify clipping vs. a normal sine wave. Pixelated or not they are easy to differentiate.
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