Hi I thought I'd show you uh, a quick little um trap for young players. really with the uh high resolution mode that uh, you get in a lot of uh, modern Scopes like this. in this case, it's the Agilant Infin Vision 3000x series. Now the high resolution mode.

If you actually go into acquire down here, it's got normal mode P detect averaging and high resolution. Now the high resolution mode actually does, um, some high order uh, average in um, uh of the bits and to actually give you a lower uh noise flow and it can really work out quite well and I might Show an example of that. but I just thought that I'd Show An example here of uh, how it can be a little trap unless you, um at if you've got high frequency noise uh, superimposed on a low frequency signal that you're looking at. Now in this case, I've got a couple of signals here which I'm catching.

They're very slow 100 milliseconds per division in there, right? So a relatively slow change in Signal which we're going to single shot, uh, capture. So let me singleshot capture that and bang. Okay, and it looks. these both of these curves look quite smooth and nice.

Okay, but when you zoom in, look at that. see only when you zoom in can you see that, um, that noise on the signals like that. But when you zoom out like that, you don't actually see it. It looks smooth as a baby's butt.

But if you turn off uh, high res mode and you go into normal mode, Let's capture that same signal again, shall we? and Bang! You can see the noise at the Uh at the slowest time base like that and it's exactly the same when you zoom in. So if you are using high resolution mode, just be careful at these expanded time bases that it's not averaging some high frequency noise like that. Now I'll show you an example of Uh where the high-res mode uh can be useful and clean up your signal just measuring uh, the DC output of a 5V um sorry a 1V power supply here. So we've got a volt output there and uh, it's the line is a bit thick and fuzzy regardless of what the time base.

10 nond per Division 10 micros per division and that's because the uh, you know a wide bandwidth scope like this one. This one's a 500 MHz uh bandwidth scope. so it's going to be relatively noisy like that. But if you go into the Uh acquire menu and you choose the high resolution mode bang, look, it's clean that up very significantly.

And if at the lower time bases, if you go up to the higher time bases, of course it's still thick like that. but at the lower time basis, it really averages out that high frequency noise as opposed to average mode which is a bit different. It's uh, it works differently and I won't explain that, but high resolution mode can be quite uh neat and you can get uh, much greater vertical resolution or improved vertical resolution on your scope effectively. Um, compared to normal mode.

So there you go. that's high resolution mode and it's available not only on this scope, but uh, a lot of uh, modern Scopes out there, so have a play around with it. But just be careful.