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Rigol MSO5000 HiRes mode

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Anding:

--- Quote from: Martin72 on October 31, 2022, 12:10:21 pm ---They´re like raw diamonds needed to polish (MSO5000 in my example), this is something I´ve written all the time.. ;)

--- End quote ---

I guess the residents with the technical skills do to it have already upgraded from their MSO5000s, but to prepare a well-written technical 'white paper' of observations, ideas and recommendations and send it to their HQ in China.  For sure there will be well-qualified staff there able to read it.

Does the HDO1000 look better polished at first impressions?

Fungus:
Maybe there's only one team and as soon as a piece of hardware is released they all get moved on to the next one. No sitting around and fiddling with the existing one.


--- Quote from: Anding on October 31, 2022, 01:41:39 pm ---Does the HDO1000 look better polished at first impressions?

--- End quote ---

I haven't seen a full review of it yet but I saw a few things that looked very polished in Dave's video of the HDO4000 and the manuals for the HDO1000 and HDO4000 show mostly the same functionality.

2N3055:

--- Quote from: Fungus on October 31, 2022, 11:39:11 am ---The weird thing is their colormap mode works great.



You'd think they could do hires mode similarly - apply the channel's color instead of a color gradient and allow the user to dial a threshold value to discard the low intensity pixels.

--- End quote ---

One cannot just discard low intensity signal (in this case low repetition rate values) and call it a day. Making trace artificially thinner by discarding pixels at random is not how it works.
Or should I say it would if scope would be like CRT, lookie at the wiggles. Signal has to be processed in mathematically correct and documented way so what is left is usable for further measurements.

I'm not sure if that color grading is great either, I can't see sensitivity settings. On really low noise scopes, on clean sinusoidal signals, line is one pixel thin. Actually if you enable color grading, you only single color most of the time. You actually see some gradients only when signal is unstable or noisy.

Fungus:

--- Quote from: 2N3055 on October 31, 2022, 02:14:54 pm ---One cannot just discard low intensity signal (in this case low repetition rate values) and call it a day.

--- End quote ---

Sure you can.

Analog 'scopes do it all the time.

2N3055:

--- Quote from: Fungus on October 31, 2022, 02:54:51 pm ---
--- Quote from: 2N3055 on October 31, 2022, 02:14:54 pm ---One cannot just discard low intensity signal (in this case low repetition rate values) and call it a day.

--- End quote ---

Sure you can.

Analog 'scopes do it all the time.

--- End quote ---

Sure you can. You can do whatever you want. It doesn't make it right.
I'm happy Rigol knows better. Now this scope has some noise. But is generally made to the rules of the trade. They don't cheat or destroy data.

It is irrelevant what CRT scopes do. CRT scopes don't hide anything. They behave up to strict rules of phosphor persistence and sensitivity of phosphorus used in screen, combined with tube characteristics and signals applied. It is very mathematically pure and predictable.. There are long persistence CRTs that will show same thing as good DSO with same persistence length. But they are annoying for general use.

Digital scopes have measurements, FFT, and people use them as acquisition hardware where they capture signal and then analyse it later on PC.
They abide by different rules to CRT scopes. They are based on different principles and have to abide by them to be proper measurement machines.

Otherwise we have scope art. Nice to look at, but useless for anything more that just confirming there is some changing signal at the place we stuck the probe.


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