Products > Test Equipment
Oscilloscope Zoom Out Quirk
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Elasia:

--- Quote from: nctnico on June 16, 2020, 12:42:11 am ---Great spirits have always encountered violent opposition from mediocre minds.  >:D

--- End quote ---

Story of my life... i swear i spend more time just stirring up hornet nests lol

but noooo we cant do xyz! ... bullshit  :horse:  :horse:  :horse:   :-DD
jemangedeslolos:

--- Quote from: tv84 on June 15, 2020, 06:29:45 pm ---
--- Quote from: jemangedeslolos on June 15, 2020, 06:09:07 pm ---It would be great if nctnico could show us a case that we can solve with a GW Instek or an R&S and that we cannot with a Siglent or a Lecroy or with or with more steps or less efficiency.

--- End quote ---

That is another matter and goes deeply into each other's way of using a scope. Based on all the information in this forum it's perfectly clear that it will never be a consensus in the way people use a so generic instrument as a scope is. And, specially, people with lots of experience and accustomed to use it in a certain way.

Of course, it's not only about the people's way but also the type of signal analysis and/or glitches that are being searched that influence the best way to handle the scope.

If Siglent corrects this "quirk" i'm sure it will not be only nctnico that will be happy  :). That will benefit even the current Siglent advocates! And some/many of them have yet to understand that benefit.

--- End quote ---

Yes it's true that it's a bit off topic, but Dave's video shows that a problem discussed here in tens of threads for several years can be summed up in a single video.

I understood ( I hope... ) the test nctnico wants to make to show that the automatic management on the Siglent doesn't allows (for example) to look at a high bitrate packet in both the top zoomed window and the bottom window AND then look at another position WITHOUT having to recapture.
This is an example he found, I think, to make it clear that the use of the zoom function on the Siglent doesn't completely resolve the lack of manual memory management.

Now we are approaching 20 pages with some misunderstandings that still persist.

All this blabla to say that until we haven't some sort of standart test plan / benchmark to see how different oscilloscopes work with exactly the same settings and signals,  I still think that a screenshot or a small video or a gif can be much more explicit than dozens replies more or less well written with more or less diplomacy  ;D


tautech:

--- Quote from: jemangedeslolos on June 16, 2020, 10:13:59 am ---show that the automatic management on the Siglent doesn't allows (for example) to look at a high bitrate packet in both the top zoomed window and the bottom window AND then look at another position WITHOUT having to recapture.

--- End quote ---
Yet they do that without fault !
All the primary timebase record can be panned through from within the zoomed window.
And Navigate to any time position in the capture too.

An example of the required setup posted in another thread:
Gandalf_Sr:

--- Quote from: Tautech ---Yet [Siglent scopes] do that without fault !

--- End quote ---

Huh! I thought the simple conclusion that Dave came to was that Siglent scopes don't give users the option to manually make some of the vast amount of memory available to enable the ability to zoom out - furthermore Tautech actually told us that Siglent were working on the problem - or did I miss something?

Here we go again, the Siglent dealer chiming in to try to convert us non-believers that Siglent already does what we need, we just have to drink more Koolaid and watch while Tautech walks across water without sinking deeper than his ankles.

FFS, can't we just give it a break?  As jemangedeslolos says, Dave has summed everything up in a simple video.

 :horse:
jemangedeslolos:

--- Quote from: tautech on June 16, 2020, 11:37:18 am ---Yet they do that without fault !
All the primary timebase record can be panned through from within the zoomed window.
And Navigate to any time position in the capture too.

An example of the required setup posted in another thread:


--- End quote ---

I know my english is bad but if you try to decrypt, it is not quite exactly what ntcnico suggests.
You can only see beautiful colors on the top window but you cannot compare this signal with the signal zoomed in the bottom window.
The "dual time base" thing on analog scope that ntcnico is trying to explain.
If you choose very close timebase, you will see the problem.
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