Shown where? KS with Hi-res will have that ENOB until what frequency? Please show data and references.
What do you mean it can draw and Eye diagram on SPI bus ?? how ?
I know my 3000T can do mask testing of an eye on FlexRay and CAN by using special scripts. And those are basically using mask test with a trick. Useful though, better than nothing.
But first Infiniivision scope that has Eye diagrams is 6000 series..
As I also explained before, and again you. You not caring is not same as nobody cares.
Anyway, Happy new year everyone, and just accept that some people will have different opinions.
I'm not going to spend hours googling around for you, so you can pick some irrelevant characteristics like "this scope has 4 math channel therefore it's better". Even though the only reason to have 4 math channels is to post pictures online to brag about 4 math channels.
BTW you do eye diagrams by turning on persistence. Since we have been doing it since the 90s, but I guess if it's not in the scope it's impossible to do a measurement.
I'm not interested in continuing this conversation with you. As I said, my opinion is that the scope is too expensive for what it is, and I don't need to justify it to you or anyone else. And actually siglent has the means to fix that, since it is 50% more expensive than in other markets, but they are happy with the pricing.
I genuinely don't want to argue with you. You are very knowledgeable and intelligent person. Many things you post are very smart and useful.
But sometimes you just post a blurb of some unconnected data without explanation and declare how that is all the truth for everybody in universe and then double down anybody that contradicts you is idiot. I presume that you have quite some experience, thought process and time in those statements and you probably simply did not want to write whole thing, just results....
Example of confusing parts:
"And maybe what you are writing is true, but at least that scope will be able to draw an eye diagram for a SPI bus" stated for old Keysight scope..
Reading that it seems that scope has some built in capability to do eye diagrams and the other ones mentioned cannot.
Then you say (in patronizing tone) that I'm clueless how it is been done for years and that all you need is persistence mode..
First, even old DS1000Z has persistence mode. So literally any scope can do that including Siglent you are throwing mud at.
And, no, that is not "proper" eye diagram. Because you don't have clock recovery and no measurements for it.
You need 2x clock and alternating trigger to get proper eye diagram.
If you use SPI clock you will get something that looks alike but left edge will be aligned to trigger point.
Oh actually, on Siglent mentioned you can enable histograms and extract some usable data from that "makeshift eye".
And yes I certainly used this technique occasionally to get idea what is going on.
But "eye diagram" it is not.
Also, your ego is enormous. If you don't use math channels, or don't know what are they used for, because in your line of work you don't need them, that rule applies only to you. Not the rest of the universe.
I use math channels all the time. From FFT, to multiplying 2 channels to get power, to scaling sensor data etc etc.
On Picoscope I wrote math channel that was decoding decoder position, stepping of stepper etc..... One stuff I still miss on Siglent is digital channels as math source...
So yes, if you make outlandish statements it is your burden to prove them. Or we call bullshit and ignore it..
That is just the way it is. I have data to prove my point, where is your data?
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