DO not get me wrong, I do not have any knowledge about modern Keysight scopes because my customers do not buy them anymore and for sure I'm not going to buy them too and I never said you are lying, but Keysight scopes are out of topic and remaining concepts explained in David's video are adhering with reality.
Instead I was meaning another thing : it's not easy to put concepts in video and here all must agree that David makes a great job in that, so I have respect for his job.
The problem here is another : Siglent supporters still try to convert a lack in a plus and the proof is that this very feature is appearing in more expensive scopes, this is the simple and plain truth, no way to negate it.
And you should not get me wrong either. I don't disagree that you and many others use specific workflow that needs that particular feature.
But what you are (an those that say it absolutely necessary or scope is useless) is forgetting is that literally millions of users don't need it and have scopes that don't have that capability. They simply use it differently. They use zoom function, that is working very well on these scopes with big screen (LeCroys, touch Siglents, Picoscope I have on a 24" screen)..
Also there are literally millions of users of scopes (that do have manual control of memory) that never ever took it out of Auto memory mode because for everyday "scoping" that is most useful mode... It prevents aliasing (and confusion connected to that) and also gives the simplicity of putting on a screen whole event you want to capture and using zoom to zoom in. Or simplicity of capturing whole event with timebase, stopping and then using timebase time and position to observe part of the signal in question, same as with scope with manual memory control....
So for people that absolutely insist they need manual memory mode because they refuse to use scope differently from what they like or have long time habits, then they should get a scope with manual memory mode.
I personally, for instance, would never buy a scope that has ONLY manual memory mode because they are pain in everyday use...
I understand personal choice.... But make no mistake, this heated discussion is about personal choice and willingness to learn new/different ways.. Not about "this cannot be done with this scope because it lacks XYZ". Because it was demonstrated many times it can be done but with slightly different steps.
And as for the "problem": Like I said. Siglent is a company the sells scopes to customers. Fact that most of their scopes have no manual memory mode is from the fact nobody ever made that to be a problem. If they had even 1000 users from millions of sold scopes complaining about this in the past, they would probably have that as a feature. Until this overblown campaign of making this to be a problem much larger than it deserves nobody cared about this.
If you want to judge who is "unfair" or "playing marketing bulshit" take a hard look at who are the loudest portparols of this invented "problem": a guy who simply likes to discuss things he doesn't have or ever tried, but thrives in creating fuss, a guy that has publicly stated hundreds of time he has open grudge with Siglent, some people who are openly Rigol fanboys... Sounds like innocent people are fighting "Siglent's invasion". Instead of some people responding with facts to a smearing campaign that appeared out of blue in the very moment when Rigol's MSO5000 was being creamed by sales of SDS2000X+ and all of Rigol MSO5000 shortcomings were out in open.... You are saying "it is shame there are no Rigol people here to say their side..". Are you sure about that? Or it is that Siglent is honorable enough to openly state their status and not relying on "agents provocateurs".. There is Siglent official account here, a person selling Siglent and several of Beta test team members. They are all known and not pretending to be otherwise.
Ruminate on that. I'm trying to give you background on these because I see you are a new member and seem to be rational person that listen to the facts...
To make sure, I will not discuss this anymore here. This was a very nice topic (so far) on a new potentially exciting scope from Rigol and it is not "Siglent people" that are trying to derail it...
Let's keep it nice topic on Rigol HDO/DHO scopes..