seems like the Siglent-dealer parse this entire board,
and whenever the single magic word 'Siglent' is spoken,
they are on board and enlighten you...
@rf-loop takes the new SDG1060X (X suffix!!!) worth 500€
and compares it to 85€ FY6660 - makes it sense?
OK, Square has nearly no jitter, other Waves have ~7ns ,
Feeltech has 4ns and this is less, or not?
So @SMB784 is right, this is 'entirely better'
And all the allready sold old Siglent 800 or 1000 without 'X'
and Rigols and so on with 100 or 150 MSa/s
are worser than Feeltech with 250 MSa/s.
This is exactly what @SMB784 said.
This is what Siglent says:
edit, image added
Square wave. My comment was, as I underlined in my answer just for Squarewave. Because this was told is as good as in Siglent or far better. And this was false. (exewpt some ancient many years old models)
And then I also told that pulse also have this low jitter. (wjat jitters are not even specified in FY information.
Also, if you have read, I tell that Triangle and Arb have more jitter, 6.7ns vs 4ns in FY6600. Of course this one clock jitter (what is only part of total jitter) in FY6600 is better due to higher samplerate. (if Arb is important). In my world, most important is Sine, Square and pulse functions signal quality. (including pulse width fine adjustmet and rise and fall times adjustment with low jitter.)
btw, it was not SDS1062X. How you think so? There on front panel read 1032X. Price 339 EUR. Worth for every cent. Also it have CE cerified (and in this case it is not only manufacturer own promise, it is fully inspected in independent accredited laboratory with full documents what is base for CE certification, what makes it possible for EU area markets. It is also safety question.
FY6600 have not passed any this kind of inspections as far as I know. It is only lazy customes officers these can flow inside EU area.
This is also (just one) reason why there is not any company in EU who sell these to end users.
I have not told that FY6600 is total crap junk and not worth for its price in low end hobby use /if user take full care about electric safety) but, wrong claim is wrong claim and they are good to correct. And it was about square wave jitter. NNC