The RTB2K with History(ext mem) has 160 x 4(320 x 2) Mpts. Not sure about siglent but you get the same memory for logic also but that's not really 1:1. The RTM has something like 200 x 4Mpts.
Okay, I've overlooked the additional memory that comes with the Segmented Memory option. To be honest I didn't expect an A-brand to be so generous, but then again, R&S seems to be different
You can say they're conservative but the datasheet says what it says.
I have measured the actual channel isolation at 580MHz on my pre-production unit and the worst case scenario was from Ch.3 (FS) to Ch.4, both at 5mV/div, resulting in -53dB crosstalk. In all other cases, the isolation was significantly higher:
Ch.1 (5mV/div – 1V/div, FS) to Ch.4, isolation 79-90dB
Ch.2 (5mV/div – 1V/div, FS) to Ch.4, isolation 64-108dB
Ch.3 (5mV/div – 1V/div, FS) to Ch.4, isolation 53-88dB
Actually thinking about segmented memory reminded me... The Siglent was something like 2us and the RTM is 200ns between acqs, that's pretty significant.
Yes it is. BTW, actually measured lowest re-arm time between acquistions was 1.49µs for the SDS5104X.
Generally, the SDS5000X cannot be both cheaper
and better than all the competition and in every regard. While its waveform update rate might not be particularly fast, I’m positive the functionality of the SDS5000X will look rather good once it’s feature-complete.
Why do they call the AWG option "built-in" in the header/title of that section, when it seems to actually be an external device, just being controlled by the scope software (like 2000X-E, which has "module" in the corresponding title)?
That’s just a copy & paste error. There have been several such occurrences in the datasheet, most of them got corrected, but the Header on page 7 has been overlooked…
Those who think the SAG1021 + SW Option is not very attractive, you are not alone. To be honest, I don’t understand the whole idea of a built-in (or external USB powered brick) AWG. On a small portable service oscilloscope okay, where the tech doesn’t want to carry more items than absolutely necessary. But on a lab instrument, especially one that is not intended for the hobbyist market?
If I were in that situation, I would of course get something more versatile and powerful instead, like the SDG1032X (or above, especially for a 1GHz scope), without a second thought.
A complete review of the SAG1021 (well, at least the HW and what’s accessible through the scope UI) can be found in this thread, replies #48/49:
https://www.eevblog.com/forum/testgear/siglent-sds1104x-e-in-depth-review/msg1432665/#msg1432665