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recent experience shopping for hobby scope in today's market. tek, rigol, ...
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bdunham7:

--- Quote from: nctnico on February 27, 2023, 10:26:02 pm ---Problem is that 100us/div is not very interesting for checking a 1PPS signal (which should be rather obvious...). Things get interesting for me at 200ps/div (or less).

--- End quote ---

100µS is just the first step of two.  As I stated and showed, you can expand that to 1ns/div, which is the fastest available for this model.  If you want to look at 1pps at 200ps/div with any sort of BW and time accuracy that makes that worthwhile, you need a much faster scope with a much better clock.  But there is no software or other limitation with Siglent keeping you from using whatever capabilities the scope has to full advantage and you aren't limited by record length.

SDS1104X-E is the same story.  You can have up to a 10 second trigger delay with full sampling speed (that's 1000X the record length for delay) and fastest timebase available.  It isn't as convenient and you do have to twiddle knobs and the time display only goes to 6 digits and so on, but there it is.




bdunham7:

--- Quote from: tautech on February 27, 2023, 10:19:04 pm ---Yup, that's what deep memory is all about.  :-+
Simple ain't it.

--- End quote ---

Well, to be accurate, it isn't based on deep memory although it helps in the acquisition end.  The available delay is 1000X as long as the record length.  Now I'm wondering about the interval trigger. 
tautech:

--- Quote from: bdunham7 on February 27, 2023, 10:44:58 pm ---
--- Quote from: tautech on February 27, 2023, 10:19:04 pm ---Yup, that's what deep memory is all about.  :-+
Simple ain't it.

--- End quote ---

Well, to be accurate, it isn't based on deep memory although it helps in the acquisition end.  The available delay is 1000X as long as the record length.  Now I'm wondering about the interval trigger.

--- End quote ---
;D
You'll be a while exploring all the features even the little X-E has.
Here's one I did years back using the Search and Trigger features:
https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1370717/#msg1370717

An old saying comes to mind....there's more than one way to skin a cat < whoever would want to, maybe only Mr Jones.
David Hess:
The Siglent manual is very specific.  Is it wrong?  On page 37:

When changing the horizontal delay, the delay time displayed in the information
bar at the top of the screen changes in real time, indicating the distance between
the time reference point and the trigger point. The amount of delay range available
depends on the time/div selected and memory depth.
bdunham7:

--- Quote from: David Hess on February 28, 2023, 12:09:39 am ---The Siglent manual is very specific.  Is it wrong?  On page 37:

When changing the horizontal delay, the delay time displayed in the information
bar at the top of the screen changes in real time, indicating the distance between
the time reference point and the trigger point. The amount of delay range available
depends on the time/div selected and memory depth.

--- End quote ---

That statement appears to be technically correct in that the available settings 'depend' on the other parameters, but the inference that the scope can only work by continuously recording samples from the trigger point to the end of the selected delay clearly appears to be wrong unless there is a lot of extra memory in there.  The scopes apparently do have more memory than the bare minumum suggested by their specs, but I doubt it is enough to cover the length of time and sampling rates shown in the example I posted.  I was unaware that my Siglent scopes had that ability until today--I've never had reason to dial in that much delay and like you, I would have assumed I could only push the trigger point off the left of the screen by one record length.  It never occurred to me that I could push it out by a full hour!

Edit:  On the SDS2104X+, the maximum trigger delay is 10Ms, or about 115 days.  The acquisition would be 1ks/div, or about 3 hours per screen at 20kSa/s.  It does say "Slow Acquisition" on the screen.... :)

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