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Oscilloscope Zoom Out Quirk

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tautech:

--- Quote from: EEVblog on October 20, 2022, 09:26:33 am ---
--- Quote from: tautech on October 20, 2022, 08:21:53 am ---Memory management and its options/guises are a recently added feature to SDS5000X in the FW version V0.9.7R2 before last.
It was developed in SDS2000X HD and SDS6000A.

--- End quote ---

So still not available on the 2000X?

--- End quote ---
SDS2000X has been phased out. But no,the new Memory management featureset has not been implemented in SDS2000X Plus and TBH I'm not sure that it can be. However I'd imagine Siglent wish to maintain a point of difference between it and the 12 bit SDS2000X HD.

Dave, you have a KS3000 in the lab right ? With the feeble memory depth they have how far can they zoom out on a capture from say 1ns vs your SDS5104X in Fixed memory mode ?

Martin72:
Checked once the zoom out on the 2K HD:

https://www.eevblog.com/forum/testgear/siglent-sds2000x-hd-12bit-(published-for-chinese-domestic-market-only)/msg4291393/#msg4291393

Fgrir:

--- Quote from: tautech on October 20, 2022, 07:34:14 pm ---Dave, you have a KS3000 in the lab right ? With the feeble memory depth they have how far can they zoom out on a capture from say 1ns vs your SDS5104X in Fixed memory mode ?

--- End quote ---
Using my MSO-X 3024A, acquired at 2ns/div which is as high as it would go.  Pressed Stop and zoomed out until I could see the ends of the data.  Looks like it uses 2Mpoints for zoom out in this case.

EDIT:
Tried again using Single trigger mode instead of Stop and it had twice as much data, so 4Mpoints. Not going to upload another picture so you'll have to take my word.

tautech:

--- Quote from: Martin72 on October 20, 2022, 09:37:31 pm ---Checked once the zoom out on the 2K HD:

https://www.eevblog.com/forum/testgear/siglent-sds2000x-hd-12bit-(published-for-chinese-domestic-market-only)/msg4291393/#msg4291393

--- End quote ---
Yeah, nah.
With a fast timebase setting and only in Fixed mem mode how far (timebase steps) can you actually zoom out before the capture won't fill the display ?

rf-loop:
My opinion is that right way to test it is:

Set trigger mode to Normal trig. Not Auto or Single.
Don't use Stop button. When normal acquisition is running just remove signal so it cannot trig anymore and cannot do new extra last acquisition with possible more memory (HPAK).
After then stop and zoom out.

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