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Trying to display bandwith via Math on Siglent SDS2k+/2kHD/800X HD

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Martin72:

--- Quote ---Please don't accept release notes word for word.
--- End quote ---

Nothing has changed except the displaying version number of the firmware.. ;)
Did this upgrade at last in the hope, the stupid axis-labeling was corrected, but it wasn´t.

Martin
edit pic attached.

hpw:
So run now the R12 FW and did get some nice plots... sometimes the Config/Full Span or Peak To Center has to be clicked again....

do not understand why the center is at 5GHz...


hp

Martin72:
Edit: Threadtitle changed.


--- Quote from: Performa01 on May 17, 2022, 09:08:51 am ---Here’s a demonstration what the SDS2504X HD looks like with a moderate ~500ps risetime pulse coming from the SDG7102A. 32x averaging before up-sampling.

--- End quote ---

Hi.....
In the meantime I also own a SDS2504XHD and remembered this thread.
So I wanted to recreate Performa01 measurement, this is what I get(see picture).
Am I doing something wrong ?
Looks not so linear for now, also my bandwidth is far from the 500Mhz.
I took the interpolation from rf-loop (20, Dx 4) and like Performa set the FFT to AVG 32.
Same time base.
Is it possibly the signal from the bodnarpulser ? Is it "too steep" ? Performa01 and rf-loop did not use it for their measurements.
Additionally a picture of the risetime of the pulse.
If you use the formula, this is also not 500Mhz.

gf:

--- Quote from: Martin72 on July 20, 2023, 09:48:38 pm ---Is it "too steep"

--- End quote ---

It certainly is too steep for 2GSa/s. The key to benefit from fractional sample trigger points and to obtain "RIS-like" sampling seems to be Averaging acquisition mode:


--- Quote from: Performa01 on May 17, 2022, 09:08:51 am ---Here’s a demonstration what the SDS2504X HD looks like with a moderate ~500ps risetime pulse coming from the SDG7102A. 32x averaging before up-sampling.

--- End quote ---

I think you did not turn it on, did you?

Martin72:
Thankyou gf!
In fact, I overlooked it, or thought that it was the averaging of the fft.
Now the situation looks completely different...


edit forget the second marker...

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