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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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