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Rigol MSO 5000 hardware/software revisions

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Cerebus:
Luck!

thmjpr:
Here is my early stage Bode plot software: https://gitlab.com/thmjpr/mso5000-gui
I based it off of a post from timber23 here: https://www.eevblog.com/forum/testgear/new-rigol-16-bit-function-generators-dg800900-series/msg2425551/#msg2425551

Still need to add: relative plots, dB units mode, csv output, TCPIP/USB selection, etc.
May require some knowledge of python to run, the SCPI IP is hardcoded currently. But can easily run on windows on Pycharm.

Attached is example plot from buffer board (opamp THS3201).
Input: blue, 1Vpp
Output: green, 2Vpp

Internal generator seems to drop off at about 15MHz.


thmjpr:
One interesting finding, the bandwidth seems to vary depending on selected vertical scale:
- 100mV and 200mV/div have higher amplitude at > 400MHz, -3dB only hits at ~640MHz, but its bumpy
- 50mV, 0.5V/div, etc. have amplitude drop off as we've seen in other threads at ~450MHz

I don't know if this is peaking in the filter design, or some different filter is selected in software, etc. I would say its a problem with my source, but, its too consistent, it should have peaking at all vertical scales not just some.

Range is 250-650MHz, 100mV/div, 0.5Vin:

nctnico:

--- Quote from: thmjpr on March 08, 2020, 05:41:01 am ---One interesting finding, the bandwidth seems to vary depending on selected vertical scale:
- 100mV and 200mV/div have higher amplitude at > 400MHz, -3dB only hits at ~640MHz, but its bumpy
- 50mV, 0.5V/div, etc. have amplitude drop off as we've seen in other threads at ~450MHz

--- End quote ---
For the lower ranges the signal needs to be amplified in the osciloscope's front-end. It is very normal for a DSO to show different frequency versus amplitude graphs although the DSO should meet the minimum bandwidths. When I do a DSO review I measure the bandwidth at a low v/div value and a medium v/div value.

skander36:

--- Quote from: thmjpr on March 08, 2020, 04:23:11 am ---Here is my early stage Bode plot software: https://gitlab.com/thmjpr/mso5000-gui
I based it off of a post from timber23 here: https://www.eevblog.com/forum/testgear/new-rigol-16-bit-function-generators-dg800900-series/msg2425551/#msg2425551


(Attachment Link)

--- End quote ---

Thank you for your work .  :clap:
I was able to run it .
Setup for PyCharm was a mess because I have already VS Code installed .
I think is good to add on line 123 - self.buttonStart.setEnabled(True) to be able to restart without close/open the application.
Waiting for another version to test , when you will have time to work on it.

Thank you !

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