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OWON VDS1022I Quick Teardown (versus the Hantek 6022be)

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LiquidMK:
SIBtronics, thanks! I did corrections that you proposed in .py files and got measurement of my RS-485 data. Unfortunately I'm absolute newbie in python, so I don't understand how to start "decode_uart" function..  :-//
Also I see that RS-485 measured by only one probe of VDS1022I don't looks like proper signal, because such kind of differential data transmission bus needs also differential probe. Somewhere in the Net I seen it's possible to make a "math" differential probe if to connect grounds of both channels and measure (A) and (B) wires of RS-485 by two channels of VDS1022I and make math operation on them. But yet I didn't tested it on VDS1022I.


P.S> I got that I had to open "vds1022.ipynb" in a Jupyter notebook and start examples from there. And there is an Error in TTL example: "OverflowError: Python integer 128 out of bounds for int8".
P.P.S> Project owner can not support this project any more: Unfortunately I don't plan on spending time on this project.  :-[ (https://github.com/florentbr/OWON-VDS1022/issues/103#issuecomment-2391915318)

SIBtronics:
yeah, i havent found a fix for this issue yet, my knowledge of python is also very basic. the integer out of bounds error has something to do with pythons numpy v2. in the older v1 numpy that did work, but installing that breaks a whole host of other things. i have managed to make it work sometimes by just removing the +128 in that line (probably the real fix would be to make it a 16 bit int, instead of an 8 bit one, but i havent figured out how to do this yet. the serial decode is also kinda broken in that i have managed to call it, but it also throws an error as far as i can remember, or it doesnt show any data, which i2c does. (see attachement for an example) its all a bit broken, because python sometimes likes to arbitrarily change the syntax for some stuff. i havent figured everything out yet. see also my issue: https://github.com/florentbr/OWON-VDS1022/issues/105

Merlyn:
Hi,

I'm using the OWON 1022I mainly for audio measurements.
When I set "Return to factory settings" one of the stereo channels is "dancing" left-right to the other which suggests variable phase difference. When I press Autoset two channels overlap perfectly.
What's going on and which is the right way?

SIBtronics:
autoset probably switches to alternating trigger, where it triggers on one and the other channel seperately. if you then go back it goes to a single channel trigger again, meaning one of your signals is weirdly out of sync with the other.

Merlyn:
Single is out of sync, alternate in sync.

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