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Hantek DSO2xxx schematics

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tunk:

--- Quote from: pcprogrammer on July 08, 2022, 12:24:08 pm ---The first control signal switches the input relay and I named it CHANNEL2_FILTER, but I'm not sure to what menu item this belongs to.

--- End quote ---
Don't have a clue - could it possibly be the 20MHz bandwidth limit?

pcprogrammer:
That was what I was thinking too, but then I noticed the other part with the cap to ground via the transistor. I guess that is an actual low pass filter.

Maybe when I start measuring on the thigh I can find out :-//

pcprogrammer:
Had to swap signal for the LCD on the connector between the two boards, so here are the latest schematics for the user interface board.

Also added the archive for EasyEda.

pcprogrammer:
And here are the schematics for the main board.

morgan_flint:

--- Quote from: tunk on July 08, 2022, 12:46:13 pm ---
--- Quote from: pcprogrammer on July 08, 2022, 12:24:08 pm ---The first control signal switches the input relay and I named it CHANNEL2_FILTER, but I'm not sure to what menu item this belongs to.

--- End quote ---
Don't have a clue - could it possibly be the 20MHz bandwidth limit?

--- End quote ---
I also thought of that but, in that case, you should hear the really clicking when switching the bandwidth limiting on and off from the menus and, in my case, I can't hear it

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