Products > Test Equipment
New toy(?) scope, DSO154pro, 1ch, claimed 40MS/s
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Fungus:
Here's the awesome setup I was using above:


It's an Arduino clone that can run at 32MHz and the supplied probe at 10x. I told it to toggle an I/O pin as fast as possible and that makes a 16MHz square wave.

Reading between the lines: If it's sampling at 40Mhz and producing that display then it must be doing sin(x)/x interpolation. Maybe that's what the FPGA is for... :)
Fungus:

--- Quote from: tatel on January 05, 2023, 10:59:57 pm ---Edit: ni de coña...

--- End quote ---

El tuyo no?


--- Quote from: tatel on January 05, 2023, 10:59:57 pm ---I see your screen shows Zeeweii, mine doesn't. Different software versions perhaps? My square wave becomes sinusoidal sooner

--- End quote ---

It doesn't show a software version.

If the bandwidth is correct then the square wave will start to become sinusoidal as you go above 5Mhz (ie. when the first harmonic is at 20Mhz).

FWIW: If I output a 4Mhz square wave it shows the 4MHz base wave and the 16MHz harmonic:


Textbook stuff.  :-+
Fungus:
I think I found a hidden feature: If you long-press the "Auto" button it switches into a mode where it sets the horizontal timebase continuously to match the input signal.

I tried pressing all the buttons at power-on, nothing seems to happen - no cheat codes here.

PS: It can also stop and then zoom out. Take that, Siglent!

If only it had two channels and a RS232/I2C decoder, it would be 100% awesome for "Arduino" work. You can't have everything at this price though.   :popcorn:
Fungus:

--- Quote from: Matamipru on January 03, 2023, 10:18:29 pm ---...

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The CPU is a "WinnerMicro W806"

The chip labelled "3PEAK 3PA9280" is the A/D converter but the datasheet says it's only rated to 32MHz.

GS8094 = Quad opamp

They seem to have lasered off a chip number. Is that the FPGA? (I guess it must be, by elimination...)
hallo1:
Something interesting is that there is an USB to UART converter chip on board.
After powering on the scope and connect it to some PC you can see a serial port showing up.
But if you open the port the scope just immediately shut itself down! Some self-protect method?

This is very likely to be a programming port, but the programming tool of W806 only have one function (program flash) so there is no easy way to dump the firmware currently.
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