Products > Test Equipment
New toy(?) scope, DSO154pro, 1ch, claimed 40MS/s
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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