DIY oscilloscope
Squonk has some useful links if you want to build your own scope:
- A nice HDL example of an oscilloscope using a FIFO and trigger
- A 100 MHz input stage
- A firmware development/improvement for the DSO “Welec 2000a- series”
- The (sad) story about the DSO Quad portable scope (why sad?)
Thanks Squonk! Via the forum.
This entry was posted in oscilloscope and tagged DIY, oscilloscope.
Comments
Anyone worth his salt in this field could have told you that the DSO Quad was likely over specified for the price. I’m sure Seeed has been told this before. I’m glad to see them finally owning up to it; but sad to see it is only after people actually paid for it.
Just looking at the part list would give you a hint: the ADC chip is an AD9288-40, the “-40″ implies that sampling is done at 40 MHz only…
And according to Olivier (that wrote the http://www.soudez.be/joomla/content/view/12/27/lang,en/ back in 2006), the R24/R26/C74 network provides an anti-aliasing filter featuring a 4.4 MHz bandwidth only…
I agree, this is sad for the persons who spent their money trustfully to get a decent scope.