Hi
As I feel my economy wouldn't support obtaining an oscilloscope I've had
thoughts of designing
and building some kind of simple data acquisition gadget. Now I don't mean
some super scope with
+100MHz sampling more something simple with specs like:
- Moderate sampling frequency, 10 - 40MHz
- Triggering functionality like if >trig level then trig
- Ability to transfer the data to computer for visual output

A have a draft idea of the system architecture:
It will consist of two parts:
1. The actual acquistition hardware, with two alternatives
        a. A ADC together with one or more FIFO (which I believe is the
commercial solution)
        b. A ADC together with an SRAM and memory controller with adress
count etc (would be sufficient
           at lower fs)
2. A host controller, an MCU of choice, to take care of the PC interface and
overall control.

My choice of hardware would be (due to availability): MCU AT90S8515 (if
sufficient), random logic
Altera EPM7064, ADC TDA8703?

So now my questions are:
1. Is there anyone who have done anything like this before?
2. Do you have any suggestions about improvements, additional features etc?

/Niklas

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu