IIRC, the module for the TDS200 series scopes also adds FFT
capability.  That may make it worth having as well.

Check secondhand retailers and maybe Ebay.  Good luck!

Mike H.


On Sat, 18 Sep 2004 13:24:50 -0300, Mark <mark@cpovo.net> wrote:
> 
>         I would like to build a RS232 interface to my TDS220 scope.
>         Tektronix has the TDS2CM modules, but at ridiculous prices!
>         Is there some schematics available?
> 
>         Mark Jordan
> 
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