[time-nuts] spur prediction DDS software

jimlux jimlux at earthlink.net
Thu Jan 27 13:33:57 UTC 2011


On 1/27/11 5:17 AM, Luis Cupido wrote:
> Hi,
>
> Is there a DDS spur prediction software around ?

Not generically..

There is a dissertation out there with some matlab code.  I'll see if I 
can find a link

Most of the time what I do is write a little program in matlab/octave, 
run a bunch of samples, and FFT it.  That way you can model things like 
error feedback or truncation effects.


>
> I mean for an arbitrary DDS design, like I would
> implement with logic or fpga etc.
>
> A code where I can enter nr of bits adc bits etc.
>
> (not a thing for a particular analog-devices chip or
> other dds chip)
>
> tks.
>
> Luis Cupido
> ct1dmk.
>
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