[email protected] said:
> I was hoping someone who knows these devices might have some insight into
> what the issue is and how to determine which plans will not provide close in
> spurs, without requiring testing. Any suggestions are appreciated. 

If you look at the binary of the word that goes into a DDS adder, the ones 
with more low order bits have closer in spurs.  Think of that word as a 
fraction, binary point on the left rather than right.

If your adder word is 0.001 (binary) it will divide by 8, no spurs.
If you have 0.00100001, it will divide by a little less than 8 and have spurs.



-- 
These are my opinions.  I hate spam.



_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Reply via email to