[time-nuts] FE5680 DDS plot

Magnus Danielson magnus at rubidium.dyndns.org
Sun Feb 5 14:02:46 UTC 2012

On 02/02/2012 06:15 AM, Scott Newell wrote:
> Javier Herrero's exciting DDS discovery led to this plot of the unit
> tweaking the frequency (cmd 0x22):
> http://n5tnl.com/time/fe-5680a/graphs/dds_autotuning.png
> It appears to make an adjustment even before lock!

It is interesting how the DDS frequency compensates the temperature. 
Should mostly improve performance on start-up or unstable thermal 
situations, but be of fairly low improvement on static conditions.


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