[time-nuts] Digital Mixing with a BeagleBone Black and D Flip Flop
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Wed Oct 15 03:53:43 EDT 2014
What was the outcome ? Did it work, and what were the constraints or
problems encountered ?
On 15/10/2014 00:52, Magnus Danielson wrote:
> I think I wrote some VHDL code for a project like this... if I should
> dig it out again?
> On 10/14/2014 11:19 PM, Tom Van Baak wrote:
>> Hi Simon,
>> Some additional info. I first heard about the D-FF method of
>> frequency comparison in the late 90's (from Rick Hambly, I think) on
>> the old gps mailing list. It sounded really interesting. Since then,
>> the subject has turned up every few years on this list. But each
>> time, the topic seems to go away quietly with little or no data,
>> plots or explanation. In addition, none of the commercial products
>> I've taken apart appear to use this approach. Hmm. So that begs the
>> question -- what's really going on, and why.
>> I'm enjoying this thread because you've shown both technical
>> competence and optimistic persistence. Perhaps once and for all, with
>> your efforts, we can settle this matter. You will either find a
>> working combination with excellent performance, or you will uncover
>> enough uncontrolled variables that you never want to try it again.
>> Either way, we all learn a lot. Keep the photos, data, and plots coming.
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