Mark,
Thank you for your work and your reply, I was able to disconnect the
output of the DDS board from the 1 second divider, the DDS board
produces a clean sine wave.
I thank you for your article, I have a couple of follow up questions:
1. Which pot is the C-field?
2. Did you ever set reset on pin 4 of the PIC?
3. Did you succeed in making the RS-232 interface work?
4. If so which interface, the S, F, or the program interface?
Thanks Dan kb0qil
Mark Sims wrote:
> I spent quite a bit of time poking and prodding FE5680's. A while back, I
> posted a piece about what I found. It covers some important details about
> programming these units. The part about setting the frequency is at the end
> of the piece. Dieder has it available on his site:
> http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:rubidium_oscillators
>
>
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