[time-nuts] Reverse-engineering LPRO

Magnus Danielson magnus at rubidium.dyndns.org
Sat Feb 16 18:10:48 EST 2013

Fellow time-nuts,

Considering that LPROs is pretty popular, I am a bit surprised that I 
have not seen any major reverse-engineering effort on the LPROs. I have 
the self-compiled LPRO service document, which collects parts of 
schematics from patents, but still.

My main reasons for asking is that I want to get a little better 
overview of how they work, how I can tune them up and what signals is 
available where. Naturally, always figuring if there is some interesting 
tweaks to be done.

LRPO is just a traditional analogue rubidium, in compact format, sure, 
but never the less.

I have noticed that different FPGAs have been used over time. Curious 
about the various jumpers and connectors in it.


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