[time-nuts] Rb Oscillator - rather fundamental question
matt at smiffytech.com
Tue Feb 23 22:10:47 UTC 2010
Quoth Poul-Henning Kamp at 2010-02-23 20:22...
> In message <4B83A33C.1010903 at smiffytech.com>, Matthew Smith writes:
>>Simple and rather fundamental question: does the common or garden
>>rubidium oscillator constitute an atomic clock?
Many thanks for the responses and ensuing discussion that has
considerably value-added to the yes/no nature of my original question ;-)
Now I know a lot more about primary/secondary standards than I did a
(9,192,631,770 Cs wobbles * 86400) ago.
I can now proceed with my unconventional calendar design (a cascade of
dekatrons) knowing that it will be driven by an atomic ticker.
BTW: does anyone know if a 0.55V p-t-p sine wave from an Rb source would
be enough to clock an Atmel AVR microcontroller? The crystal/clock
input *is* an amplifier, but didn't know if I'd need to do anything to
the signal first, to get it closer to the 5V logic level.
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