[time-nuts] Calculating frequency differences using Lissajou figures

Hal Murray hmurray at megapathdsl.net
Sat Nov 7 21:50:14 UTC 2009


>>> So your frequency drift in this example is 1.7e-11 / month.

>> Not quite, you need to take the sign of the frequency
>> difference into account.

> But the sign of the difference would be obvious from the rotation
> direction of the Lissajous.   

Only if you remembered to include the direction when you took the first 
measurement and if you connected the scope up the same way a month later.


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