[time-nuts] Equipment question: OCXO versus GPSDO + XTAL
hmurray at megapathdsl.net
Sat Mar 19 07:02:31 UTC 2011
>> In the .01 to 10 second range the OCXO provides a lower noise floor than
>> the TBolt. The TBolt provides better accuracy.
> ...although the TBolt itself has an OCXO built-in...
The catch is that the software keeps adjusting that OCXO, making it track the
That gives you great long term accuracy but injects short term noise.
Consider what happens if the software changes the DAC voltage from N to N+1
between two of your measurements.
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