[time-nuts] Equipment question: OCXO versus GPSDO + XTAL

Wolfgang timenuts at triplespark.net
Sun Mar 20 22:00:25 UTC 2011


Hi Bruce,

thank you very much for the insight! It's exactly the answer to what 
I was wondering. 

Regards,
Wolfgang, DL1SKY

On Saturday 19 March 2011, Bruce Griffiths wrote:
> Since the 53320A TCXO option has a 1s ADEV spec of 1E-9 whereas the OCXO
> option has a 1s ADEV spec of 1E-11 and the PLL bandwidth is unlikely (no
> info on the PLL bandwidth available from datasheet) to be very large the
> OCXO 
[you mean: TCXO]
> contribution to measurement uncertainty will likely be
> significantly larger than that of the OCXO even when phase locked to an
> external standard particularly for short gate times (less than the
> reciprocal of the PLL bandwidth i.e. probably below a few tens of
> millisec). 



More information about the time-nuts mailing list