[time-nuts] Interesting paper: Don't GPSD' your Rb...

[Azelio Boriani]

Magnus,

>If you flip back and forth, then it makes sense because your phase
deviations >will be less.

Can you further explain this? Thanks.

On Mon, May 7, 2012 at 8:57 AM, Magnus Danielson <magnus at rubidium.dyndns.org
> wrote:

> Hi Bill,
>
>
> On 05/07/2012 05:12 AM, Bill Hawkins wrote:
>
>> Thanks for the analysis, Magnus.
>>
>
> Always happy to contribute.
>
>
>  A few other time constants might be interesting -
>>
>> When a step change is made to the control voltage or current,
>> how long does it take for the oscillator to settle down to a
>> new value? Is it instantaneous compared to a second?
>>
>
> It depends on the rubidium FLL bandwidth. For OCXO it is much quicker.
>
>
>  Do different components in different oscillators affect the
>> settling time?
>>
>
> For rubidiums, yes. The FLL bandwidth will have such a "lag" effect until
> the slaved OXXO is back on track.
>
>
>  It is not useful to make the next change before the last one
>> is complete, at least for sampled systems. Using counters
>> filters the change rather than taking a sample.
>>
>
> If you flip back and forth, then it makes sense because your phase
> deviations will be less.
>
> You should however consider it when doing the stability analysis.
>
>
> Cheers,
> Magnus
>
> ______________________________**_________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/**
> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts>
> and follow the instructions there.
>