[time-nuts] FE-.5680A trimming resolution

Magnus Danielson magnus at rubidium.dyndns.org
Wed Feb 1 23:50:39 UTC 2012

On 01/02/12 10:25, Attila Kinali wrote:
> On Wed, 01 Feb 2012 01:52:16 +0100
> Magnus Danielson<magnus at rubidium.dyndns.org>  wrote:
>> On 31/01/12 20:43, Attila Kinali wrote:
>>> On Tue, 31 Jan 2012 18:50:08 +0100
>>> bg at lysator.liu.se wrote:
>>>> Exactly that _is_ the appeal of the Tbolts.
>>> Yes, but can this be replicated with a standard GPS module?
>> Yes. If you look up old papers, they already did this with Oncores,
>> Cesium clocks and synthesis.
> I have not seen any such papers yet. Do you have any pointers or hints
> what to search for?

Let me see... yes, here it is:


Was not too hard to find.

HP5061B 10 MHz divided by 188 and then the internal TCXO divided by 359 
and then phase-comparision lock of the TCXO. Need to have a matching 
VCTCXO for that frequency, but other than that. Looks up a Oncore VP 

Notice the comment on the crystals performance compared to the need for 
the experiment.

They don't really spent much time theorizing about it and waving hand, 
as it is fairly assumed as common knowledge and just hand-waving over 
the numbers is sufficient to convince that audience. It should also come 
as no surprise.


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