[time-nuts] TBolt-PRS10

[Azelio Boriani]

Upgrade to a TBolt from what?
If you have a M12+ disciplined PRS10 what else can be better? Great short
time stability given by the Rb (and what a Rb, a Stanford Research PRS10),
great long term accuracy given by the M12+...

On Sat, Mar 24, 2012 at 8:22 PM, Jürg Kögel <j.koegel5 at gmail.com> wrote:

> Having a M12+Timing GPS driving the 1 Hz input of my PRS10. I decided
> to upgrade my house referenc switching to a Tbolt as the 1 Hz source.
> First I did some time analysis using my HP 5372A controlled by my FTS
> 4060 Cesium standard that I did turn on beam current  three days ago
> to allow it to settle. Tests showed maximum deviation of 2 nsec with
> the Tbolt over  1000 seconds and 63 nsec with the GPS (20 nsec with
> Sawtooth Correction)  Again 1000 seconds.  Plot's are available but
> exceed attachment size.
> The output of the PRS10 in turn disciplines an Oscilloquartz 8600.
>
> Here are my questions:
> Are 2 nsec acceptable for a Tbolt
> What should the Tbolt loop time be for this application
> What should the loop time be for the PRS10
> What is the long term performance of the Tbolt and what is the
> contribution due to the GPS signal.
> What is the resolution of the Tbolt detecting and correcting the 1 pps
> and is it done by changing the OCXO frequency for short periods. My
> tests show a slight change.
> Does any one have a similar setup using a Tbolt and 1 pps input to a
> PRS10  and experience to share.
> Thanks for any help.
>
> Juerg
>
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