[time-nuts] Lab Test Equipment

[Said Jackson]

Forgot to mention:

With the below two instruments you can adjust two of your Rb's so that all have the same frequency by adjusting them so that there is no phase drift over long time periods.

You will need to discipline one or more of them to gps to know if this frequency is actually accurate against a Nist standard. If they have a 1 pps input such as the Prs-10 Rb then this is very easy to do.

Bye said

Sent from my iPad

On Jul 20, 2010, at 0:20, Said Jackson <saidjack at aol.com> wrote:

> Hi there xx,
> 
> A 2 channel scope with 2ns per division and ext trigger input would already give you very precise performance data of all three sources against each other..
> 
> That's the low-cost solution. On the high end look to buy a Symmetricom Tsc-5115a analyzer.
> 
> Bye Said 
> 
> Sent from my iPad
> 
> On Jul 19, 2010, at 21:54, "Heathkid" <heathkid at heathkid.com> wrote:
> 
>> Hello.  I'm new to this list but have 3 Rb standards and am looking at measuring time (or drift between them).  What is the most important piece of NIST calibrated test equipment I need to own?  Is 3 enough using two Rb standards as a reference/control group (considering the 3rd can vote before being exposed to experiments)?
>> 
>> Thanks... 
>> 
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