[time-nuts] GPSDO TC

Bruce Griffiths bruce.griffiths at xtra.co.nz
Thu Jan 8 16:28:35 EST 2009


Richard Moore wrote:
> On Jan 8, 2009, at 2:58 AM, time-nuts-request at febo.com wrote:
>
>   
>> Message: 6
>> Date: Thu, 08 Jan 2009 11:51:50 +0100
>> From: Magnus Danielson <magnus at rubidium.dyndns.org>
>> Subject: Re: [time-nuts] GPSDO time constant
>> To: Tom Van Baak <tvb at leapsecond.com>, 	Discussion of precise time and
>> 	frequency measurement <time-nuts at febo.com>
>>     
>> For ThunderBolt owners it is pretty straightforward to adjust the  
>> TC and
>> damping, which is very nice. Use this oppertunity!
>>     
>
> So, Magnus (and Tom), what damping factor do you suggest for a TBolt?  
> I'm running a verrry long TC now. If 1.2 is not actually critically  
> damped, what value would be? Any guesses? BTW, I really like that  
> plot of Tom's that tracks the oven and then gets better from the GPS...
>
> Dick Moore
>
>   
Richard

As always, the problem is how do you know that the time constant you are
using is anywhere near optimum?


Bruce




More information about the time-nuts mailing list