[time-nuts] Best Rubidium Frequency Standard

[Bob Camp]

Hi

Even if they do take the correction, do they want it before or after the PPS comes along? If you have a destination device that wants it before the pps and a GPS that gives it to you after the PPS … that’s a bit of a problem. 

Bob


> On Mar 13, 2016, at 12:07 PM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> 
> --------
> In message <1e2b85.da47c0.4416d1a1 at aol.com>, KA2WEU--- via time-nuts writes:
> 
>> what is wrong with   the Standford Research  Rubidium  standard with a 1 
>> sec sync pulls form a GPS satellite ?" 
> 
> At least some of the firmware versions do not allow you to change the
> PPSIN offset second by second, so you cannot compensate for the
> "negative sawtooth", and the resulting "hanging bridges" means that
> you have to us a very unoptimal PLL time constant.
> 
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.