Re: GPS time sync with chrony and ESE serial device

[Denny Page]

> On Mar 6, 2020, at 11:28, Devren Yener <address@hidden> wrote:
> 
> Thank you Gary, I apologize for missing this link earlier! Yes this might be 
> exactly what we're looking for.  It would be a shame to get a time server 
> that doesn't involve low-level Linux hacking... :) But it's the company's, 
> not mine.  We're looking for anything reliable for professional radio 
> broadcasting purposes.  I would say that any new device we buy should be at 
> least as accurate as the ancient one we have, so I'm guessing that either 
> RS232 or a standalone server is the way to go, rather than USB.
> 

FWIW, the LeoNTP unit will be far, far more accurate than anything you can do 
involving Linux. With hardware timestamping on the Linux end, you can track 
with a standard deviation under in the 20-30 ns range. 

For comparison, my experience with Linux and attached serial is ~900ns standard 
deviation, with common spikes in the multi microsecond range.