[ntp:questions] GPS-PPS, standalone server. NTP

Fida Hasan k.fidahasan at gmail.com
Tue Jun 13 12:02:45 UTC 2017


On Monday, June 5, 2017 at 3:00:08 AM UTC+10, Hans Mayer wrote:
> > How can I increase the frequency of logging the states? For example, can I log regularly in every seconds?
> 
> 
> Only for the clockstats. And only for the PPS driver. 
> You have to set flag4 to value 1 
> see my previos posting 
> 
> About the output of "ntpq -pn"
> If it looks like this everything is fine. 
> 
>      remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> o127.127.22.0    .PPS.            0 l   17   32  377    0.000    0.008   0.009
> *127.127.28.0    .GPS.            0 l   19   32  377    0.000   -3.174   1.947
> 
> In your case it's driver 20 instead of 28
> 
> 
> // Hans

Hi Hans,
Thank you for your great contribution. Appreciate that much.
However, did you ever tried to achieve 1-microsecond accuracy in your used refid (in your case with driver 28 which NTP uses)? My primary goal is to attain 1-microsecond accuracy bond where I can see 3 milliseconds offset with .GPS refid.

Any idea?

Regards.



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