[ntp:questions] Running ntpd with PPS precision signal only

alex n alexvm22 at gmail.com
Wed Feb 29 17:23:21 UTC 2012


2012/2/29 unruh <unruh at invalid.ca>

> ?? If nmea is lost, ntpd will continue to use the PPS with the local
> clock supplying the "seconds" to label which second the PPS is
> associated with . Unless your local clock jumps by over a second
> suddenly, that will be perfect. Ie, the nmea is ONLY useful in making
> sure that your local clock is within 1 second of the true time.
>
>
If I disconnect GPS receiver ntpd stopped (reach value is decreased to 0).
PPS is incoming from FPGA. Perhaps I need some config settings?

my ntp.config

#NMEA + PPS
server 127.127.20.0 mode 16 prefer minpoll 4
fudge 127.127.20.0 flag1 1 flag3 1 refid NV24

Thanks,
Alex.


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