[ntp:questions] Problem with system clock refresh

JuanFran juanfranciscojara at gmail.com
Tue Nov 24 08:00:04 UTC 2009


On 23 nov, 19:48, Unruh <unruh-s... at physics.ubc.ca> wrote:
> JuanFran <juanfranciscoj... at gmail.com> writes:
> >On 23 nov, 15:02, "David J Taylor" <david-tay... at blueyonder.not-this-
> >bit.nor-this-part.co.uk.invalid> wrote:
> >> "JuanFran" <juanfranciscoj... at gmail.com> wrote in message
>
> >>news:d693971e-be41-4a9b-9926-ed4a04f5b319 at j9g2000vbp.googlegroups.com...
>
> >> > Good mornig. I have a trouble with NTP. I want a refresh my sistem
> >> > clock (client) with a LAN Server each 5 minutes. I don=92t know any
> >> > parameter of NTP protocol for this configuration. It=92s possible? The
> >> > refresh it done usually, but takes a long time.
>
> >> > I use Windows XP with meinberg software (client and server monitor).
>
> >> > Thank you!
>
> >> > PD: sorry for my poor english! :-)
>
> >> Why do you want to do this, Juan? =A0NTP will automatically adjust the
> >> interval between contacts to the server according to its own needs, and
> >> you don't normally need to set this. =A0If you /really/ need to do this, =
> >you
> >> could edit the ntp.conf file with notepad to have entries similar to this=
> >:
>
> >> _____________________________________________
> >> server =A0 =A0<lan-address> =A0 =A0maxpoll 8 =A0 =A0iburst
>
> >> server =A0 =A0<internet-address> =A0 =A0minpoll 10
> >> server =A0 =A0<internet-address> =A0 =A0minpoll 10
> >> server =A0 =A0<internet-address> =A0 =A0minpoll 10
> >> server =A0 =A0<internet-address> =A0 =A0minpoll 10
> >> _____________________________________________
>
> >> This sets the LAN-server to poll not less than once every 256 (2^^8)
> >> seconds, and have backup Internet servers which are polled at not less
> >> than 1024 (2^^10) second intervals.
>
> >> Cheers,
> >> David
> >Hello! I work in a project that it need synchronize a LAN for collect
> >data and images in real time. I need a lot of precision in the
> >synchronization of all computers on my LAN.
>
> We have no idea what "a lot of precision" means. does it mean to the second? Or to
> the nanosecond? If you want better than milliseconds, a) do not use Windows, and
> b) get a GPS receiver with PPS for each of your computers.
>
> >Thanks for your answer! I will try your solutions
> >Regars!

Hi! My system should be accurate to within approximately 10
milliseconds .I think forcing upgrade all computers in my LAN at the
beginning should be enough. Thank you very much for the anwser!




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