[ntp:questions] NTP on local networks
unruh at invalid.ca
Wed Aug 1 14:47:53 UTC 2012
On 2012-08-01, Chris Albertson <albertson.chris at gmail.com> wrote:
> On Tue, Jul 31, 2012 at 7:46 PM, Kennedy, Paul <P.Kennedy at fugro.com.au>wrote:
>> Exactly so. you can purchase a GPS receiver for well under $100 connect
>> it to a serial port + pps on any of the pc's and have microsecond
>> accuracy in a few hours. This 'master' can then serve time to all other
>> PC's. The systems will then behave for years of unattended use. It is
>> a far more cost effective solution.
> The OP said he can go into another room and connect to the Internet can
> sync a computer. It seems to me that there might be some rule that
> prevents wires going into the room he works in, else why not simply run an
> Ethernet cable. Many places do have such rules. He might work in a place
> where they process classified information. In that case they might not
> allow an antenna cable or any kind of wire to penetrate the room boundaries.
> If I have guessed correctly then what he needs is an atomic clock. Buy a
> few of those $40 Rubidium units that are on eBay
Atomic clocks need to be synchronized to UTC, and they do eventually
drift as well.
> Chris Albertson
> Redondo Beach, California
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