[time-nuts] Low-long-term-drift clock for board level integration?

Jim Lux jimlux at earthlink.net
Mon Feb 20 17:11:04 UTC 2012

On 2/20/12 8:34 AM, Achim Vollhardt wrote:
> Hi Bill,
> what about White Rabbit?
> http://www.ohwr.org/projects/white-rabbit/wiki/Description
> Successor of NTP.. PTP: precision time protocol.
> It delivers Gigabit Ethernet and precise (<1nsec) timing over singlemode
> fiber. You would have to connect all devices into a fiber network
> instead of a copper based network and all switches in between would have
> to be WR compatible.. but this could solve your problem.
> Javier Serrano (one of the developers) is also on this list.. he might
> add/correct me.

I think the OP needs something over a large geographical area, and I 
don't know that PTP/1588 would work through a routed "internet" kind of 

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