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Re: Interesting stratum 1 NTP clock
- From: james
- Date: Thu Jul 09 16:01:09 1998
Robert E. Seastrom wrote:
> Actually, you're looking for two different things here:
>
> 1) a frequency standard that is traceable to a cesium or rubidium
> frequency source, with an output of 1 MHz, 10 MHz, 100 MHz, or
> whatever the PLL in the Cisco wants to see to discipline the line
> clocking, and
>
> 2) a time standard (synchronized to USNO) with a 1PPS output that is
> synchronized to the top of the second.
We're using (as a stratum 1 NTP clock) the Datum Inc. TymServe 2100 box, a
nice 1U rack-mount unit which receives GPS and outputs NTP and 1PPS
(satisfying 2 above) and also has a 10MHz output (satisfying 1 above). A
rubidium oscillator is an option on this box. See http://www/datum.com/ for
more details.
Disclaimer: No affiliation to Datum Inc... just a customer!
James
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