Interesting stratum 1 NTP clock

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/ for
more details.

Disclaimer: No affiliation to Datum Inc... just a customer!


Some of you may be interested in this website about submicrosecond UTC on
a FreeBSD machine