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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: 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/datum.com/ for more details. Disclaimer: No affiliation to Datum Inc... just a customer! James
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