Now this is some very wise advice indeed. Its the ole power cost. Great reply and solution. I like things that draw zip power and can live on a basement wall for 10 years just doing there job.
On Wed, Oct 12, 2011 at 2:14 PM, Chris Albertson <[email protected]>wrote: > On Wed, Oct 12, 2011 at 4:33 AM, Peter Gottlieb <[email protected]> wrote: > > I would like to get better than 100 uSec so I can get a couple of degrees > > resolution on a synchrophasor project. > > You are in luck 100uS is is the range of "easy to do". Setting up > an NTP servers is a different task from setting up a GPSDXO. One > does not need a GPSDXO for NTP. The Thunderbolt is likely the lowest > price GPSDXO but by the time you get an antenna and power suply and > cables you will have spent abot $300. It will drive an NTP server to > bette than your 100uS requirement. > > But you can also buy a Motorola "Oncore" series GPS for as little as > $18 on ebay and it will run NTP just as good as the Thunderbolt. For > $60 you can buy a brand new Oncore with warenty and tech suport and it > is an order of magnitude better. > > If budget is important be sure an look at the cost of electric power. > It is easy to burn up $250 per year of power or even more. Those > "junker" PCs you find indumpsters are not cheap if you run then 24x7. > I found a brand new intel Atom powerd machine pays for itself. Use > a 16GB flash drive or even have it boot off the network and have zero > local storage. > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
