On Mon, May 27, 2013 at 7:56 AM, Miguel Barbosa Gonçalves <[email protected]> wrote:
> > Good joke :-) I imagine the electricity bill at the end of the month. > > I would like to have a clock sync with my super precise stratum 1 servers > :-) what's the point in having them if I can see the time anywhere? :-) Don't know about you but I'm always in from of a computer and the time is one the screen in the upper right corner. Yes the TV uses a bit of power but you could use a screen that draws less current and the Pi or other ARM powered computer uses very little power. But seriously, IRIG is the standard for local time distribution it does not have the delay and gitter that NTP over Ethernet has It is send via audio frequency so any only twisted pair phone cable woorks although I've mostly seen then use coax. NTP requires a Posix-like OS which means a fairly powerful CPU while time code can be processed limey with old 74lsxx logic or a tiny $2 uP. I believe there is a time code generator included in the standard NTP source distribution in /utils. The time code software sends the signal out the audio device at 8KHz sample rate and should be good at the millisecond level. In terms of both the amount f power used and accuracy IRIG is better for this then NTP. -- 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.
