You don't want it symmetric. If it were then you'd not be able to notice if it was inverted. You need the asymmetry but the next question is "how asymmetric?" In theory all the information is on the raising edge of the pulse so you cam make it as short as you like and not loose any information. OK so that sets the limits on both ends. Next thing, I'd guess is power, a low duty cycle certainly uses less power.
On Mon, May 14, 2012 at 8:23 AM, Mark Sims <hol...@hotmail.com> wrote: > > My first inclination, if I were building a timing receiver, would be to > make the PPS output a nice, symmetrical square wave. But pretty much all > GPS timing receivers output an anorexic, dinky little heroin addicted > supermodel sized pulse (from 1 to 150uS wide is typical). > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
