If anyone is interested in the equivalent functionality using an ATTiny25 (for instance, if you’re already heavily invested in AVR instead of PIC, like I am), ping me. I’ve privately written code to solve almost the same problem and it could easily be adapted into doing the same job.
> On Jan 13, 2016, at 5:23 AM, Edesio Costa e Silva <time-n...@tardis.net.br> > wrote: > > Hi! > > Try TVB's picDiv at http://www.leapsecond.com/pic/picdiv.htm > > Edésio > > On Wed, Jan 13, 2016 at 09:22:09AM +0000, Jerome Blaha wrote: >> Hey Guys, >> >> Is there an easy circuit to build that can consistently deliver a 1 PPS from >> a 10MHz source with excellent resolution and repeatability? My first >> application is to test different 10MHz oscillators without a TIC always >> attached and then compare the PPS output change over time against a master >> GPSDO PPS with an HP53132A. >> >> The circuit used for PPS generation would have to deliver consistent PPS >> output with preferably not more than 100ps noise or jitter, assuming a >> perfect source. I'm totally guessing that for this resolution, the PPS >> would have to be generated and accurate to within 0.001Hz every second. If >> this is too difficult, maybe the integration time can be increased to >> generate one pulse every 10second or every 100,000,000.00 cycles? >> >> Finally, is a square 10Mhz reference any better in this case than a >> sinusoidal input for generating the PPS? >> >> Thanks, >> Jerome >> >> _______________________________________________ >> 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. > _______________________________________________ > 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. _______________________________________________ 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.
