Yes, the rising edge is the usual UTC reference for the PPS pulse. The PPS is used to trigger the interrupt on its rising edge so a 10uS long pulse should be enough.
On Mon, May 6, 2013 at 3:38 PM, Chuck Forsberg WA7KGX N2469R <[email protected]>wrote: > I would like to set up a NTP server on a machine running Linux > (currently Korora 18). > > What are the requirements for the 1 PPS signal fed to the carrier detect > pin? > I presume the 10 us 1pps from the Thunderbolt is too narrow. > I assume the rising edge of CD is the one gpsd triggers on. > > -- > Chuck Forsberg WA7KGX [email protected] www.omen.com > Developer of Industrial ZMODEM(Tm) for Embedded Applications > Omen Technology Inc "The High Reliability Software" > 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<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.
