Guys, Maybe it would be better to call it the "leading" edge? I have actually sent out a couple of our SynPaQ receivers with the 1PPS jumper in the "inverted" position per customer request. There always have to be a couple of oddballs.....
Randy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Normand Martel Sent: Monday, August 14, 2006 4:40 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Falling Edge Error If i'm not wrong, virtually ALL GPS modules have their timing standardized on the RISING edge and do NOT guarantee anything about the falling edge. Glenn's measurements confirm that fact... Ideally, to get sure the users will use the rising edge, that signal shall be a sawtooth!!! (or simpler: a random falling edge.) 73 de Normand VE2UM Montreal, Qc. Canada --- Glenn <[EMAIL PROTECTED]> wrote: > > I just tried a quick test with my HP 5334A, with a LPRO to TVB divider > on channel A and an Oncore UT+ on channel B. > > frequency difference: > measured on the falling edge: 37E-9 Hz measured on the leading edge: > 6.7E-9 Hz > > Both measurements are from the rising or falling edge of the 1 PPS of > the GPS, 100 sample average. > > cheers, > glenn > > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
