); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY But he knows the period already to parts in 10e-9 or better. His email sez it's a PPS signal ex an Rb source. Not much point in trying to measure that with a scope timebase! So I still think he wanted to measure the ~10uS pulse width...... <g> DaveB, NZ
----- Original Message ----- From: "Didier Juges" <[EMAIL PROTECTED]> To: "'Discussion of precise time and frequency measurement'" <time-nuts@febo.com> Sent: Wednesday, October 24, 2007 5:27 PM Subject: Re: [time-nuts] Scopes and 1 PPS signals? > ); SAEximRunCond expanded to false > Errors-To: [EMAIL PROTECTED] RETRY > > I read this: > > "But using an HP 54501A DSO it's almost impossible to determine the > period. > http://www.prc68.com/I/O1814.shtml" > > It seems he wanted to measure the period. For once, the thread > actually was > about the original question :-) > > Didier > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Dave Brown >> Sent: Tuesday, October 23, 2007 11:21 PM >> To: Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] Scopes and 1 PPS signals? >> >> I took Brookes original inquiry to be about measuring the >> width of the >> nominally 10 uS wide PPS pulse-in which case anything that >> alters the >> pulse width is a no-no. Precise and stable triggering delay to >> place >> one of the pulses in the on-screen area is all that is required. >> DaveB, NZ > > > _______________________________________________ > 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. > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.15.6/1086 - Release Date: > 22/10/2007 19:57 > > _______________________________________________ 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.