Hi Single cycle jitter is a bit confusing when you talk about bandwidths of 5Hz to 20 MHz off a carrier. Since phase noise at 5 Hz does contribute to jitter over that bandwidth, an OCXO (with good phase noise close in) would be needed.
Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Attila Kinali Sent: Monday, August 16, 2010 11:53 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] OT: leaching was, Alternative time interval interpolation technique On Mon, 16 Aug 2010 07:58:01 +1200 Bruce Griffiths <bruce.griffi...@xtra.co.nz> wrote: > Such low jitter oscillators are readily available. > With some care (bandpass filtering) a cycle to cycle jitter of around > 50fs or so is attainable with a Wenzel OCXO for example. Apropos Wenzel: Is there any distributor that sells them in single quantities? Or do i have to get them from Wenzel directly? And is there any price list available? > However the time interval jitter degrades as the time interval increases. > Achieving a cycle to cycle jitter of 1ps or so is relatively easy with a > 10MHz or 100MHz OCXO having sufficiently low phase noise. Why an OXCO? AFAIK the temperature has only an effect on long term stability/drift, but doesn't affect short term effects (which cause the jitters). Or am i missing something? Attila Kinali -- If you want to walk fast, walk alone. If you want to walk far, walk together. -- African proverb _______________________________________________ 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.