Hi Didier, the sigma-tau plot looks indeed strange! Can you send me the data file for some tests with it?
73 de Ulrich, DF6JB > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von Didier Juges > Gesendet: Mittwoch, 25. Oktober 2006 15:36 > An: Discussion of precise time and frequency measurement > Betreff: Re: [time-nuts] Allan deviation -> finally some data!!! > > > > ---- Dr Bruce Griffiths <[EMAIL PROTECTED]> wrote: > > > > > The apparent behaviour of your 10811's is far too good!! > > Over a period of 15,000 seconds the allan deviation should have > > reached > > a minimum and then increased as the effects of ageing > manifest themselves. > > Either the oscillators are injection locked or your > analysis is suspect. > > > > If the analysis were correct the performance approaches or even > > exceeds > > that of the most stable crystal oscillators ever built. > > This is extremely unlikely something has to be wrong. > > > > Bruce > > It looks as if (I do not know for a fact, but I will check > tonight when I am back at home) I measured the 10811 against > itself, instead of against the 5370's time base. So what is > being displayed is the noise in the trigger circuits of the > 5370 and the delay in the cables. > > Didier > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-> bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts