From: Dr Bruce Griffiths <[EMAIL PROTECTED]> Subject: Re: [time-nuts] On some pitfalls of the dual mixer time differencemethod of h... Date: Mon, 02 Oct 2006 12:25:46 +1300 Message-ID: <[EMAIL PROTECTED]>
Bruce, > Interesting as the techniques employed may be, the resultant performance > is still inadequate for characterising state of the art oscillators. > The instrument phase noise floor is higher than that specified for > current low noise (but not necessarily low drift) crystal oscillators. > > The Allan deviation of current state of the art cryogenic sapphire > oscillators is more than an order of magnitude lower than the noise > floor of these instruments. Yes, but remember that we still have 99.99999% or so of oscillators covered with these methods. There ain't no such thing as a free lunch, and any aspect of precission timing fits the bill perfectly. Cheers, Magnus _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
