Martyn Smith <martyn@...> writes:
> MEASUREMENT TECHNIQUE > > We have three sources close in frequency (within 1 x 10E-8 of each other). > > Two sources are connected to the Ch0 and Ch 2 inputs of the timepod, the > unit under test to the ref input. > > According to John, the result will be the actual phase noise of the ref > input, even if it is lower than the two other sources. > > No further calculations need to be made. > The is a publication by the NPL that talks about a similar technique, but comes to a somewhat different conclusion. http://publications.npl.co.uk/npl_web/pdf/mgpg68.pdf Bottom line: it holds that the phase noise of all three sources can be determined if they are taken two at a time; one as ref and the other as the DUT. _______________________________________________ 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.
