Ciao Luciano, On Tue, 13 Aug 2019 20:18:58 +0200 "[email protected]" <[email protected]> wrote:
> I was wondering, and I do it to you too, if this Texas Instruments device > could be used to build a > frequency difference meter with high precision features. > > http://www.ti.com/lit/ds/symlink/lmx2594.pdf > > http://www.ti.com/lit/ug/tidud10a/tidud10a.pdf If you mean by using two synthesizers to multiply DUT frequency up and then use some technique there to get better precision. Then the answer is a clear maybe! Multiplying up will reduce your SNR proportional to the multiplication ratio. Thus, if you have an instrument that operates already close to the noise limit at the DUT frequency, you will not get better by up-multiplication. On the other hand, if all you have is a crude frequency counter, then up-multiplication will help. But that's only because the instrument is not the right tool for the task. With this approach, you will still not get down to the level that a good instrument by its own can do. Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neal Stephenson _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
