What he is asking is if the Rb's frequency adjustments are done with a DAC or a DDS. And how fine the steps are.
My answer is "I don't care." If my goal were to build the best frequency reference then I'd seriously shop around for the best oscillator but my goal is not that. It is to to get the best trim setting I can get for the existing equipment. I suspect my $40 FE-5680A is not the best On Fri, Mar 21, 2014 at 12:51 PM, <ewkeh...@aol.com> wrote: > Paul > Do not understand your question, what do you mean with tight? > Bert Kehren > > > In a message dated 3/21/2014 3:22:41 P.M. Eastern Daylight Time, > paulsw...@gmail.com writes: > > Hal > Actually now that you mention it was the DDS chip. > Bert > I agree with your comments. How tight can it be. > Thanks > > > On Fri, Mar 21, 2014 at 3:13 PM, Hal Murray <hmur...@megapathdsl.net> > wrote: > >> >> albertson.ch...@gmail.com said: >> > There seem to be two different class of Rb. One takes an EFC just like >> the >> > OCXO so the controller looks just like a GPSDO and the other class of > Rb >> > accepts serial commends to adjust the frequency. These have an > internal >> > DAC. But either way the logic is the same. >> >> Is it a DAC or DDS chip? Has anybody looked at the spectrum? >> >> >> -- >> These are my opinions. I hate spam. >> >> >> >> _______________________________________________ >> 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. > > _______________________________________________ > 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. -- Chris Albertson Redondo Beach, California _______________________________________________ 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.
