> The R+S FMU36 has a phase noise floor of around -143dBc/Hz (offset > > 10kHz) with a 10MHz input. > Whereas the R+S FSU67 has a phase noise floor of around -133dBcdBc/Hz > (offset = 10kHz) with a 640Mhz input. > > There is a definite improvement at lower frequencies but not quite as > much as one might have expected.
The *floor* of a YTO loop is not very dependent on the carrier frequency, as the loop bandwidth usually ends up less than 100 kHz. It's more interesting to look at the inband noise at 1 - 10 kHz offsets. The FSU67 looks great in that department: http://www.testbuyer.com/pdf/specs.cfm?pdf_id=56025C0EC7 Looks like it spanks the Agilent by a good 10 dBc/Hz. I want one. :) -- john, KE5FX _______________________________________________ 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.
