> rich...@karlquist.com said: > > Also in 1996, phase microsteppers were already legacy technology and > didn't > > have a good reputation for spectral purity. Another non-panacea. > > What is a phase microstepper and/or how does it compare to a DDS? > > (Google gets lots of hits, but they all refer to motors.) >
H-maser aging is typically compensated by something like spectratime femto-stepper http://www.spectratime.com/products/itest/clock-instruments/FemtoStepper/ microsemi AOG http://www.microsemi.com/products/timing-synchronization-systems/time-frequency-references/active-hydrogen-maser/aog-110 (there are probably others, please post if you know about them!) afaik they contain a OCXO/BVA that is steered based on a DMTD measurement against the input reference. AW _______________________________________________ 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.
