> Remarkably, the simplest and still one of the best GPSDO I've tested was the > 10 kHz Jupiter and analog PLL-based standard by James Miller. It performed > superbly. It's the 4th GPSDO at: http://www.leapsecond.com/pages/gpsdo/
In hindsight, that doesn't seem too surprising. I'm not a Juniper wizard. I could be way off here. I'm assuming the Jupiter does phase jumps every second and uses DDS like mechanisms within each second. The DDS will make spurs. A simple analog filter will get rid of most of them. What gets through will be close in. The phase jumps turn into close in phase noise where "close" is under 1 Hz. How would you measure that sort of phase noise? -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
