saidj...@aol.com said: > its not a GPSDO though, not even a simple one :) > It does not discipline an oscillator. It generates the output by > mathematically calculating how many phases it has to add/drop in a second, > then digitally adds/drops/extends/retards the phase of the output clock to > achieve an average of number of desired clock cycles.
Is there something about the term GPSDO that says I have to do the "D" in the analog domain rather than the digital domain? I agree that current technology doesn't give results that are useful for many applications that currently use GPSDOs. What if the clock ran at a GHz? 10 GHz? Sure, it would have spurs, but would it be useful for some applications? Is a GPSDO still a GPSDO if the D/A driving the VCXO only has a few bits? How many bits does it need to be a real GPSDO? Is a battery powered wall clock listening to WWVB at 2 AM a WWVDO? It's got a pretty good ADEV if you go out far enough. -- 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.