> Actually, you can see this as a Shannon information channel, analog or > digital.
What sort of bandwidth do I need to run a PLL over a long link? I assume it takes enough to cover all the sources of error: drift in the master drift in the local oscillator drift in the communication link Does it depend on my target accuracy? Do I need more or less bandwidth for a better answer? Am I even asking a sensible question? What sort of changes in delays to I get on 10 km of fiber or coax or twisted pair? Is temperature the only interesting variable? Can I measure tides with a 10 km link? Or is that swamped by temperature? How about microwaves? Does the speed of light in air change with temperature or humidity or whatever? What's the final bandwidth out of the control loop on something like a GPSDO? -- 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.
