Warren wrote:
The thing that you (and maybe Adler?) are missing is that effect goes away when the two frequencies ARE exactly the same. I'm not talking close, I'm talking the exact same freq with phase held in quadrature within single digit femtoseconds. BIG difference, Once that is understood, then that sort of answers your other comments.
Actually, this is not true. If either or both oscillators are affected by injection locking (and they pretty much all are, to some degree -- in this connection, note that you want to make measurements down to E-12 or better [I thought you mentioned E-14 somewhere early on], so even the least bit of IL will affect the results), what you have is two control inputs to the controlled oscillator (the EFC and the reference oscillator) and one control input to the "reference" oscillator (the oscillator under test, which is itself controlled by both EFC and the reference oscillator). They will reach equilibrium (unless the recursive feedback is unstable), but the locked frequency will be different from both oscillators' free-running frequency and the EFC will not correctly indicate the test oscillator deviation because it isn't the only control input in the system.
Best regards, Charles _______________________________________________ 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.
