Hi It's always a "that depends" sort of thing. If you are after total perfection, then indeed any phase shift is suspect. That includes the shift from the delay in the op amp.
Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Hal Murray Sent: Wednesday, February 29, 2012 3:56 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] OP-Amps for 10MHz distribution...? [email protected] said: > You *could* use transformers or filters to transform to higher impedance, > but they add phase shift. Phase shift is a problem if it changes (over time, > temperature, vibration, phase of the moon...). Change in phase = change in > time = signal is degraded. Transformers are handy for providing isolation. How significant are the phase shifts through a transformer relative to other sources of trouble? How much trouble do ground loops cause? -- 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. _______________________________________________ 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.
