[time-nuts] OP-Amps for 10MHz distribution...?

[Bob Camp]

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: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] 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...?


lists at rtty.us 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 -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.