[time-nuts] Using a lock-in amplifier

Bob Camp lists at rtty.us
Tue Aug 30 16:51:26 UTC 2011


I suspect that the "typical phase noise of 0.035 degrees" spec is going to
make using it as a phase detector a bit of a challenge. You would have to do
some digging to see if it really does anything that a cheap double balanced
mixer does not do. 


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Don Lewis
Sent: Monday, August 29, 2011 8:39 PM
To: time-nuts at febo.com
Subject: [time-nuts] Using a lock-in amplifier

This might be off topic, and if so, pls disregard. (I am new to your
group..just listening lately, a little rusty on some of your talents.)


I have an older EG&G Model 5202 Quadrature lock-in amplifier around for
years waiting for a project. (.2 - 50Mhz)


It seems its' phase sensitivity could be used to discipline an oscillator to
a high degree of accuracy using its' DC-output.


Maybe it's not what it was designed for .I'm trying to find a use for it.




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