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Phase noise seems to be expanding and contracting unable to lock signals

Question asked by tabbott Employee on Mar 16, 2012
Latest reply on Mar 16, 2012 by tabbott
During the *Signal Generator Back-to-Basics Webcast*, hosted by Agilent Technologies, on 29 February 2012, we received a number of real-time questions from a broad audience. 

If one person asks - someone else will want to know the answer too - so we have captured various questions and answers and are posting them individually here, in this Forum, for your future reference and immediate enjoyment!

*Question: In measuring phase noise of signal generators, there are times of the day that the signal seems to be expanding and contracting unable to lock signals. What could cause this?*  

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