Hal,
Wonderful plots. Thanks for posting them. Can you tell us a little
about your test setup? I think the group would enjoy hearing how
a long-term experiment like this is done.
I especially like the one-year plot since it nicely shows that even
after a couple of weeks real-world factors like mid-term stability
or environment or just plain random changes become as or even
more important than drift rates.
/tvb
----- Original Message -----
From: "Hal Murray" <[email protected]>
To: "Discussion of precise time and frequency measurement" <[email protected]>
Sent: Wednesday, September 14, 2011 4:07 PM
Subject: Re: [time-nuts] OCXO and Aging
This is a 3 MHz OCXO from some old telcom gear, nothing special,
First 3 hours:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-a.gif
First 3 days:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-b.gif
First 10 days:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-c.gif
First year:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-d.gif
Days 16-36:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-e.gif
Days 15-60:
http://www.megapathdsl.net/~hmurray/time-nuts/Drift-ocxo3mhz-f.gif
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