[time-nuts] New 4 hints from Agilent?

jim_johnson at agilent.com jim_johnson at agilent.com
Tue Dec 14 15:19:09 EST 2004


Hi Brooke,

   I see what you mean.  Seems to me that what they
are trying to convey is the concept of "how far your 
timebase will have aged" rather than the "rate of aging".
As far as I know, the aging of oscillators is a monotonically
decreasing phenomenon.

Having fun,
Jim W6SC


>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
>Behalf Of Brooke Clarke
>Sent: Tuesday, December 14, 2004 11:54 AM
>To: Discussion of precise time and frequency measurement
>Subject: [time-nuts] New 4 hints from Agilent?
>
>
>Hi:
>
>Agilent has AN1499 where they make the case that leaving a 
>counter on all the time improves the time base stability by 
>more than an order of magnitude, but the numbers shown on page 
>3 seem to indicate that it gets worse.  I expect that the 
>numbers are a typo.
>
>They also make the case that the counter should be calibrated 
>in place so that power is not cycled.
>http://cp.literature.agilent.com/litweb/pdf/5989-1592EN.pdf
>
>Have Fun,
>
>Brooke Clarke, N6GCE
>-- 
>w/Java http://www.PRC68.com
>w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
>http://www.precisionclock.com
>
>
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