[time-nuts] oscillators

Chris Albertson albertson.chris at gmail.com
Tue Aug 28 05:45:23 UTC 2012

On Mon, Aug 27, 2012 at 7:33 PM, Jim Lux <jimlux at earthlink.net> wrote:

> On 8/27/12 4:15 PM, Rick Karlquist wrote:
>> Several decades ago, the concept of the "smart clock" arose
>> at what was then HP.  The idea was as discussed here to
>> "characterize" past aging, "predict" future aging, and
>> then "correct" the aging.
We know what a OCXO is and a TCXO is.  I was at a presentation at work a
whike back and they called what you describe a "MPCXO"  or MicroProcessor
Compensated XO.    They said the characteristics were between the OCXO and

Doesn't the thunderbolt do this.  I think it watches the aging rate of the
OCXO and adjusts during hold over.


Chris Albertson
Redondo Beach, California

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