[time-nuts] oscillators

Bob Camp lists at rtty.us
Tue Aug 28 12:37:57 EDT 2012


Hi

I don't know that there is any data showing the TBolt adjusting for aging
during holdover. In other words: showing the holdover DAC voltage changing
at a completely constant temperature. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: Tuesday, August 28, 2012 12:19 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] oscillators

On Tue, Aug 28, 2012 at 6:17 AM, Jim Lux <jimlux at earthlink.net> wrote:

>  The MCXO has a one time calibration for frequency vs temperature that's
> programmed into it (and some use *very* clever ways to measure the
> temperature).  The disciplining algorithms in a GPSDO are a bit smarter;
>
>
Yes, correct.  But I was talking about during hold-over.   t-bolt in
holdover is no longer a GPSDO.    It falls back on using a temperature and
aging model.

Chris Albertson
Redondo Beach, California
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