[time-nuts] Measure GPSDO stability with minimum resources?

jimlux jimlux at earthlink.net
Thu Oct 6 14:59:05 EDT 2016

On 10/6/16 10:11 AM, Chris Albertson wrote:
> Wouldn't "aging" be the change in the temperature v. frequncy graph over
> time?      It is hard to hold temperture constant so maybe record the
> function at several different times.
> This is one big advantage of using a microprocessor inside the GPSDO, It
> can log internal data to either a SD card or use a USB link to a PC to be
> recored in log files.   Even my "simple as possible" GPSDO push data to a
> PC over USB.   It is easy to glue a temperature sensor to "whatever" and
> log it
In fact, many processors like the Freescale parts used on the Teensy 
have a temperature sensor built into them - sure it's the die temp, and 
it varies with processor loading, but it's better than nothing.

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