BTW, once you have the ability to control the Tbolt temperature you can get the oscillator aging and temperature coefficients. You should first run (or have already run) the '&a' oscillator autotune to get a good value for the oscillator control voltage gain.
Once the unit temperature is stable, then the '&' command will show the oscillator aging. You should have several of hours of data on the screen for it to be valid. The DAC voltage plot should show a rising (or falling trend). To get a valid oscillator temperature coefficient you should first stabilize the unit's temperature. Then turn off the temperature control and let the unit heat up. Then adjust the plot view to show a range of temperature on the screen that is rising and fairly linear (i.e. trim off the ends). The '&' command oscillator temperature coefficient should be fairly accurate. Note that without temperature control the '&' command oscillator aging/tempco parameters don't have much validity... _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
