Temperature Test, Compensation and Oscillator Aging
The Oscillators are 100% tested in the temperature chambers for frequency characteristics over the intended temperature range.

If an oscillator does not pass the specification, component values are changed to compensate the unit. The unit is re-tested in the temperature chamber before it is passed.

The completed oscillators are aged at an elevated temperature for a period of time and tested for any abnormal frequency shifts.

[applies to Oscillator production]