Betso GPS-1 Crystal Oscillator Calibration Unit - discontinuedThe GPS-1 calibration unit enables you to fine tune the oscillation frequency of your Betso timecode products. When they leave the factory the oscillator frequency of Betso timecode products is accurate to about .02 ppm (that's parts per million not Peak Programme Meter!) but inevitably over time the frequency can drift by as much as +/- 1 ppm per year so it makes sense to re-calibrate them every so often to maintain performance.
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