About the OCXO DuCULoN® Crystal Oscillator
At the heart of the Master Clock Management System, the OCXO DuCuLoN® crystal oscillator was engineered with incredible accuracy. This ultra-premium component is located at the center of the HDP-H900 Audio processor where all the tuning of sound occurs.
Shielded by a copper plate, the crystal oscillator’s location is protected from the influence of noise and temperature fluctuations that may happen in the vehicle. Two quartz crystals are housed in a dedicated, heat-insulated case along with a temperature control circuit which allows it to have 500 times the accuracy compared to a standard crystal oscillator. Ambient temperature changes can cause up to .002% of deviation of accuracy.
To reduce that fluctuation to 0%, the oscillator is heated when the power supply is turned on. Once its temperature reaches a level where the clock accuracy stabilizes, the “clock” indicator light on the Head Unit Commander turns on, and the temperature within the clock is kept constant.