Thursday, March 13, 2014

What Happens Behind OCXO 10Mhz Frequency Reference

By Gwen Lowe


It is extremely important to keep both the crystal and circuitry in a controlled structure so as to manage temperature sensitivity. This is what denotes a stable temperature, which ought to be higher than the one responsible for exposing OCXO 10MHz Frequency Reference. Better still; the oven can perform better if it is set to turnover resonators degree to give it the capability of balancing with the outside temperature.

Anomalies related to temperature effects can be minimized if the temperature can be controlled to the required level. Such anomalies can affect the resonators and cause limited allowance and compensation. In the controlled temperature, overtone crystals work better and may also be used. The reason for better performance is that they are stable when the conditions are controlled appropriately.

Stability is highly enabled with these oscillators as compared to the others like TCXO and SPXO which have no temperature control mechanisms. Rather, their temperature characteristics are determined by the crystal units. The oven controlled oscillator is better placed because of its oven block which is capable of maintaining a stable temperature as required.

Stability comes about as a result of the dynamic characteristics as well as the static. Oven accuracy, range of design temperature, the resonator and other components determine the stability. Such temperature stability performs within the recommended range. The narrow ones have proved to have increased stability due to the fact that restriction is possible to a specific area.

The oven controlled oscillator needs more power in terms of consumption because it takes a long time to warm up. It is the kind of insulation used that majorly determines the power needed to be used for oven heating. If it is high, the heat usage will be reduced and this results in usage of less power.

The oven temperature ought to be set to some high level than the renowned ambient one to enable the oven to control everything better. This calls for warming of the resonator so as to get the required heat. All these are done so that the oven can be allowed to balance to equilibrium.

If you want to minimize variations, then you have to carry out regulations. This is important so as to help reduce disturbances within the oscillator frequency. It is the difference in power that causes this to happen. If not dealt with, then it may go back to equilibrium.

Since the oscillator is sensitive to load, an amplifier could be used so that multiple outputs can be obtained. This is the reason why they should be built around the oven so that temperature stability does not interfere so much. Humidity also needs to be checked because it could have some impact on the stability.

Such issues may be averted by measuring instability and modelling it to the required standards. Control mechanisms are also available and can be used for the better to avert instability. Temperature compensation can be achieved through such mechanisms. Additional characteristic like retrace is another option which can be applied for these aversion purposes.




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