TA-40.000MCE-T

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Oscillators, such as the TA-40.000MCE-T (TA), are used for a variety of purposes, from providing precise timebases for clocks and watches to providing frequency sources for wide-band radios and other applications. Oscillators are designed to provide a steady, repeated output with a certain frequency and amplitude for a given period of time. The TA is a high-performance oscillator designed for high performance requirements such as frequency stability and long-term stability performance. This article will discuss the application field and working principle of the TA.

Application Field

The TA is primarily used for high-precision, high-reliability frequency and time base applications. It can be used in a variety of applications, including scientific, military, and aerospace applications. In particular, the TA can be used to produce high-precision frequency standards, providing long-term stability and low-noise performance. The TA is also suitable for use in mobile communication systems, base stations, and telecommunications equipment, as well as in test and measurement equipment. Additionally, the TA can be used in navigation systems, satellite communications systems, and other critical real-time applications.

Working Principle

The TA is a quartz-based oscillator that utilizes a quartz crystal as its frequency control element. The TA is essentially a quartz-based tuning fork, which vibrates at a predetermined frequency established by the resonant frequency of the quartz crystal. The quartz crystal is held in place by a special holder, and is secured by two stainless steel cap screws. The crystal is then connected to a gaging circuit, which includes an oscillator circuit to generate an output frequency signal. This signal is then used to control the frequency of the TA.

The frequency of the TA is controlled by an automatic frequency control circuit, which adjusts the frequency of the output signal based on the frequency of the quartz crystal. This frequency control is accomplished by connecting the quartz crystal to a negative temperature coefficient of resistance (NTCR) element. This NTCR element is connected to a voltage controlled oscillator (VCO) that generates a reference frequency, which is then sent to the oscillator circuit that generates the output signal. The frequency of the output signal is then adjusted according to the temperature variations of the quartz crystal, which causes the frequency of the output signal to remain stable despite temperature variations.

In addition to the automatic frequency control circuit, the TA also contains a phase-locked loop (PLL) circuit that compensates for any drift in the output signal frequency. This PLL circuit uses a reference signal to correct the frequency of the output signal, keeping it within a user-specified tolerance. The PLL circuit also ensures that the output signal remains independent of the environmental conditions and power supply variations.

Finally, the TA contains a startup circuit that provides a stable output frequency when power is first applied. This circuit ensures that the output signal is at a steady frequency before other operations are performed. The startup circuit also ensures that the frequency of the output signal is within a specified tolerance, even if the environmental conditions or power supply variations cause the frequency to change significantly.

The TA is an excellent choice for high precision, frequency and time base applications. Its quartz crystal based frequency control element provides excellent stability and precision for long-term stability requirements. The automatic frequency control circuit ensures that the output frequency remains constant despite environmental variations, while the PLL circuit compensates for any drift in the output signal frequency. The startup circuit ensures that the output frequency is always stable when power is applied, making the TA a great option for various applications requiring stable and precise performance.

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