8281B 0081000

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The 8281B 0081000 is a master clock that is primarily used in the time synchronization of digital systems. It is a quartz oscillator-based device that is capable of being used in applications such as satellite communication, digital communication, and other data communication applications that require a high level of accuracy and time synchronization. The 8281B 0081000 can be used for both local area network (LAN) synchronization and wide area network (WAN) synchronization. It is able to provide high-precision timing accuracy while providing good jitter performance.

The 8281B 0081000 is a pulse code modulation (PCM) based master clock that uses a quartz oscillator to generate an accurate frequency signal. This signal is then transmitted over a LAN or WAN. The 8281B 0081000 contains a built-in phase locked loop (PLL) circuit that is used to lock the frequency signal. The PLL uses the PCM signal as a reference signal, and the output frequency of the PLL is adjusted based on the signal\'s frequency and the phase difference between the reference signal and the PLL output. By adjusting the output frequency of the PLL, the 8281B 0081000 is able to maintain a precise timing accuracy and jitter performance for the transmitted signal.

The 8281B 0081000 has an integrated digital-to-analog converter (DAC) and analog-to-digital converter (ADC). The DAC is used to convert the digital signal from the PCM source into an analog signal for transmission. The ADC is used to convert the incoming analog signal from the LAN or WAN back into a digital signal. The DAC and ADC are used to ensure that the proper amount of signal distortion does not occur due to the distance or impedance of the transmission line. Furthermore, the ADCs also allow the 8281B 0081000 to be coupled with other master clocks that are based on different PCM formats. This ensures that the 8281B 0081000 can be synchronized to other clocks that are designed to be used in the same environment.

The 8281B 0081000 has an integrated jitter filter that is used to decrease the amount of jitter that is present in the signal. This jitter filter is implemented as a two-stage filter that is located between the DAC and ADC. The first stage of the filter is a digital low-pass filter that is used to reduce high-frequency components in the analog signal. The second stage is an analog high-pass filter that is used to reject any frequencies that are outside of the expected range. The jitter filter provides a very low level of jitter performance for the output signal.

The 8281B 0081000 has an integrated voltage regulator that is used to maintain an optimum voltage level across the device. This allows the device to perform reliably and ensures that the signal remains in the expected range. Furthermore, the 8281B 0081000 has an on-board temperature sensor that can be used to detect any changes in temperature. This allows the device to be used in applications where temperatures may fluctuate frequently.

In summary, the 8281B 0081000 is a quartz oscillator-based master clock that is primarily used in the time synchronization of digital systems. It is capable of providing a high degree of accuracy and jitter performance for digital signals. It contains an integrated DAC/ADC and jitter filter, as well as an integrated voltage regulator and temperature sensor. These features make the 8281B 0081000 a reliable and precise master clock solution for LAN and WAN applications.

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