442M-22LFT

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442M-22LFT is a type of frequency counter which provides higher accuracy and stability for frequency measurement. It is popular in various fields such as communication testing, biomedical and consumer electronics. It is widely used in Research and Development, production, service and acceptance tests for radios, computers, microwave ovens, and other consumer electronics.

The working principle of 442M-22LFT is based on a phase locked loop (PLL) technique that uses two separate but coherent signals to measure frequency. It works by locking the output signal to the input signal, enabling the device to accurately measure the frequency of the input signal. The input signal is used to drive an oscillator, while a counter is used to count the number of oscillations in the output signal. The counter then converts the vibrations into a numerical value, which is the measured frequency of the input signal.

When the input signal frequency changes, the PLL will adjust the output signal frequency accordingly to keep it in sync. This is because the input signal is used to drive the oscillator and the output signal is tuned to the input signal frequency. This mechanism allows 442M-22LFT to accurately measure frequency under any conditions. Furthermore, the device also supports measuring frequency wide range, up to 40GHz with a minimum resolution of 1Hz.

The main features of 442M-22LFT include high accuracy, long-term stability, simple operation, and signal source processing (SSP) function. Its high accuracy is verified by the relative accuracy of +-1‰ in the range of 10Hz to 10MHz. The long-term stability is ensured by the high-charging stability of the device. Due to its simplicity, it can be used without further programming, and it can be used in any standard test environment. The SSP function improves the measurement accuracy of the signal source under the condition of purely electromagnetic component or electronic component.

442M-22LFT is widely used in various fields. In research and development, production, service and acceptance tests, the device can be used to measure the frequency of various radio and television equipments, such as receivers, transmitters, airborne equipments, digital TV equipments, computers and other digital devices. It can also be used in the electromagnetic compatibility test of a product, radio remote monitoring equipment, direction finding, and medical electronic equipment.

Additionally, 442M-22LFT is used in various industrial processes. In the measurement of electric motors, compressors, and drive systems, it is used to measure the rotation speed of the motor, fan, or pump, as well as the angular velocity of the cam. It can also be used in air-conditioning and turbine flowmeter measurements, process automation systems, and automation control systems.

Overall, 442M-22LFT is an ideal frequency counter for use in various research and development, production, service, and acceptance test applications. Its combination of high accuracy and stability makes it suitable for a variety of uses, from measuring frequency in consumer electronics to measuring speed in industrial machines.

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