This paper mainly talks about the functional characteristics of the frequency counter, explains the main test functions of the frequency counter, and illustrates the functional characteristics of the application place of the frequency counter, so that users can make a clear choice of the frequency counters for the frequency test of their applications.

Frequency counter is an electronic measuring instrument specially designed for measuring frequency signals. It is the first test applied to the production line in traditional manufacturing. A frequency counter is a digital measuring instrument for precise measurement of signal parameters. It measures frequency, time interval, phase and characteristics of counting events. Frequency counters and other similar products provide high precision and analytical ability for R & D, provide high efficiency for mass production and provide low cost and portability for maintenance.

In the market, the most commonly used equipment for measuring frequency is oscilloscope, spectrum analyzer and frequency counter. Among them, the oscilloscope has relatively low relative error in measuring frequency, and the error is relatively large. Three. The spectrum analyzer can accurately measure the frequency and display the spectrum of the measured signal, and the relative speed of the single relative measurement is slower, so that the frequency of the measured frequency can not be tracked in real time and quickly. Frequency meter can quickly and accurately capture the change of the frequency of the measured signal. In comparison, the frequency meter has a very wide range of applications than the other two.

Frequency counters can quickly capture the change of oscillator output frequency in traditional manufacturing enterprises, and users can quickly find fault crystal products by using frequency meter to ensure product quality.Frequency counters are used in calibration experiments, and frequency counters are used to calibrate local oscillators of various electronic measuring devices. In the wireless communication test of frequency counter, frequency meter can be used to calibrate the master clock of radio communication base station, and also can be used to analyze the frequency hopping signal and frequency modulation signal of radio station.

Frequency counter is a high precision frequency counter with special frequency measurement. At present, the measurement range, accuracy, measurement function and stability of the SYN5637 type high precision frequency counter are greatly improved compared with the traditional frequency meter. The standard is based on the constant temperature crystal time base, and the resolution of frequency measurement is up to 12 bits / sec.

With the continuous improvement of domestic time and frequency technology, frequency counters are also widely used in dog production, scientific research and metrology, radar, electronic information equipment and communication field. Xi'an is a professional company in the field of time and frequency. Through years of R & D and production of time and frequency technology, we have independently developed different frequency and frequency testing equipment, including frequency counters, general counters, electronic parking timer verification devices, time interval measuring devices, etc.

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