The purpose of crystal vibration performance parameter test is to ensure that the crystal vibration meets the design requirements by evaluating each index. This article describes how to test the following key performance parameters:

01, load capacitance test

Load capacitance is the capacitance load of crystal oscillator under specific circuit conditions. When testing the load capacitance, it is necessary to use the LCR meter to measure the capacitance value at both ends of the crystal oscillator to ensure that it conforms to the design specification.

02. Driving level test

Drive level refers to the minimum power supply voltage required by the crystal oscillator in the working state. Oscilloscope and power supply are used to test the driving level, observe whether the waveform is stable, and ensure the normal operation of crystal vibration.

03. Frequency stability test

Frequency stability refers to the degree of frequency variation of crystal oscillator under different temperature, voltage and load conditions. Test with frequency meter and temperature control equipment to ensure stable frequency output of crystal oscillator under various working conditions.

04, phase noise test

Phase noise refers to the phase error in the output frequency of crystal oscillator. Phase noise tester was used to evaluate the short-term stability and anti-interference ability of crystal vibration.

05. Quality factor test

Quality factor is an index to measure the energy loss of crystal vibration. Network analyzer is used to measure the resonant frequency and bandwidth of crystal vibration, calculate the quality factor, and evaluate the energy transfer efficiency of crystal vibration. Through the introduction of this paper, we understand the key indicators and practical testing methods of crystal vibration performance parameters. Comprehensive testing of these performance parameters helps to ensure the stability and reliability of crystal oscillators in electronic systems. Mastering the testing skills of various performance parameters is helpful to improve the success rate of electronic design and reduce the project risk.

06, amplitude test

Amplitude is the peak - peak of the crystal oscillator output signal. The oscilloscope is used to measure the peak of the output waveform to ensure that the amplitude meets the design requirements. Amplitude test is very important to verify the driving ability and anti-jamming performance of crystal oscillator.

07, vibration time test

Starting time is the time required for crystal vibration from no signal state to stable working state. Oscilloscope is used to observe the waveform change during the crystal vibration starting process and measure the starting time. Fast starting time helps improve the response speed and performance of the system.

08, pressure test

Pressure test is to evaluate the reliability of crystal vibration under high pressure conditions. The special voltage is applied to the crystal oscillator by the voltage test equipment to observe its working state. The pressure test helps to evaluate the stability and reliability of crystal oscillators in harsh environments.

09, temperature test

Temperature test is to evaluate the performance of crystal vibration under different temperature conditions. The temperature test chamber was used to test the crystal vibration at high and low temperature, and the frequency, phase noise and other performance parameters were observed. Temperature testing helps to ensure the reliability of crystal oscillators in various temperature environments.

Through the above content, we have a comprehensive understanding of crystal vibration performance parameter testing. From frequency and phase noise to amplitude and start time to pressure and temperature resistance, each test method is critical to evaluating the performance and reliability of crystal oscillators. Mastering these testing techniques will help to improve the success rate of electronic design and reduce project risks, thus ensuring the stability and reliability of electronic systems.

As a hardware engineer, understanding the crystal vibration performance parameter test method is the key to improve the skill level. I hope this article will provide you with valuable reference and help you quickly find solutions when you encounter crystal vibration related problems in the process of hardware development. Please continue to pay attention to our column, we will bring you more crystal vibration related knowledge and skills.