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无线电工业产品进行周期性试验时一定有振动试验项目,以检验产品结构的机械强度和运用中的可靠性.工厂试验室中多以振动机来进行振动试验.在使用和调整振动机中感到振动频率和波型的校准是个麻烦的问题.现在可用于频率校准的常用仪器不外是转速计或者闪光测频仪.然而,转速计校准频率的误差大,闪光测频
There must be a vibration test item for periodic testing of radio industrial products in order to check the mechanical strength of the product structure and the reliability of its operation.Most vibration testing machines are used in factory laboratories to vibrate during use and adjustment of vibrators Calibration of the frequency and the wave pattern is a troublesome issue, and now the commonly used instruments that can be used for frequency calibration are no more than tachometers or flash frequency detectors. However, the error of the tachometer calibration frequency is large and the flash frequency measurement