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本文介绍一种用 TP801A 单板机加适当接口,测试网络频率特性的方法,可作为微型计算机在电子测量领域中应用的一个实例。其测试频率为15Hz～4kHz,相位为±(5°～175°)。测量误差值:相位≤1.4°,幅值≤4％。此测试方法简便、直观、准确,可代替复杂昂贵的测试仪器。本系统可用在工业控制信号及低频无线电信号的测量中,也可用在基础课的实验教学中。若采用更高速的uc及数据处理功能强的计算机组成测试系统,测试的频率将会更高,功能也将大大增强。
This article describes a TP801A single-board machine with the appropriate interface to test the network frequency characteristics of the method can be used as a micro-computer in the field of electronic measurement of an example. The test frequency of 15Hz ~ 4kHz, the phase is ± (5 ° ~ 175 °). Measurement error: phase ≤ 1.4 °, amplitude ≤ 4%. This test method is simple, intuitive and accurate, can replace the complex and expensive test equipment. The system can be used in the measurement of industrial control signals and low-frequency radio signals can also be used in the experimental teaching of basic courses. If the use of higher-speed uc and data processing capabilities of a strong computer test system, the test frequency will be higher, the function will be greatly enhanced.