Based on the charaeteristics of output frequency of a certain type of military power station. the paper designed a frequency conversion measurement method based on the counter and D / A converter, with the analysis of the error count from the counter, crystal frequency, chip conversion accuracy and the precision of the computer acquisition, test accuracy is analyzed. Ultimately, an accurate measurement of dynamic frequency of the power station was achieved, which reached a good result.%针对某型军用电站输出频率的特点,本文设计了一种基于计数器与D/A转换器将结合的频率转换测频法,并从计数器计数误差、晶振频率、芯片转换精度、计算机采集精度等四个主要因素对测试精度进行了分析,最终较为精确地实现了该电站动态频率的测量,达到了较好的效果.
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