【摘要】 示波器是一种用途广泛的电子测量仪器,在很多科学研究中需要使用示波器,所以示波器使用的实验也是大学物理实验课中基本实验之一,要求学生能熟练掌握示波器的使用方法。示波器能观察电信号的波形,也能测量电信号幅度、周期、频率等参数,双踪示波器还可以通过波形叠加展开多种测量。本文就是针对示波器测量频率的3种方法的探讨,比较它们各自的优缺点,拓展学生的思路,更好培养学生的探索精神。更多还原

【Abstract】 The oscilloscope is a versatile electronic measuring instruments,in many scientific research requires the use of an oscilloscope,oscilloscope experimental use is one of our basic experimental college physics experiment lesson so students can master the use of the oscilloscope. Oscilloscope to observe the waveform of the electrical signal,the electrical signal can also measure the amplitude,period,frequency and other parameters,dual trace oscilloscope can also be measured by a variety of superimposed expanded waveform. This article is for the three methods of measuring frequency by oscilloscope discussion,compare their advantages and disadvantages,to expand the thinking of students,better students of the spirit of exploration.更多还原