摘要
为观测同一电路不同点电信号的频率、幅值、相位等关系，需要多踪示波器同时显示多个信号波形。由线性运放、施密特触发器、十进制计数/脉冲分配器、模拟开关等能够构成单-四踪示波器转换系统。用波形变换与分频的方法获得触发信号，用模拟开关控制信号的切换，用线性运放对信号进行叠加与放大，再结合通用示波器，实现信号的多波形显示与观测，为电子测量提供了一种便捷、实用的方法。
In order to observe the relationship between frequency, amplitude and phase of the electrU signals at different nodes in the same circuit, it needs multi-signal oscilloscope to simultaneously display the several signal waveforms. The conversion sys-tem of single-four trace oscilloscope can be composed of the linear OpAmp, Decade Counter/Divider and analog Switch. With the method of waveform transformation and frequency division to obtain the trigger signal, analog switch to control signal switch-ing, linear OpAmp to stack and amplify the signal, combined with general Oscilloscope can realize the observation on multi-waveform so as to provide a convenient and useful method for electronU measurement.
作者
宋卫星
SONG Wei-xing （School of Physics and Telecommunication Engineering, Shaanxi University of Technology, Hanzhong 723000, China）
出处
《电脑知识与技术》
2013年第10期6437-6440,6445,共5页
Computer Knowledge and Technology
关键词
施密特触发器
模拟开关
分频
Schmitt Trigger
Analog Switch
Frequency Division
