基于EDA软件的单-四踪示波器转换系统研究

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。

Study on Conversion System of Single-four Trace Oscilloscope Based on EDA Software

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.