Channel B设置成DC耦合就可以了。仿真软件计算错误，原因在help里：Input Coupling (AC, 0, DC, and -)—With AC coupling, only the AC component of a signal is displayed. AC coupling has the effect of placing a capacitor in series with the oscilloscope’s probe. As on a real oscilloscope using AC coupling, the first cycle displayed is inaccurate. Once the signal’s DC component has been calculated and eliminated during the first cycle, the waveforms will be accurate.
楼主
标题置顶
标题高亮
