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通常周期波形采用示波器观察。但当扫描周期太慢时,波形重复频率太低,显示不稳定。超长余辉和数字存储示波器,使用不便,价格太贵。笔者将普通电视机作为显示屏,加一个Z -80单板机和接口,用来显示示波极谱波形,效果良好。 1.视频接口板原理视频接口板原理图如图1所示。
The periodic waveform is usually observed using an oscilloscope. However, when the scan cycle is too slow, the waveform repetition frequency is too low and the display is unstable. Long afterglow and digital storage oscilloscope, the use of inconvenience, the price is too expensive. The author will be an ordinary TV as a display, plus a Z -80 single board machine and interface, oscilloscope oscilloscope waveform used to show good results. 1. Video Interface Board Principle Video interface board schematic shown in Figure 1.