通过增加脉搏波采集电路和信号处理电路，扩展短余辉电子示波器的测量功能。
The measuring function of short persistence oscillograph can be extended by adding pulse wave collecting circuit and signal processing circuit.
指端脉搏波实验由光电传感器、生物信号放大器和示波器 3部分组成 ，叙述了各部分的工作原理和实验方法 。
The experiment consists of photoelectric sensor, bio-signals amplifier and oscillograph, their working principle and experimental method are introduced.
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