说明：  采集卡的模拟数字转换，尺度转换，8个通道采集功能，1kHz的频率，每触发80，为外部触发，高电平触发，可以用施密特。
(Acquisition card analog digital conversion, with scale conversion, the acquisition function of 8 channels, the frequency of 1kHz, the number of each trigger is 80, the trigger for the external trigger, high level trigger, can be used Schmidt.)