说明：  系统，他主要完成对某设备上交流电源、直流电源、模拟电压、开关信号、脉冲信号等各种信号的采集工作。完成对上述信号的如下特征
(system, he completed a pair of AC power equipment, DC power supply, analog voltage, switching signals pulse various signals in the collection. This signals the completion of the following characteristics)