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本文阐述了一种高速数据采集板的原理及硬件电路，此板符合STD总线标准；采样字长为8位；采样速率为20MSPS。最后介绍此板在高压电网过电压在线监测装置中的应用。
This paper describes the principle and hardware circuit of a high-speed data acquisition board, which complies with the STD bus standard; the sampling word length is 8 bits; the sampling rate is 20MSPS. Finally, the application of this board in the overvoltage on-line monitoring device of high voltage power grid is introduced.