The technology of direct digital synthesis is applied to realize signal source with the frequency range from 1Hz~5MHz, and the minimum frequency absolution to 0.2Hz.

• 信号源采用直接数字合成原理实现；频率范围从1Hz-5MHz；最小分辨率为0.；2Hz。 高速数据采集使用12位A/D转换器；最高采样频率40MHz。