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介绍了一种基于DDS+ADC的综合演示平台。该平台包括用于信号产生的DDS板卡、用于信号采集的ADC板卡、用于缓存和传输的数据板卡以及用于通讯和控制的USB主控板等。综合演示平台配套软件采用Labview开发,拥有集通讯、计算、显示为一体的人机界面。DDS+ADC联合工作的性能为:SNR=70.8dB,SFDR=84.9dB。该平台具有精度高、完全脱离仪器、携带方便、界面友好、采用模块化设计、易于扩展等特点。
An integrated demonstration platform based on DDS + ADC is introduced. The platform includes DDS boards for signal generation, ADC boards for signal acquisition, data boards for buffering and transfer, and USB boards for communications and control. Comprehensive demonstration platform supporting software development using Labview, with communications, computing, display as one of the man-machine interface. The performance of the joint work of DDS + ADC is: SNR = 70.8dB, SFDR = 84.9dB. The platform has high precision, completely out of the instrument, easy to carry, friendly interface, modular design, easy to expand and so on.