摘要
本系统以DSP2812和CPLD相结合,采用DDS(DDFS,直接频率数字频率合成)技术设计的多路高精度信号源,它可以根据用户设定的电流、电压参数,实现12路模拟量的输出。其模拟量的基本波形为:正弦波、三角波、方波和用户自定义的波形,同时可根据需要实现20次以内任意次谐波的迭加。
This system is composed of DSP2812 and CPLD, and adopts DDS （DDFS, direct frequency digit frequency synthesis） technique to design multi-channel high-precision signal source. It can produce 12-channel analog quantity output based on the current and voltage parame- ters set. The analog waveforms contain sine wave, triangular wave, square wave and user - defined wave, simultaneously, it can output any harmonics overlying together within 20 times according to the demand.
出处
《世界科技研究与发展》
CSCD
2010年第3期317-320,617,共4页
World Sci-Tech R&D
