In order to meet the specific requirements of signal generator, such as generation of various signals, stable operation and low cost, the GW48 type SoPC development system which takes Nios as a control core is adopted to design the arbitrary waveform DDS signal source whose parameters is adjustable. The paper elaborates the system hardware and software design. The whole system simulation results meet design requirements. The system has convenient design scheme, high integration, flexible expansion and perfect function.%为了解决信号发生器的一些具体问题,如需要它能产生多种信号、工作稳定、成本低等,因此采用GW48型SoPC开发系统,以Nios软核为控制核心,来实现参数可调的任意波形DDS信号源.重点阐述系统硬件方案、软件设计,并对整个系统进行了仿真,仿真结果符合设计要求,具有方案设计便捷、集成度高、扩展灵活和功能全面等特点.
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