脉冲信号发生器：采用DDS技术实现脉冲信号的周期、脉冲宽度、幅值的数控调节。通过单片机与FPGA的并行通信技术将频率控制字及矩形脉冲数据传送给FPGA的双口RAM。模拟输出通道则将信号通过100MHz、8位D/A转换器将波形数据转换成模拟脉冲信号，最后通过高速运放构成的放大器放大，实现幅度连续可调。-The pulse signal generator: using the DDS technology to achieve the pulse signal cycles, pulse width and amplitude of the numerical control regulation. Through the microcontroller and FPGA parallel communications will frequency control characters and rectangular pulse data to the FPGA double mouth RAM. Analog output channel will signal through 100MHz, eight D/A converter will waveforms converted into analog pulse signal, finally through high-speed op-amp constitute the amplifier amplification, realize the continuous adjustable range.