Centering on two pieces of Spartan-3E series FPGA chip XC3S500E，the system uses ADC MAX12529 for high-speed synchronous sampling and DAC902 for real-time signal generating. Two pieces of FPGA can communicate with each other by interconnecting the 8-bit GPIO, or by the sharing of high-speed dual-port RAM. Its configuration circuits are independent, and it constitutes a high-performance digital system with a FLASH memory, respectively.