High-speed data acquisition system based on PCI9656

The design of a high-speed data acquisition and real-time storage system based on PCI-X bus was described in this paper. To achieve high-speed data transmission, the PCI9656 was used as PCI bus master I/O accelerator. An IA server that supported 64bit/66MHz PCI-X and SCSI RAID was adopted as the computer platform, to ensure high-speed real-time data storage. The time control of data acquisition and transmission was realized by programmable logic device. This system had been successfully applied to the echo signal acquisition of a radar system. The continuous radar echo acquisition and storage was implemented, with 100 MSPS sampling rate, 10 bit quantization precision, and signal distortion less than 0.2%, which met the requirements of high-speed acquisition and real-time storage.