Vxi Bus-based Multi-channel High-speed Data Acquisition Module Developed

Based on the detailed analysis of the technical characteristics of the new products and the requirements of weapon and other tests, the data acquisition module based-on VXIbus with four-channel inputs is realized.The drivers that agree to the codes of IVI are developed.The module can fully exert the technical advantages of VXIbus.The technical puzzles presented and solved in this thesis can be summarized as follows:1. The design principle of VXIbus register-based A16(A24)/D16 device with the ability of interruption is presented.2 . The 12Bit, 6Msa/s data acquisition and the 128M-sample-buffered memory with SDRAM are realized.3. The shared devices (SDRAM and AD) are fast arbitrated in hardware and the shared devices' access conflicts are resolved, so the continuous data acquisition is realized.3. The drivers of BITS ATTRIBUTE INSTRUMENTS which agree to IVI are presented and realized. This kind of drivers can highly improve the ability of instruments.