Microprocessor-Based Multichannel Transient Recorder

Data acquisition of fast time varying transient phenomena relevant to structural dynamics and aerodynamic wind tunnel testing pose a number of problems such as speed, retrieval of data for analysis, number of channels, etc. To overcome these limitations, a software-based high-speed Multichannel Transient Data Acquisition system has been designed and developed. This system is built around the Burr-Brown SDM-853 Module. The data are stored in 16-kbyte MOS RAM memory. The stored data are retrieved by a low-speed system clock through a digital-to-analog converter (DAC) onto an X-Y/t plotter for hard copy.