Research On 20M Virtual Oscilloscope Based On TMS320VC5416

The virtual oscilloscope is a newly emerged intelligent instrument along with the development of computer technology and measurement technology. In addition to all the common functions of a traditional oscilloscope, it makes full use of computer's resources and makes such functions as data storage and analyses possible, which were very difficult to realize on a traditional one. Therefore it is of much practical importance to carry out theoretical and experimental research on virtual oscilloscopes.The dissertation developed a virtual oscilloscope in way of PC-DAQ method, in which TLC5540 from Texas Instruments Corporation was used for analogy to digital conversion, TMS320VC5416 was used for logic control and Data storing, UART interface device TL16C752 was used for data transfer from data acquisition board to PC, and LabVIEW was utilized as software platform. The virtual oscilloscope offered such advantages as relatively low cost, function redefinitionable by the user, updating and expending by PC software and DSP software, good reliability, transplantation and easy maintenance.