Handheld Digital Oscilloscope In The Dsp-based Design And Realization

As a new development in the field of electronic oscilloscopes a hand-held digital oscilloscope is a truly integrated test tool, with digital storage oscilloscope (DSO), multimeter and digital ondometer in one easy-to-use instrument. The design and implementation of a kind of hand-held digital oscilloscope system was discussed in detailed in the dissertation, which featured small size and powerful functions. The system discussed in the dissertation has the compact architecture built with DSP (digital signal processor), FPGA (field programmable gate array), and RAM. By using LCD (liquid crystal display) it provides the friendly menu interface for user's convenient operation. The embedded processor DSP56805 of Motorola Inc. controls the whole system, and at the same time it functions data processing. The FPGA of Xilinx Inc. works as a important part, with which many functional modules, including a controller of LCD display, a FIFO (first in first out) memory, a controller of sampling clock, and so on, were implemented. The dissertation emphasized on the driver part of the software of the system. Following the discussion of the design and implementation of the software, the debug methods and test results of the whole system were provided, with which some basic functions of the system were verified.