Research Of Segmented Three-dimensional Digital Storage Oscilloscope

With the technology of high-capacity memory and the mapping,display technologies of three-dimensional waveform useing in the field of time domain measurement, greatly improving the digital oscilloscope’s ability of capture and observation anomalous signals. However, the use of existing storage and mapping technologies are either missing the original waveform data after three-dimensional mapping, or have low waveform capture rate in deep memory; the existing display technique can not adjust the display method according to the user’s needs, just use simple display method,so it is not conducive to capturing anomalous signals. In this paper, for above storage and mapping problems utilize the single capture single mapping three-dimensional imaging technology and segmented memory centralized mapping three-dimensional imaging technology to achieve high waveform capture rate under deep memory and quantitative analysis of waveform details; for above waveform display problems use brightness adjustment and correction technology to observation and analysis waveform image details more intuitive、efficient.This issue implements waveform storage,mapping and display technologies such as segmented memory centralized mapping technology and waveform brightness adjustment and correction technology and so on, on the basis of private enterprise cooperation. The project simultaneously achieve the above functions and exceed the requirements of it,has 500 MHz analog bandwidth, 4GSPS real-time sample rate, the largest single-channel has 256 Mpts memory depth and 200,000 wfms / s waveform capture rate and so on, lay the foundation for enhancing system performance and improving system function. This article will elaborate as the following order :1. Analyze and theoretically argument the two main existing waveform storage, mapping three-dimensional imaging techniques; deeply analyze and theoretically argument display method for three-dimensional waveform; come to the overall system design of the present digital three-dimensional oscilloscope;2. Waveform storage, mapping system design, including large-capacity memory design, segmented memory centralized mapping three-dimensional imaging function design and waveform general store, three-dimensional mapping function design;3. Three-dimensional waveform display system design, including the realization of brightness adjustment technology and the realization of the parallel mapping vector display method and window display method;4. Finally, complete the debug and optimization of the memory map and display technology function module and propose of the future research plans and prospects.