Software Design for Virtual Digital Storage Oscilloscope Based on PXI Bus

In this paper, an implementation of a virtual digital storage oscilloscope (DSO) based on PXI bus is presented. The principle of DSO data acquisition board and the DSO driver developing are introduced,and then, the soft panel designed in LabWindows/CVI platform is illustrated, finally, problems of data acquisition, data processing, waveform and measurement results display under various control commands and status are discussed.