2008•Journal of Qingdao University of Science and TechnologyRequires access

The Design of a Virtual Oscilloscope Based on NI Daq

Yun Liu

Abstract

A virtual oscilloscope design is presented based on a software structure by multithread operation.The trigger in oscilloscope is introduced in both software and hardware.The accuracy of signal processing for virtual oscilloscope is improved by software filtering and the original signal is reconstructed using Linear Interpolation Algorithm.Compared with a traditional oscilloscope,it can be seen that a virtual oscilloscope is more flexible and updated faster,furthermore,it has advantages of deeper storage,faster spectrum analysis and resource share in higher speed.

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Available abstract

Key concepts: Oscilloscope, Digital storage oscilloscope, Software, Computer science, Computer hardware, SIGNAL (programming language), Interpolation (computer graphics), Signal processing