Design Of Virtual Arbitrary Waveform Generator Based On LabVIEW

Arbitrary Waveform Generator is a modern field test one of the most widely used general-purpose equipment, representing the development direction of the signal source. With the continuous development of computer technology, arbitrary waveform generator rapid changes have taken place, from the traditional analog waveform generator that is today's virtual waveform generator. The emergence of virtual instrument is a revolution in the history of instruments were developed, representing the direction of equipment of the latest developments and trends, is an important area of information technology. The main task of this paper is a combination of virtual instrument technology, arbitrary waveform generator of the research and design.First, the paper introduces the basic theory of virtual instrument technology, including the concept of virtual instruments, composition, classification, and virtual instruments and traditional instruments comparison. On this basis, introduced a virtual instrument system, software architecture, brief description of the instrument driver, VISA and other related technologies.Secondly, the paper carried out arbitrary waveform generator software design. Developed a system as a whole program, this paper, a powerful graphical development platform Virtual Instrument LabVIEW, mainly to complete the design of software systems, using modular design concept, every function of transition from one module to complete. Which mainly include the generation of analog signals and digital signal generation, Analog signals, digital signal modulation, uniform white noise, Gaussian white noise, the actual signal plus noise, as well as hand-painted arbitrary waveform waveform.Finally, the virtual arbitrary waveform generator of the system testing and performance analysis, experimental results to achieve a pre-design requirements...