Modern Testing Technology Measurement And Control Platform - Signal Conditioning Modules

The technology of electronic testing based on virtual instrument is the tendency of modern testing technology. This thesis mainly describes a tesing and consoling kit based on NI' s special virtual instrument software development kit-LabWindows/CVI,aming at traditional testing device' s limitation such as high cost of hardware,complexity of construct,singleness of function etc. The tesing and consoling kit can condition the signal intermixed with interfere noise and deal with the collected datum through common signal conditioning(amplification,isolation multiplex filtering) -,software calibration digital filtering etc to analyse signal in time and frequency domain. The developed module are the arbitrary waveform generator based on DOS ( Direct Digital Synthesizer)technology as a signal source of testing system and the common testing device such as virtual spectrum analyzer-,virtual digital storage oscilloscopes virtual frequency counter etc.