Design And Realization Of Test System For Shortwave Receiver Based On Virtual Instrument

Virtual Instrument is a fire-new concept virtual, combined tightly by modem computer technology and instrument technology. Essentially, it is a computer instrument system, which simulates control panel of traditional instruments by computers' display devices, expresses measure results by many formats, completes computation, analysis and progress of signal by computers' software function, fulfills data acquisition, measurement and signal condition by I/O interface devices, and achieves various test functions finally.This design regards development actuality of measurement and test technique of radio installations test system as a background, designs and realizes shortwave receiver test system based on virtual instrument. The system can automatically test each typical unit of shortwave receiver one by one, completes fault location, includes manually test function, integrate many common instruments, has similar interface with traditional instruments. For satisfying different test demand, user can manually test by many instruments synchronously. Besides, the system can generate a report of test results.The paper extracts the overall plan of the test system based on analysis to constitution method of virtual instrument. The design adopts modularization method, completes hardware lectotype and software modularization design of the system. At last, the design completes system integration based on modularization design, and tests the shortwave receiver, proves the function and performance of the test system.