| Signal source is a very basic electronic devices, it has been widely used in various fields, because it can produce a variety of available signals, old work must be carried out on spot, but it now can be proceeded in the laboratory smoothly, greatly reducing installation and research progress, the current application areas include communications, radar area, navigation area, measurement, research and teaching and so on. In this thesis, develop the signal source according to the requirements of a research institute; introduce the signal source system design and implementation comprehensive.The system is used to complete the producing and processing of analog signal, the signal source can generate a variety of special signals through test products, determine the testing product qualified by comparing the difference between input and output signals.Paper first introduces the background and requirements of the issues, describes the development of source signal technology in domestic and abroad and the development of virtual instruments, summarizes the overall research of the topic; and then introduced the subject of related technologies and applications;and then expound the hardware and software design of the system detailed: complete hardware circuit design and simulation in Protel; application of Verilog HDL is used in the logic design to complete CPLD logic design in Quartus II; according to the established communication format, design source control panel and block diagram in the Labview8.2 of National Instruments (NI) company, finally, summarize the work of the thesis, and put forward views. |
