【正文】
nt field the new 。Instrument.Ⅰ.IntroductionWith modern science and technology and the development of industrial production, the measurement of a higher , realtime, accurate,automatic measurement has bee the mainstream of the development of modern measurement be said that there can be no measurement signal analysis and processing, access to information to bee a talk, based on the information on the information technology and puter technology has bee a source of , with its submeasurement technology many advantages to bee the protagonist of modern measurement technology in information acquisition and industrial control does not play alternative century, is based on the LSI important period of development, it also brings electronic measuring instrument technology LSI large number of applications, making the modern electronic measuring instruments are smaller, more prehensive, higher reliability, lower power , puter technology and software technology for the electronic measurement essentially leap – virtual intended to produce the instrument, made a great contribution.Ⅱ.Recent development results development of digital instrumentsIn recent years, as DSP(digital signal processing)technology, the rapid development of a variety of outstanding performance DSP integrated chips are emerging, digital instruments to get a new example, digital oscilloscope, digital modulation devices, digital function generator, arbitrary waveform generators, digital frequency counter and many other Domain Analyzer successful researchModulation Domain testing techniques in the frequency domain and frequency domain has been developed very mature late 20th century the emergence of a new type of measurement Test technologies that known as the “three field” testing domain test is to measure the input signal varies over time the frequency value, the displayed graphical representation of the signal generated by the modulation domain, the frequency value of the signal versus Domain testing technology is an emerging technology very important and difficult and very large test techniques, depending on the science and technology and electronic equipment rapid method is very suitable for measuring the timing signal, phase or frequencycoded signal is coded Domain TestingTechnology Surgery appears bound to numerous test problems and make new have proved that modulation domain analysis techniques, in an increasingly more applications bee an indispensable testing technology, especially in the field of military electronic test more of its bus technology has made significant progressVXI bus technology is the twentieth century the emergence of a new bus first appeared in the United States, used in the United States Air Military electronic measuring and GPIB bus to the VME bus are bined to form a new standard for modular instrumentation platform that can meet the needs of future instrumentation, electronic measurement instruments and systems to make step into a new period of bus is a new industry standard interface bus 121 is a pletely open, multivendor equipment to adapt products(modules, plugin)industry introduction of this standard there are three reasons: First, to adapt to technical requirements of the development, the second is the lack of multivendor instrument connectivity, three is the military39。memory, hard disk storage capacity and speed。40000με,濾波頻率 設置為20Hz,界面如圖3;,選擇“自動校準”,設置界面如圖4所示;。實驗完