Scpi standard commands for programmable instruments scpi可程式儀器標準指令
Standard commands for programmable instruments scpi 可程式儀器標準指令scpi
Virtual instrument describes the combination of programmable instruments with general-purpose pcs 虛擬儀器描述了可編程儀器和通用計算機的結(jié)合。
Labview application environment is adopted for implementation of local instrument control . programmable instruments such as function generator, multi-meters, and oscilloscopes have been linked to the computer through general purpose interface bus ( gpib ) 采用labview應(yīng)用程序開發(fā)環(huán)境對本地儀器進行控制,并通過gpib接口將可程控儀器,例如:函數(shù)信號發(fā)生器、數(shù)字萬用表和示波器等設(shè)備連接到計算機上。
In this disseration the author researched the testing of gsm mobile telephone of the wireless instrument test and carried out it . the work that i shoud do is acquire the testing content 、 standard and method of test of the gsm mobile telephone, then write the driver program of the cmu200 . first acquaint the communication system of gsm; second introuced and analysized the technology of the software and hardware of control the programmable instrument, which include ieee 488 ( gpib ) standard bus 、 scpi ( standard commands for programmable ) and visa ( virtual instrument system architecture ); third reaserach the technology of software, it employs visual c + + 6.0 as application development platform because of its powerful function, universality and programming and employs com module because of its characteristic 、 superiority; the last ascertain the testing item and its standard 、 mehtod through searching the principle of gsm mobile and its testing criterion and select the programble instrment for testing according to the mobile telephone demands, which include cmu200 ( universal radio communication tester ) 、 e4445a ( spectrum analyzer ) 、 e4438c ( signal generator ), all of this build the platform of testing . i realize the automatic testing of gsm mobile telephone by using com module and visa 、 scpi 論文中首先了解了gsm通信系統(tǒng)及其關(guān)鍵技術(shù);再者研究分析了可編程儀器控制的軟硬件技術(shù),包括ieee488(gpib)標準總線、scpi(standardcommandsforprogrammableinstruments可編程儀器標準命令)和visa(virtualinstrumentsystemarchitecture虛擬儀器軟件架構(gòu))為對可編程儀器進行驅(qū)動編程打下基礎(chǔ);第三步研究了軟件實現(xiàn)技術(shù),對組件的優(yōu)勢和com的特點進行了分析確定采用com組件技術(shù)來完成驅(qū)動模塊;最后根據(jù)移動臺測試要求選擇可編程測量儀器cmu200綜測儀、e4445a頻譜儀、e4438c信號源和一臺測量控制計算機搭建起了測試平臺,研讀可編程儀器cmu200綜測儀的scpi命令和visa(虛擬儀器軟件架構(gòu)),根據(jù)gsm移動臺測試方法在vc開發(fā)平臺下采用com組件形式完成對cmu200的驅(qū)動編程從而實現(xiàn)對gsm移動臺的自動測試。