1746-IC16/1746-IC16 AB樣品壓力： zui大75磅
濕表面材料： 藍(lán)寶石，PFA，KEL-F的Kalrez
通訊協(xié)議： RS-485的4-20mA，MODBUS，以太網(wǎng)TCP
功率： 24VDC
1746-IC16/1746-IC16 AB
1746-IC16/1746-IC16 AB
測(cè)量與分析更加詳細(xì)地規(guī)定了對(duì)于能夠證明過(guò)程的文檔的采集和存儲(chǔ)方法，而且需要對(duì)采集數(shù)據(jù)匯總后進(jìn)行統(tǒng)計(jì)分析，將分析結(jié)果，如偏差、趨勢(shì)、錯(cuò)誤數(shù)目等展示給項(xiàng)目組成員和高層，由他們進(jìn)行項(xiàng)目開(kāi)發(fā)的決策。
項(xiàng)目監(jiān)控是手段，測(cè)量與分析為輔助，需求管理則是zui終目的。結(jié)合圖1，需求在整個(gè)軟件研制周期內(nèi)不可能是一成不變的，是逐步細(xì)化的。用戶需求是*步，隨后軟件研制任務(wù)書(shū)將用戶需求工程化，需求規(guī)格說(shuō)明對(duì)任務(wù)書(shū)的需求細(xì)化，設(shè)計(jì)說(shuō)明對(duì)需求規(guī)格說(shuō)明的需求細(xì)化，軟件源代碼將設(shè)計(jì)說(shuō)明對(duì)應(yīng)到代碼。單元測(cè)試、集成測(cè)試、系統(tǒng)測(cè)試是對(duì)細(xì)化后的需求進(jìn)行回歸。根據(jù)GJB438B-2009中的《軟件需求規(guī)格說(shuō)明》模板，需求包括10類技術(shù)需求和4類非技術(shù)需求。非技術(shù)類需求一般可以得到客觀保證，因此不會(huì)出現(xiàn)大的變動(dòng)，可以暫不納入需求跟蹤矩陣。技術(shù)需求由于項(xiàng)目研制情況會(huì)出現(xiàn)變化，需要納入需求跟蹤矩陣進(jìn)行管理，確保軟件工作產(chǎn)品巾需求能夠進(jìn)行雙向追溯。一旦需求變更狀況時(shí)，及時(shí)記錄并且上報(bào)整個(gè)項(xiàng)目組，獲得項(xiàng)目組的*認(rèn)可。
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