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【英文标准名称】:Aerospaceseries-Fibreopticsystems-Handbook-Testandmeasurement
【原文标准名称】:航空航天系列.纤维光学系统.手册.试验和测量
【标准号】:BSEN4533-002-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-11-30
【实施或试行日期】:2006-11-30
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:航空工程;航空航天运输;航空运输;飞行器;电缆;连接;电线;纤维光学;玻璃纤维电缆;玻璃纤维;检验;手册;测量;多模纤维;光波导;航天运输;系统工程;测试;测试条件
【英文主题词】:
【摘要】:Insertionlossisthemostfrequentmeasurementperformedonafibreopticlink.Theavionicsystemdesignerwillwanttoknoworpredicttheinsertionlossofalinktodetermineitsperformance.Aircraftmanufacturerswillwanttomeasuretheinsertionlossofharnesscomponentsduringassemblyandbeforeitisdeliveredtothecustomertohighlightfaultsandtoprovidearecordoftheperformanceoftheharnessatthebeginningofitslifetime(footprinting).Theinsertionlosswillbemeasuredatintervalsduringthelifetimeoftheaircrafttodiscoveroridentifyfaultsandanygradualdegradationinperformanceoftheharness.Thereis,however,oneproblem.Itisdifficulttocollectreliableandconsistentmeasurementsoftheinsertionlossonanymulti-modefibreopticharnesswherethedistancebetweencomponentsisrelativelysmall(lessthan100metres).Thereasonisthattheinsertionlossofacomponentoraharnessdependsonthepowerdistributionofthelightinjectedintoit.Thisleadstoverylargedifferencesinthemeasuredvalueoftheinsertionloss[1]dependingonthepowerdistributionofthesourceusedtomakethemeasurement.ThisPartofEN4533willexplainthemeasurementproblemandthetechniquesusedtoovercomethemingreaterdetail.
【中国标准分类号】:V25
【国际标准分类号】:49_060
【页数】:34P;A4
【正文语种】:英语


TT-E-527D (NOTICE 1), FEDERAL SPECIFICATION: ENAMEL, ALKYD, LUSTERLESS, LOW VOC CONTENT (26 JUL 1999) [NO S/S DOCUMENT]., TT-E-527D, dated 6 June 1988, is hereby canceled without replacement.