BS EN 60793-1-44-2011 光学纤维.测量方法和试验规程.截止波长

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【英文标准名称】:Opticalfibres.Measurementmethodsandtestprocedures.Cut-offwavelength
【原文标准名称】:光学纤维.测量方法和试验规程.截止波长
【标准号】:BSEN60793-1-44-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-07-31
【实施或试行日期】:2011-07-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Cut-offwavelength;Dimensions;Electricalengineering;Fibreoptics;Measurement;Measuringtechniques;Monomodefibres;Opticalwaveguides;Testing;Wavelengths
【摘要】:ThispartofIEC60793establishesuniformrequirementsformeasuringthecut-offwavelengthofsingle-modeopticalfibre,therebyassistingintheinspectionoffibresandcablesforcommercialpurposes.Thisstandardgivesthemethodsformeasuringthecut-offwavelengthoffibreandcableTherearetwomethodsformeasuringcablecut-offwavelength,λcc:·MethodA:usinguncabledfibre;·MethodB:usingcabledfibre.Thereisonlyonemethod(MethodC)formeasuringfibrecut-offwavelength,λc.Thetestmethodinthisstandarddescribesproceduresfordeterminingthecut-offwavelengthofasamplefibreineitheranuncabledcondition(λc)orinacable(λcc).Threedefaultconfigurationsaregivenhere:anydifferentconfigurationwillbegiveninadetailspecification.TheseproceduresapplytoallcategoryBandCfibretypes(seeNormativereferences).Allmethodsrequireareferencemeasurement.Therearetworeference-scantechniques,eitherorbothofwhichmaybeusedwithallmethods:·bend-referencetechnique;·multimode-referencetechniqueusingcategoryA1multimodefibre.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:26P.;A4
【正文语种】:英语

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上一篇: BS EN 61300-3-45-2011 纤维光学互连器件和无源元件.基本试验和测量程序.检查和测量.随机成对复型纤维连接器的衰减
下一篇: BS EN 60461-2011 时间和控制代码

Product Code:SAE J2103
Title:Acoustics--Measurement of Airborne Noise Emitted By Earthmoving Machinery--OperatorS Position--Stationary Testing Condition
Issuing Committee:Sltc - Earth Moving Machinery Sound Level
Scope:This SAE Standard describes a method for determining the noise emitted by earthmoving machinery at the operator's position in terms of the equivalent continuous A-weighted sound pressure level while the machine is in a stationary test condition.This SAE Standard is a special test code for specific types of earthmoving machinery. It is an extension of ISO 6081 which contains the general requirements for many types of machinery and equipment. Specific requirements are provided in this special test code to enable the sound pressure level at the operator's position, with the machine in a stationary test condition, to be determined in a manner which is repeatable. Attachments (bucket, dozer, etc.) for the manufacturer's production version shall be fitted since this is the configuration most likely to exist when the machine is in actual use.This document will enable compliance with noise limits to be determined. It can also be used for evaluation purposes in noice reduction investigations.An additional special test code is given in SAE J2102/ISO 6393. This other special test code shall be used to determine the exterior noise emitted by earthmoving machinery in terms of the A-weighted sound power level while the machine is in a stationary test condition.【英文标准名称】:StandardGuideforCleaningofExteriorDimensionStone,VerticalAndHorizontalSurfaces,NeworExisting
【原文标准名称】:新的或已有的外部规格石料垂直和水平表面清洁的标准指南
【标准号】:ASTMC1515-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:P04
【国际标准分类号】:91_100_15
【页数】:5P;A4
【正文语种】:英语