SJ/T 11313-2005 家庭主网接口一致性测试规范
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基本信息
| 标准名称： | 家庭主网接口一致性测试规范 |
| 发布日期： | 2005-06-28 |
| 实施日期： | 2005-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： |
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前言
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目录
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引用标准
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所属分类： 电子元器件与信息技术 计算机 系统设备接口 信息技术 办公机械设备 接口和互连设备
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【英文标准名称】:Opticalfibres-Part1-42:Measurementmethodsandtestprocedures-Chromaticdispersion
【原文标准名称】:光纤.第1-42部分:测量方法和试验程序.色散
【标准号】:IEC60793-1-42-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆;色散;尺寸;电气工程;包络(线)时延;光纤;玻璃纤维电缆;玻璃纤维;纤维梯度;测量;测量技术;单模纤维;多模纤维;光波导;光电子学;性能;规范(验收);测试;测试装置
【英文主题词】:Cables;Chromaticdispersion;Dimensions;Dispersion;Dispersion(waves);Electricalengineering;Envelopedelay;Fibreoptics;Glassfibrecables;Glassfibres;Gradientfibres;Measurement;Measuringtechniques;Monomodefibres;Multimodefibres;Opticalwaveguides;Optoelectronics;Properties;Specification(approval);Testing;Testingdevices
【摘要】:ThispartofIEC60793establishesuniformrequirementsformeasuringthechromaticdispersionofopticalfibre,therebyassistingintheinspectionoffibresandcablesforcommercialpurposes.Chromaticdispersionvarieswithwavelength.Somemethodsandimplementationsmeasurethegroupdelayasafunctionofwavelengthandthechromaticdispersionanddispersionslopearededucedfromthederivatives(withrespecttowavelength)ofthisdata.Thisdifferentiationismostoftendoneafterthedataarefittedtoamathematicalmodel.Otherimplementationscanallowdirectmeasurement(ofthechromaticdispersion)ateachoftherequiredwavelengths.Forsomecategoriesoffibre,thechromaticdispersionattributesarespecifiedwiththeparametersofaspecificmodel.Inthesecases,therelevantrecommendationorstandarddefinesthemodelappropriateforthedefinitionofthespecifiedparameters,Forotherfibrecategories,thedispersionisspecifiedtobewithinagivenrangeforoneormorespecifiedwavelengthintervals.Inthelattercase,eitherdirectmeasurementsmaybemadeatthewavelengthextremesorsomefittingmodelmaybeusedtoalloweithergroupdelaymeasurementmethodsorimplementationsorstorageofareducedsetofparametersthatmaybeusedtocalculatetheinterpolateddispersionforparticularwavelengthswhichmaynothaveactualdirectmeasurementvalues.AnnexEgivesageneraldescriptionofchromaticdispersionfittingandoutlinesanumberoffittingequationssuitableforusewithanyofthemeasurementmethodsorfibrecategories.Thisstandardgivesfourmethodsformeasuringchromaticdispersion:-methodA:phaseshift;-methodB:spectralgroupdelayinthetimedomain;-methodC:differentialphaseshift;-methodD:interferometry.MethodsA,B,andCapplytothemeasurementofchromaticdispersionofthefollowingfibresoveraspecifiedwavelengthrange:-classA1graded-indexmultimodefibres;-categoryA4f,A4gandA4hmultimodefibres;-classBsingle-modefibres(allcategories).MethodDappliestothemeasurementofchromaticdispersionvaluesofsingle-modefibrescategoriesB1,B2,B4andB5overthe1000nmto1700nmwavelengthrange.Themethodscanbeappliedtolaboratory,factoryandfieldmeasurementsofchromaticdispersion,andthewavelengthrangeofthemeasurementscanbetailoredasrequired.MeasurementsaremadeattemperatureasstatedinIEC60793-1-1,Table1-Standardrangeofatmosphericconditions(Temperature23°C±5°C).Themethodsaresuitableforfibreorcablelengthsgreaterthan1km.Theymayalsobeappliedtoshorterlengths,butaccuracyandrepeatabilitymaybecompromised.MethodDisthepreferredmethodforshorterpiecefibres(1mto10m).InformationcommontoallmethodsiscontainedinClauses1-8,andinformationpertainingtoeachindividualmethodappearsinAnnexesA,B,C,andD,respectively.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:65P;A4
【正文语种】:英语
【原文标准名称】:光纤.第1-42部分:测量方法和试验程序.色散
【标准号】:IEC60793-1-42-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆;色散;尺寸;电气工程;包络(线)时延;光纤;玻璃纤维电缆;玻璃纤维;纤维梯度;测量;测量技术;单模纤维;多模纤维;光波导;光电子学;性能;规范(验收);测试;测试装置
【英文主题词】:Cables;Chromaticdispersion;Dimensions;Dispersion;Dispersion(waves);Electricalengineering;Envelopedelay;Fibreoptics;Glassfibrecables;Glassfibres;Gradientfibres;Measurement;Measuringtechniques;Monomodefibres;Multimodefibres;Opticalwaveguides;Optoelectronics;Properties;Specification(approval);Testing;Testingdevices
【摘要】:ThispartofIEC60793establishesuniformrequirementsformeasuringthechromaticdispersionofopticalfibre,therebyassistingintheinspectionoffibresandcablesforcommercialpurposes.Chromaticdispersionvarieswithwavelength.Somemethodsandimplementationsmeasurethegroupdelayasafunctionofwavelengthandthechromaticdispersionanddispersionslopearededucedfromthederivatives(withrespecttowavelength)ofthisdata.Thisdifferentiationismostoftendoneafterthedataarefittedtoamathematicalmodel.Otherimplementationscanallowdirectmeasurement(ofthechromaticdispersion)ateachoftherequiredwavelengths.Forsomecategoriesoffibre,thechromaticdispersionattributesarespecifiedwiththeparametersofaspecificmodel.Inthesecases,therelevantrecommendationorstandarddefinesthemodelappropriateforthedefinitionofthespecifiedparameters,Forotherfibrecategories,thedispersionisspecifiedtobewithinagivenrangeforoneormorespecifiedwavelengthintervals.Inthelattercase,eitherdirectmeasurementsmaybemadeatthewavelengthextremesorsomefittingmodelmaybeusedtoalloweithergroupdelaymeasurementmethodsorimplementationsorstorageofareducedsetofparametersthatmaybeusedtocalculatetheinterpolateddispersionforparticularwavelengthswhichmaynothaveactualdirectmeasurementvalues.AnnexEgivesageneraldescriptionofchromaticdispersionfittingandoutlinesanumberoffittingequationssuitableforusewithanyofthemeasurementmethodsorfibrecategories.Thisstandardgivesfourmethodsformeasuringchromaticdispersion:-methodA:phaseshift;-methodB:spectralgroupdelayinthetimedomain;-methodC:differentialphaseshift;-methodD:interferometry.MethodsA,B,andCapplytothemeasurementofchromaticdispersionofthefollowingfibresoveraspecifiedwavelengthrange:-classA1graded-indexmultimodefibres;-categoryA4f,A4gandA4hmultimodefibres;-classBsingle-modefibres(allcategories).MethodDappliestothemeasurementofchromaticdispersionvaluesofsingle-modefibrescategoriesB1,B2,B4andB5overthe1000nmto1700nmwavelengthrange.Themethodscanbeappliedtolaboratory,factoryandfieldmeasurementsofchromaticdispersion,andthewavelengthrangeofthemeasurementscanbetailoredasrequired.MeasurementsaremadeattemperatureasstatedinIEC60793-1-1,Table1-Standardrangeofatmosphericconditions(Temperature23°C±5°C).Themethodsaresuitableforfibreorcablelengthsgreaterthan1km.Theymayalsobeappliedtoshorterlengths,butaccuracyandrepeatabilitymaybecompromised.MethodDisthepreferredmethodforshorterpiecefibres(1mto10m).InformationcommontoallmethodsiscontainedinClauses1-8,andinformationpertainingtoeachindividualmethodappearsinAnnexesA,B,C,andD,respectively.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:65P;A4
【正文语种】:英语
基本信息
| 标准名称： | 鲜鸡肉卫生标准 |
| 英文名称： | Hygienic standard for fresh chicken |
| 中标分类： | 医药、卫生、劳动保护 >> 卫生 >> 食品卫生 |
| 替代情况： | 被GB/T 2710-1996代替 |
| 发布日期： | |
| 实施日期： | 1982-06-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 1页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 医药 卫生 劳动保护 卫生 食品卫生
