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BS EN 60793-1-47-2007 光纤.第1-47部分:测量方法和试验规程.宏弯曲损耗

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【英文标准名称】:Opticalfibres-Measurementmethodsandtestprocedures-Macrobendingloss
【原文标准名称】:光纤.第1-47部分:测量方法和试验规程.宏弯曲损耗
【标准号】:BSEN60793-1-47-2007
【标准状态】:作废
【国别】:英国
【发布日期】:2007-07-31
【实施或试行日期】:2007-07-31
【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】:衰减因子;尺寸;电气工程;光纤;挠性;损失;宏弯曲;宏观的;测量;测量技术;光波导;性能;灵敏度;测试
【英文主题词】:Dimensions;Electricalengineering;Fibreoptics;Flexibility;Losses;Macrobending;Macroscopic;Measurement;Measuringtechniques;Monomodefibres;Multimodefibres;Opticalwaveguides;Properties;Sensitivity;Specification(approval);Testing
【摘要】:ThispartofIEC60793establishesuniformrequirementsformeasuringthemacrobendinglossofsingle-modefibres(categoryB)at1550nmor1625nm,categoryA1multimodefibresat850nmor1300nm,andcategoryA3andA4multimodefibresat650nm,850nmor1300nm,therebyassistingintheinspectionoffibresandcablesforcommercialpurposes.Thestandardgivestwomethodsformeasuringmacrobendingsensitivity:MethodAMandrelwinding,pertainstocategoryBsingle-modefibresandcategoryA1multimodefibres.MethodBQuartercirclebends,pertainstocategoryA3andA4multimodefibres.Forbothofthesemethods,theopticalpowerismeasuredusingeitherthepowermonitoringorthecut-backtechnique.MethodsAandBareexpectedtoproducedifferentresultsiftheyareappliedtothesamefibre.Thisisbecausethekeydifferencebetweenthetwomethodsisthedeployment,includingthebendradiusandamountoffibrethatisbent.ThereasonforthedifferenceisthatA3andA4multimodefibresareexpectedtobedeployedinshortlengthswithrelativelyfewerbendscomparedtosingle-modeandcategoryA1multimodefibres.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:14P.;A4
【正文语种】:英语


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Product Code:SAE ARP1802
Title:Selection and Application of Polytetrafluoroethylene (Ptfe Or Tfe) Backup Rings for Hydraulic and Pneumatic Fluid Power Applications
Issuing Committee:A-6c2 Seals Committee
Scope: The backup ring is defined. The various types designed for use with O-rings in MIL-G-5514 packing glands, and MS33566 and MS21344 universal fitting installations are described. Guidelines are included for selecting backup rings and backup ring materials, Backup ring installation procedures and precautions are described. The purpose of this report is to provide information that will aid design engineers and maintenance personnel in the selection and use of TFE backup rings (retainers) and backup ring materials for aircraft and aerospace hydraulic and pneumatic fluid power applications.【英文标准名称】:Plasterofparismoldforpottery
【原文标准名称】:陶器初型模型用石膏
【标准号】:JISR9111-1977
【标准状态】:现行
【国别】:日本
【发布日期】:1977-03-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonCeramics
【标准类型】:()
【标准水平】:()
【中文主题词】:陶瓷制品;石膏;熟石膏;模制
【英文主题词】:pottery;moulding(process)
【摘要】:この規格は,陶磁器製造に使用する型材用せっニう(以下,型材用せっこうという。)について規定する。
【中国标准分类号】:Q27
【国际标准分类号】:81_060_10
【页数】:2P;A4
【正文语种】:日语