IEC 60835-3-5-1994 数字微波无线电传输系统使用设备的测量方法第3部分:卫星地面站的测量第5节:上、下变频器
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【英文标准名称】:Methodsofmeasurementforequipmentusedindigitalmicrowaveradiotransmissionsystems-Part3:Measurementonsatelliteearthstations-Section5:Up-anddown-converters
【原文标准名称】:数字微波无线电传输系统使用设备的测量方法第3部分:卫星地面站的测量第5节:上、下变频器
【标准号】:IEC60835-3-5-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-04
【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/TC102
【标准类型】:()
【标准水平】:()
【中文主题词】:地面站;卫星通信;测量技术;数字信号;电气工程;无线电设备;微波链路;电信;无线电装置;差转机
【英文主题词】:Communicationtechnology;Conversion;Digitalsignals;Down-converters;Earthstations;Electricalengineering;Inspection;Inspectionspecification;Measurement;Measuringtechniques;Microwaveconnection;Microwavelinks;Microwaves;Properties;Radioequipment;Radiosystems;Radiocommunication;Ratings;Receivers;Satellitecommunications;Satellitelinks;Signaltransmission;Specification(approval);Telecommunication;Telecommunicationlinks;Telecommunicationsystems;Terrestrial;Transmissionsystems;Transmitters;Transmittingset;Transposers;Up-converters
【摘要】:Describesmethodsofmeasurementofthefollowingelectricalcharacteristics:inputandoutputreturnloss,inputandoutputlevelorpower,gain,automaticgaincontrol,amplitudemodulation/phasemodulationconversionfactor,amplitude/frequencycharac
【中国标准分类号】:M35
【国际标准分类号】:33_060_30
【页数】:35P.;A4
【正文语种】:英语
【英文标准名称】:Textileslings-Safety-Roundslings,madeofman-madefibres,forgeneralpurposeuse
【原文标准名称】:纺织吊索.安全性.一般用途的人造纤维的圆吊索
【标准号】:BSEN1492-2-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-09-15
【实施或试行日期】:2000-09-15
【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】:危险;定义;设计;单层机织纤维;起重系索;提升装置;起重吊索;荷载能力;化学纤维;作标记;聚酰胺;聚酯;聚丙烯;特性;圆吊索;安全要求;悬带;窄条带材;试验;纺织材料;应用
【英文主题词】:Danger;Definition;Design;Flatwovenfabric;Hoistingslings;Liftingdevices;Liftingslings;Loadcapacity;Man-madefibres;Marking;Polyamides;Polyesters;Polypropylene;Properties;Roundsling;Safetyrequirements;Slings;Tape;Testing;Textiles;Use
【摘要】:ThisEuropeanStandardspecifiestherequirementsrelatedtosafety,includingmethodsofratingandtestingroundslingsupto40tonnesworkingloadlimit(instraightlift)andtwo-,three-,andfour-legroundslingassemblies,withorwithoutfittings,madeofpolyamide,polyesterandpolypropylene.TheroundslingscoveredbythispartofEN1492areintendedforgeneralpurposeliftingoperations,i.e.whenusedforliftingobjects,materialsorgoodswhichrequirenodeviationsfromtherequirements,safetyfactorsorWLL'sspecified.Liftingoperationsnotcoveredbythisstandardincludetheliftingofpersons,potentiallydangerousmaterialssuchasmoltenmetalandacids,glasssheets,fissilematerials,nuclearreactorsandwherespecialconditionsapply.RoundslingsconformingtothisEuropeanStandardaresuitableforuseandstorageinthefollowingtemperatureranges:a)polyesterandpolyamide:-40℃to100℃;b)polypropylene:-40℃to80℃.ThisEuropeanStandarddoesnotapplytothetypesofroundslingindicatedbelow:a)roundslingsdesignedforsecuringorlashingofcargoestoeachotheronpalletsandplatformsorinvehicles;b)slingsoftubularwebbingwithoutfilling.ThisEuropeanStandarddealswiththetechnicalrequirementstominimizethehazardslistedinclause4whichcanariseduringtheuseofroundslingswhencarriedoutinaccordancewiththeinstructionsandspecificationsgivenbythemanufacturerorauthorizedrepresentative.
【中国标准分类号】:W59;J80
【国际标准分类号】:53_020_30
【页数】:30P.;A4
【正文语种】:英语