【英文标准名称】:Acoustics-Measurementofairbornenoiseemittedbyinformationtechnologyandtelecommunicationsequipment
【原文标准名称】:声学.信息技术设备和电信设备发出的空气噪声的测量
【标准号】:ISO7779-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-08-15
【实施或试行日期】:2010-08-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;声学试验;声学;空气噪声;发出的空气噪声;空气(载)声;电缆;校正;粘粒粒级;比较;计算机;修正;数据;数据处理;数据处理设备;定义(术语);测定;包络面法;环境;外部噪声;过滤器;自由场;频率;搬运;信息技术;输入电压;装置;仪器;布置;响度级;机械噪声;机械;测量;测量持续时间;测量斜床;测量环境;测量不确定度;测量仪器;测量室;测量面;测量系统;测量技术;方法;传声器;潮气;噪声;噪声控制;噪声排放;噪声(环境的);噪声测量;办公室设备;办公机器;使用条件;操作台;操作;操作者;PC;个人计算机;精密度;压力;打印机;反射;混响室法;混响室;转动;就坐;声强;声级;声压;声压级;声源;表;电信;温度;终端;试验;装置类型;工作地点
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Airbornenoiseemitted;Airbornesound;Cables;Calibration;Clayfraction;Comparison;Computers;Corrrections;Data;Dataprocessing;Dataprocessingequipment;Definitions;Determination;Envelopingsurfacemethods;Environment;Externalnoise;Filters;Freefields;Frequencies;Handling;Informationtechnology;Inputvoltage;Installations;Instruments;Layout;Loudnesslevels;Machinenoise;Machines;Measurement;Measurementduration;Measuringbanks;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringrooms;Measuringsurfaces;Measuringsystems;Measuringtechniques;Methods;Microphones;Moisture;Noise;Noisecontrol;Noiseemissions;Noise(environmental);Noisemeasurements;Officeequipment;Officemachines;Operatingconditions;Operatingstations;Operation;Operators;PC;Personalcomputers;Precision;Pressure;Printers;Reflection;Reverberationroommethod;Reverberationrooms;Rotation;Sitting;Soundintensity;Soundlevel;Soundpressure;Soundpressurelevel;Soundsources;Tables;Telecommunications;Temperature;Terminals;Testing;Typeofunit;Workingplaces
【摘要】:ThisInternationalStandardspecifiesproceduresformeasuringandreportingthenoiseemissionofinformationtechnologyandtelecommunicationsequipment.NOTE1ThisInternationalStandardisconsideredpartofanoisetestcode(see3.1.2)forthistypeofequipment,andisbasedonbasicnoiseemissionstandards(see3.1.1)ISO3741,ISO3744,ISO3745andISO11201.ThebasicemissionquantityistheA-weightedsoundpowerlevelwhichmaybeusedforcomparingequipmentofthesametypebutfromdifferentmanufacturers,orforcomparingdifferentequipment.ThreebasicnoiseemissionstandardsfordeterminationofthesoundpowerlevelsarespecifiedinthisInternationalStandardinordertoavoidunduerestrictiononexistingfacilitiesandexperience.ISO3741specifiescomparisonmeasurementsinareverberationtestroom;ISO3744andISO3745specifymeasurementsinanessentiallyfreefieldoverareflectingplane.AnyoneofthesethreebasicnoiseemissionstandardscanbeselectedandusedexclusivelyinaccordancewiththisInternationalStandardwhendeterminingsoundpowerlevelsofamachine.TheA-weightedsoundpowerlevelissupplementedbytheA-weightedemissionsoundpressureleveldeterminedattheoperatorposition(s)orthebystanderpositions,basedonbasicnoiseemissionstandardISO11201.Thissoundpressurelevelisnotaworker'simmissionratinglevel,butitcanassistinidentifyinganypotentialproblemsthatcouldcauseannoyance,activityinterference,orhearingdamagetooperatorsandbystanders.MethodsfordeterminationofwhetherthenoiseemissionincludesprominentdiscretetonesorisimpulsiveincharacterarespecifiedinAnnexesDandE,respectively.ThisInternationalStandardissuitablefortypetestsandprovidesmethodsformanufacturersandtestinglaboratoriestoobtaincomparableresults.ThemethodsspecifiedinthisInternationalStandardallowthedeterminationofnoiseemissionlevelsforafunctionalunit(see3.1.4)testedindividually.Theproceduresapplytoequipmentwhichemitsbroad-bandnoise,narrow-bandnoiseandnoisewhichcontainsdiscrete-frequencycomponents,orimpulsivenoise.Thesoundpowerandemissionsoundpressurelevelsobtainedcanservenoiseemissiondeclarationandcomparisonpurposes(seeISO9296).NOTE2Thesoundpowerandemissionsoundpressurelevelsobtainedarenottobeconsideredasinstallationnoiseimmissionlevels;however,theycanbeusedforinstallationplanning(seeECMATR/27[4]).Ifsoundpowerlevelsobtainedaredeterminedforanumberoffunctionalunitsofthesameproductionseries,theycanbeusedtodetermineastatisticalvalueforthatproductionseries(seeISO9296).
【中国标准分类号】:
【国际标准分类号】:17_140_20;35_020
【页数】:70P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 白铜化学分析方法 钼蓝分光光度法测定硅量 |
| 中标分类： |
冶金 >>
金属化学分析方法 >>
重金属极其合金分析方法 |
| 替代情况： | 被GB/T 5121.23-1996代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1988-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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所属分类： 冶金 金属化学分析方法 重金属极其合金分析方法