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SAE AIR1255 Spectrum Analyzers for Electromagnetic Interference Measurements

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Product Code:SAE AIR1255
Title:Spectrum Analyzers for Electromagnetic Interference Measurements
Issuing Committee:Ae-4 Electromagnetic Environmental Effects (E3) Committee
Scope: This AIR was prepared to inform the aerospace industry about the electromagnetic interference measurement capability of spectrum analyzers. The spectrum analyzers considered are of the wide dispersion type which are electronically tuned over an octave or wider frequency range. The reason for limiting the AIR to this type of spectrum analyzer is that several manufacturers produce them as general-purpose instruments, and their use for EMI measurement will give significant time and cost savings. The objective of the AIR is to give a description of the spectrum analyzers, consider the analyzer parameters, and describe how the analyzers are usable for collection of EMI data. The operator of a spectrum analyzer should be thoroughly familiar with the analyzer and the technical concepts reviewed in the AIR before performing EMI measurements.
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基本信息
标准名称:滑动轴承 半圆止推垫圈 要求和公差
英文名称:Plain bearings-Pressed bimetallic half thrust washers-Features and tolerances
中标分类: 机械 >> 通用零部件 >> 滑动轴承
ICS分类: 机械系统和通用件 >> 轴承 >> 滑动轴承
替代情况:被GB/T 10447-2008代替
发布部门: 中国机械工业联合会
发布日期:1989-02-22
实施日期:1990-01-01
首发日期:1989-02-22
作废日期:2009-03-01
主管部门:中国机械工业联合会
归口单位:全国滑动轴承标准化技术委员会
起草单位:机械标准化所
出版日期:1900-01-01
页数:6页
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所属分类: 机械 通用零部件 滑动轴承 机械系统和通用件 轴承 滑动轴承
【英文标准名称】:InformationtechnologyCodingofaudio-visualobjectsPart3:AudioAdoptedbyINCITS
【原文标准名称】:信息技术.视听对象的编码.第3部分:被INCITS采用的音频
【标准号】:ANSIISO/IEC14496-3-2001
【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】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ISO/IEC14496-3(MPEG-4Audio)isanewkindofaudiostandardthatintegratesmanydifferenttypesofaudiocoding:naturalsoundwithsyntheticsound,lowbitratedeliverywithhigh-qualitydelivery,speechwithmusic,complexsoundtrackswithsimpleones,andtraditionalcontentwithinteractiveandvirtual-realitycontent.Bystandardizingindividuallysophisticatedcodingtoolsaswellasanovel,flexibleframeworkforaudiosynchronization,mixing,anddownloadedpost-production,thedevelopersoftheMPEG-4Audiostandardhavecreatednewtechnologyforanew,interactiveworldofdigitalaudio.MPEG-4,unlikepreviousaudiostandardscreatedbyISO/IECandothergroups,doesnottargetasingleapplicationsuchasreal-timetelephonyorhigh-qualityaudiocompression.Rather,MPEG-4Audioisastandardthatappliestoeveryapplicationrequiringtheuseofadvancedsoundcompression,synthesis,manipulation,orplayback.Thesubpartsthatfollowspecifythestate-of-the-artcodingtoolsinseveraldomains;however,MPEG-4Audioismorethanjustthesumofitsparts.AsthetoolsdescribedhereareintegratedwiththerestoftheMPEG-4standard,excitingnewpossibilitiesforobject-basedaudiocoding,interactivepresentation,dynamicsoundtracks,andothersortsofnewmedia,areenabled................
【中国标准分类号】:L71
【国际标准分类号】:33_160_60;35_040
【页数】:
【正文语种】:英语