欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    CEPT T CD 04-03 E-1986 Safety Requirements for the DTE-DCE Interface《DTE-DCE接口安全要求》.pdf

    • 资源ID:593007       资源大小:155.56KB        全文页数:3页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    CEPT T CD 04-03 E-1986 Safety Requirements for the DTE-DCE Interface《DTE-DCE接口安全要求》.pdf

    1、CEPT T/CD*04-03*E 2 2326434 0003663 3 i1 TCD04-03 Page E 1 Recommendation T/CD 04-03 E (Vienna 1982, revised at Nice 1985) concerning safety requirements for the DTE-D.CE interface Recommendation proposed by Working Group T/GT 1 O “Data Communication” Text of the revised Recommendation adopted by th

    2、e “Telecommunications” Commission: “The Conference of European Postal and Telecommunications Administrations, Considering That harmonisation of safety requirements has been studied by GT/CD in co-operation with the European Computer Manufacturers Association (ECMA) and the European Conference of Ass

    3、ociations of Telecommunication Industries (EUC ATEL). Recommends That the following requirements be used in future DTE “Permission To Connect” procedures by CEPT Administra- tions and for the specification of DCEs by these Administrations.” This Recommendation is .the subject of further study and po

    4、ssible amendment. This Recommendation is also published by ECMA as Standard ECMA-83, second edition. The text of the preface to this ECMA Standard is reproduced below for information. “Brief history. An initiative by ECMA resulted in a joint study with CEPT (European Conference of Posts and Telecomm

    5、unications Administrations) conducted by rapporteurs from each organisation on the safety requirements at the interface between a DCE and a DTE (terminal) in a Public Data Network. The result was ECMA-83, 1982, simultaneously approved as CEPT Recommendation T/CD 04-03. The present revision resulted

    6、from further study, with participation also from rapporteurs from EUCATEL (Euro- pean Conference of Associations of Telecommunication Industries) aimed at extending the scope to include the DTE-to-DCE interface on a telephone network. It contains identical requirements for both types of network, bas

    7、ed on existing practice and experience on the telephone network. To achieve this commonality it was decided to modify the 1982 requirements to provide for touch-safe conditions at the interface. It is intended to publish further related agreements later.” 0 Edition of March 15, 1986 CEPT T/CD*04-03*

    8、E 82 I 232b414 0003bb2 5 m I I I I I - I I I I I I l l DTE . T/CD 04-03 E Page 3 DCE 1. SCOPE This Recommendation specifies requirements to prevent electric shock hazards from existing at, or passing in either direction through, the interface connector between Data Terminal Equipment (DTE) and Data

    9、Circuit terminating Equipment CE) in interchange circuits as defned in CCITT Recommendations V.24 and X.24. For defnition of DCE and DTE, reference is made to the CCITT book “Terms and Definitions”. V.24 or X.24 =/Network Scope of this Recommendation. The general safety of the equipment (e.g. for th

    10、e operator) is not covered by this Recommendation, which is based on the assumption that the equipment meets the relevant standards for this purpose. The certification procedure, that is the way in which it is certified that a specific equipment design meets the requirements specified, is also not c

    11、overed by this Recommendation. This Recommendation is a technical description for the DTE-to-DCE interface. It is applicable for connection of privately-owned DTE to Administration-owned DCE but its use with privately-owned DCE is not precluded. This Recommendation contains no requirements for the c

    12、onnection points of a DCE to a telecommunication system (privately owned or Administration owned) with regard to safety of this system. Note: The requirements for the connection points of an Administration owned DCE to the telecommunication network are covered by CEPT Recommendation T/CD 01-01. Admi

    13、nistrations may require precautions in addition to this Recommendation when the DTE-DCE interconnec- tion is to be established via PTT wiring. 2. REFERENCES IEC Publication 65 Safety requirements for mains operated electronic and related apparatus for household and similar general use. IEC Publicati

    14、on 364-4-41 Electsical Installations of Buildings-Part 4 Protection for Safety-Chap- ter 41 Protection against Electric Shock. IEC Publication 380 Safety of electsically energized office machines. IEC Publication 435 Safety of Data Processing equipment. IEC Publication 664 Insulation Co-ordination w

    15、ithin low voltage systems including clearancies and creepage distances for equipment. IEC Publication 664A First supplement to Publication 664. CEPT Recommendation T/CD 01-01 General Engineering requirements for Data Gircuit terminating equipment for analogue and digital networks. CCITT Volume X; Fa

    16、scicle X.l Tenns and Definitions. In general, the edition of a publication which is applicable is the last one published. However when a revision occurs, compliance with either the latest edition or the previous edition is acceptable during an interim period. t ! Edition of March 15, 1986 CEPT T/CD*

    17、04-03*E 82 = 232b414 0003bb3 7 T/CD 04-03 E Page 4 3. REQUIREMENTS V.24 and X.24 interchange circuits shall meet one of the following requirements: (a) SELV circuits as defined in IEC 380 or IEC 435; (b) SELV circuits as defined in IEC 364-4-41, not exceeding 25 Vrms or 60 Vdc; Note: IEC 664 and 664

    18、A should be taken into account in designing these circuits; (c) circuits meeting the requirements for accessible terminals in IEC 65. Note 1: Use of the above circuits results in an interface that is safe to touch, whether it is accessible or not, since these circuits comply with the various require

    19、ments in different IEC standards for parts and circuits permitted to be accessible to touch. This implies that they will not assume a hazardous voltage under normal conditions and single fault conditions. Note 2: Interconnection of equipment complying with this Recommendation to equipment that does

    20、not comply should be avoided. Where such interconnection cannot be prevented the following should be noted. Earthed circuits will probably be unaffected by the other unit, whereas floating circuits, previously safe to touch, may be degraded. Where this possibility is to be avoided, earthed circuits are preferred. Edition of March 15, 1986


    注意事项

    本文(CEPT T CD 04-03 E-1986 Safety Requirements for the DTE-DCE Interface《DTE-DCE接口安全要求》.pdf)为本站会员(unhappyhay135)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开