6类线标准...

<div class="Section1" style="LAYOUT-GRID:  15.6pt none;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 22pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;"><font size="1">六类布线标准简介</font></span></b><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 22pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p><font face="Times New Roman">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">综合布线系统铜缆双绞线由</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">5</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类发展为超</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">5</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类，目前</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">6</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类双绞线也逐渐为用户所接受。自</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2001</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">年始相继编制经过</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">10</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">个版本的修改后，</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2002</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">年</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">6</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">月，</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ANSI/TIA/EIA568-B</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">铜缆双绞线</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">6</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类线标准已经正式出台。国际标准</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ISO/IECJTC/SC 25/WG3 N 598</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">工作组编写的铜缆</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">6</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类线标准也将正式出台，到时超</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">5</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类将替代原标准</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">5</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">类产品。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ANSI/TIA/EIA568-B</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">标准由</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ANSI/TIA/EIA568-A</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">演变而来，</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman"> ANSI/TIA/EIA</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">标准属于北美标准系列，在全世界一直起着综合布线产品的导向工作。新的</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">标准从结构上分为三部分：</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B1</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">综合布线系统总体要求、</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B2</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">平衡双绞线布线组件和</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B3</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">光纤布线组件。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 44.95pt; TEXT-INDENT: -27pt; LINE-HEIGHT: 150%; mso-char-indent-count: -2.25; mso-para-margin-left: 1.71gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">1</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B1</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">综合布线系统总体要求：在新标准的这一部分，包含了电信综合布线系统设计原理，安装准则以及与现场测试相关的内容。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 44.95pt; TEXT-INDENT: -27pt; LINE-HEIGHT: 150%; mso-char-indent-count: -2.25; mso-para-margin-left: 1.71gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B2</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">平衡双绞线布线组件：在新标准的这一部分中，包含了组件规范、传输性能、系统模型以及用户验证电信布线系统测量程序相关的内容。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 44.95pt; TEXT-INDENT: -27pt; LINE-HEIGHT: 150%; mso-char-indent-count: -2.25; mso-para-margin-left: 1.71gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">3</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">568-B3</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">光纤布线组件：在新标准的这一部分中，包含了与光纤电信布线系统的组件规范和传输相关要求内容。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 44.95pt; TEXT-INDENT: -27pt; LINE-HEIGHT: 150%; mso-char-indent-count: -2.25; mso-para-margin-left: 1.71gd;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p><font face="Times New Roman" size="1">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 41.95pt; TEXT-INDENT: -24pt; LINE-HEIGHT: 150%; tab-stops: list 41.95pt; mso-list: l0 level1 lfo1;"><font size="1"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">一、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></font></span></span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">六类标准简介</span></b><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></b></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2002</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">年</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">6</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">月，在美国通信工业协会（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TR-42</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">委员会的会议上，正式通过了六类布线标准，这个分类标准将成为</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA/EIA-568B</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">标准的附录，它被正式命名为</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA/EIA-568B.2-1</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">。该标准也将被国际标准化组织（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ISO</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）批准。它与以前标准的区别之一是这个标准绝大部分内容是完全一致的，就是说两个标准越来越趋于一致，新的六类标准在两个方面对以前的草案进行了完善：</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">指定六类系统组成的成份必须向下兼容（包括三类、五类、超五类布线产品），同时必须满足混合使用的要求。六类布线标准对</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">100</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">欧姆平衡双绞线、连接硬件、跳线、信道和永久链路作了具体要求。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">1</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）新的六类布线国际标准在许多方面做了完善，主要有：</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 53.9pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; mso-char-indent-count: -1.5; mso-para-margin-left: 3.42gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">①</span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                        </font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">对六类性能的测试频率最终确定为</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">1MHz</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">～</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">250MHz</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">频率。</span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                                <span lang="EN-US"><p></p></span></font></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 53.9pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; mso-char-indent-count: -1.5; mso-para-margin-left: 3.42gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">②</span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                        </font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">六类布线系统在</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">200MHz</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">时综合衰减串扰比（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">PS-ACR</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）应该有较大的余量，它提供</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">倍于超五类的带宽。为了确保整个系统有良好的电磁兼容性，这个标准还同时对线缆和连接的匹配提出了建议。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 53.9pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; mso-char-indent-count: -1.5; mso-para-margin-left: 3.42gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">③</span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                        </font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">六类与超五类的一个重要的不同点在于：改善了在串扰以及回波损耗方面的性能，对于新一代全双工的高速网络应用而言，优良的回波损耗性能是极重要的。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 53.9pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; mso-char-indent-count: -1.5; mso-para-margin-left: 3.42gd;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">④</span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">
                                        </font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">在以前的布线测试中有基本链路（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、永久链路（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ISO</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）和信道模型（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">TIA/ISO</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）。在六类标准中取消了基本链路模型，从而两个标准在测试模型上达成了一致。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">2</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）六类标准中规定了介质、布线距离、接口类型、拓扑结构、安装实践、信道功能及线缆和连接硬件性能等多方面的要求。同超五类标准一样，新的六类布线标准也采用星形的拓扑结构，要求的布线距离为：永久链路的长度不能超过</span><chmetcnv wst="on" unitname="m" sourcevalue="90" hasspace="False" negative="False" numbertype="1" tcsc="0"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">90m</font></span></chmetcnv><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">，信道长度不能超过</span><chmetcnv wst="on" unitname="m" sourcevalue="100" hasspace="False" negative="False" numbertype="1" tcsc="0"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">100m</font></span></chmetcnv><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">六类产品及系统的频率范围应当在</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">1MHz</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">～</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">250MHz</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">之间，对系统中的线缆、连接硬件、永久链路及信道在所有频点都需测试以下几种参数：插入损耗（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">Insertion-Loss</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、回损（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">Return Loss</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、延迟</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">/</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">失真（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">Delay/Skew</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、近端串扰（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">NEXT</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、功率和近端串扰（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">PowerSum NEXT</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、等效远端串扰（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">ELFEXT</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、功率和等效远端串扰（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">PowerSum ELEFEXT</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）、平衡（</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">Balance</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">：</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">LCL</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">，</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><font face="Times New Roman">LCTL</font></span><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）等其它。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.25;"><font size="1"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">另外，测试环境应当设置在最坏情况下，对产品和系统都要进行测试，从而保证测试结果的可用性。</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 41.95pt; TEXT-INDENT: -24pt; LINE-HEIGHT: 150%; tab-stops: list 41.95pt; mso-list: l0 level1 lfo1;"><font size="1"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">二、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></font></span></span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">六类测试指标</span></b><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: #333333; LINE-HEIGHT: 150%;"><p></p></span></b></font></p><p class="MsoNormalIndent" style="MARGIN: 2.5pt 0cm 0pt; TEXT-INDENT: 24pt; LINE-HEIGHT: 130%; mso-margin-bottom-alt: auto;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 130%; mso-bidi-font-size: 14.0pt; mso-bidi-font-family: Arial;"><font face="宋体"><font size="1">六类链路至少测试以下内容：<span lang="EN-US"><p></p></span></font></font></span></p><h4 style="MARGIN: auto 0cm auto 23.65pt; LINE-HEIGHT: 130%; mso-para-margin-left: 2.25gd;"><span lang="EN-US" style="FONT-WEIGHT: normal; FONT-FAMILY: 宋体; mso-bidi-font-family: Arial;"><font size="1">1</font></span><span style="FONT-WEIGHT: normal; FONT-FAMILY: 宋体; mso-bidi-font-family: Arial;"><font size="1">、 接线图（<span lang="EN-US">Wire Map</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">2</font></span><font size="1">、 长度（<span lang="EN-US">Length</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">3</font></span><font size="1">、 插入损耗<span lang="EN-US">/</span>衰减（<span lang="EN-US">Insertion loss/attenuation</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">4</font></span><font size="1">、 近端串音（<span lang="EN-US">NEXT</span>，<span lang="EN-US">Near End Crosstalk</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">5</font></span><font size="1">、 近端串音的功率和（<span lang="EN-US">PSNEXT</span>，<span lang="EN-US">Power sum NEXT</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">6</font></span><font size="1">、 衰减<span lang="EN-US">-</span>串音衰减比率（<span lang="EN-US">ACR</span>，<span lang="EN-US">Attenuation to Crosstalk Rate</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">7</font></span><font size="1">、 等电平远端串音（<span lang="EN-US">ELFEXT</span>，<span lang="EN-US">Equal Level Far End Crosstalk</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">8</font></span><font size="1">、 等电平远端串音的功率和（<span lang="EN-US">PSELFEXT</span>，<span lang="EN-US">Power sum ELFEXT</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">9</font></span><font size="1">、 结构回波损耗（<span lang="EN-US">SRL</span>，<span lang="EN-US">Structural Return Loss</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">10</font></span><font size="1">、特性阻抗（<span lang="EN-US">Impedance</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">11</font></span><font size="1">、直流电阻（<span lang="EN-US">DC resistance</span>）；</font><span lang="EN-US"><br clear="all"/><font size="1">12</font></span><font size="1">、线对间传输延时差（<span lang="EN-US">Delay skew</span>）； </font><span lang="EN-US"><br clear="all"/><font size="1">13</font></span><font size="1">、传输延时（<span lang="EN-US">Propagation Delay</span>）。<span lang="EN-US"><p></p></span></font></span></h4><p class="MsoNormal" style="MARGIN: 2.5pt 0cm 0pt; TEXT-INDENT: 28pt; LINE-HEIGHT: 130%; mso-margin-bottom-alt: auto;"><span lang="EN-US" style="FONT-FAMILY: 宋体; LETTER-SPACING: 1pt; mso-bidi-font-family: Arial;"><p><font size="1">&nbsp;</font></p></span>手机13918099912</p></div><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="mailto:HN087@163.COM">HN087@163.COM</a></p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; QQ 670003047</p>

<p>学习了</p>

不是还有一个十字骨架的吗？

谢谢楼主