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class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/wiki/技能/"><span itemprop="name">技能</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/wiki/技能/网络相关/"><span itemprop="name">网络相关</span></a><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">寻线器-介绍</span><meta itemprop="position" content="3"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>寻线器-介绍</h1></header>
<p>介绍寻线器的原理和用处,它是你成为网络工程师的基础</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="介绍">介绍<a href="#介绍" class="hash-link" aria-label="Direct link to 介绍" title="Direct link to 介绍"></a></h2>
<p>任何网络连接的最底层基础都是物理设备,如果网线,配线架或交换机这些物理设备本身出现了问题,我们网维也是要负责维修的。</p>
<p><a href="/docs/wiki/基础知识/学校的网络结构"><code>基础知识</code></a>板块中,我们已经详细介绍了学校网络的物理层架构。网维主要负责宿舍端口到楼层交换机这一段线路。也就是说,我们主要关注宿舍内的端口,床线和路由器;还有楼层机房中汇聚的这层楼所有宿舍端口的链路。</p>
<p>想象一下,在楼层机房密密麻麻的机柜和桥架中,面对着上百根外观一模一样的网线,如果没有标签指示端口对应的床位的话,我们该如何快速找到一根网线的两端?或者,当怀疑网络连接不稳定是网线本身的问题时,我们又该如何快速判断线缆内部的通断情况?</p>
<p>这时,一个功能强大但操作简单的工具——寻线仪,就成了我们解决问题的关键。我们会帮助大家快速了解寻线仪的工作原理,并熟练掌握其在网络维修中的核心用法。</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="认识寻线器">认识寻线器<a href="#认识寻线器" class="hash-link" aria-label="Direct link to 认识寻线器" title="Direct link to 认识寻线器"></a></h2>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="原理">原理<a href="#原理" class="hash-link" aria-label="Direct link to 原理" title="Direct link to 原理"></a></h3>
<p>一套标准的寻线仪通常包含两个核心部件:</p>
<ul>
<li>
<p><strong>发射器</strong> (Emitter/Transmitter): 它产生一个特定频率的信号,并将其发射到目标线缆中。</p>
</li>
<li>
<p><strong>接收器</strong> (Receiver/Probe): 它探测这个信号,帮助我们在线缆堆里定位目标。</p>
</li>
</ul>
<p>寻线仪的原理基于电磁感应。
当我们将发射器连接到一根网线的一端并启动后,发射器会沿着这条网线的铜质线芯发送一个带有特定频率的模拟或数字信号。这种信号的本质是导线内变化的电流,根据电磁感应定律,变化的电流会在导线周围产生一个变化的电磁场。</p>
<p>这个电磁场虽然微弱,但足以被灵敏的接收器捕捉到。当我们手持接收器的探头,靠近那一大捆线缆时,只有包含了我们发射信号的那根目标线缆,其周围的电磁场才能被接收器感知到。接收器在接收到信号后,会通过发出“嘀嘀嘀”的蜂鸣声或点亮指示灯来给我们提示。声音越响亮、越清晰,就代表探头离目标线缆越近。通过这种方式,我们就能从众多线缆中精准地把它识别出来。</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="作用">作用<a href="#作用" class="hash-link" aria-label="Direct link to 作用" title="Direct link to 作用"></a></h3>
<p>在网络维修的物理层故障排查中,寻线仪是不可或缺的工具,主要解决两大难题:</p>
<ul>
<li>
<p><strong>从海量线缆中精准寻线</strong> 这是最核心的用途。通过<strong>寻线</strong>功能,可以在楼层交换机海量的线缆中,快速、准确地找到某个宿舍端口线缆的另一端,进行飞线或故障排查。</p>
</li>
<li>
<p><strong>快速诊断线缆状态</strong> 通过<strong>对线</strong>功能可以快速判断一根网线的内部8芯线对的物理连接状态例如是否存在断路、短路、错线、串扰等问题这对于制作新网线或排查物理连接故障至关重要。</p>
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<h2 class="anchor anchorWithStickyNavbar_LWe7" id="注意">注意<a href="#注意" class="hash-link" aria-label="Direct link to 注意" title="Direct link to 注意"></a></h2>
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<p>每一对寻线器的发射端和接收端都是一一对应的,不同的寻线器对之间不能混用。如果在签到和签退时,检查寻线器的工作情况时,发现寻线器可以亮,但是没法工作,可以先看看是不是昨天值班的人把不同套的寻线器装混了。</p>
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<p>用完寻线器记得一定要把电源关掉之前有很多次有的成员忘记关掉寻线器导致电池耗光需要重新补充电池的情况。这样不仅会损害机器也要麻烦API们到处跑来补充物资下班用完寻线器一定要记得检查电源是不是关闭的</p>
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<p>目前网维的寻线器型号大部分是精明鼠268型但是有的片区也装备了不同的型号有的可能不是太好用。遇到的话记得上报组长。</p>
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<p><em>另附: <a href="/assets/files/多用途线缆寻线器NF-268说明书-1-adc2c8bfab282a8cccc7924c85560ba8.pdf" target="_blank">精明鼠NF-268使用说明书</a>,使用前请看一遍说明书!</em></p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/ZSCNetSupportDept/website/tree/master/docs/wiki/03-技能/02-网络相关/01-寻线器-介绍.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"><span class="theme-last-updated">Last updated<!-- --> on <b><time datetime="2025-09-16T12:32:58.000Z" itemprop="dateModified">Sep 16, 2025</time></b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/wiki/技能/网络相关/"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">网络相关</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/wiki/技能/网络相关/对线"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">寻线器-对线</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#介绍" class="table-of-contents__link toc-highlight">介绍</a></li><li><a href="#认识寻线器" class="table-of-contents__link toc-highlight">认识寻线器</a><ul><li><a href="#原理" class="table-of-contents__link toc-highlight">原理</a></li><li><a href="#作用" class="table-of-contents__link toc-highlight">作用</a></li></ul></li><li><a href="#注意" class="table-of-contents__link toc-highlight">注意</a></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2025 ZSCNetworkSupport,Built with Docusaurus.</div></div></div></footer></div>
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