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id="post_930405" ><table id="pid930405" class="plhin" summary="pid930405" cellspacing="0" cellpadding="0"> <tr> <td class="pls" rowspan="2"> <div id="favatar930405" class="pls favatar"> <a name="lastpost"></a><div class="pi"> <div class="authi"><a href="http://club.oecr.com/space-uid-132389.html" target="_blank" class="xw1" style="color: #003366">xnt888</a> </div> </div> <div class="p_pop blk bui card_gender_" id="userinfo930405" style="display: none; margin-top: -11px;"> <div class="m z"> <div id="userinfo930405_ma"></div> </div> <div class="i y"> <div> <strong><a href="http://club.oecr.com/space-uid-132389.html" target="_blank" class="xi2" style="color: #003366">xnt888</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="http://club.oecr.com/home.php?mod=space&uid=132389&do=profile" target="_blank" class="xi2">29</a></dd> </dl><div class="imicn"> <a href="http://club.oecr.com/home.php?mod=space&uid=132389&do=profile" target="_blank" title="查看详细资料"><img 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onkeyup="$('fj_btn').href='forum.php?mod=redirect&ptid=246171&authorid=0&postno='+this.value" onkeydown="if(event.keyCode==13) {window.location=$('fj_btn').href;return false;}" title="跳转到指定楼层" /> <a href="javascript:;" id="fj_btn" class="z" title="跳转到指定楼层"><img src="static/image/common/fj_btn.png" alt="跳转到指定楼层" class="vm" /></a> </div> <strong> <a href="http://bbs.oecr.com/thread-246171-1-1.html" id="postnum930405" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>1</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon930405" src="static/image/common/online_member.gif" /> <em id="authorposton930405">发表于 2011-9-19 14:27:29</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=246171&page=1&authorid=132389" rel="nofollow">只看该作者</a> <span class="none"><img src="static/image/common/arw_r.gif" class="vm" alt="回帖奖励" /></span> <span class="pipe show">|</span><a 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href="mailto:xnt888@126.com">xnt888@126.com</a> <br /> <br /> <br /> <br /> 肖小姐：13728736358<br /> <br /> 主要特点和优点 <br /> <br /> <br /> <br /> <br /> <br /> 带背灯的LCD<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>屏，保证在任何光线条件下都能显示明快的图像 <br /> <br /> 菜单驱动的操作，测试设置简便 <br /> <br /> 帮助屏幕提供了与仪器操作和<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>有关的信息 <br /> <br /> 信息屏幕提供了电缆阻抗和Vp值 <br /> <br /> 数字滤波技术，降低显示的噪声，更清楚地显示波形 <br /> <br /> 垂直和水平增量模式，可以简便地测量增量 <br /> <br /> 波形存储器，可以比较当前波形和以前记录的波形 <br /> <br /> 光标Ω显示，可以直接提供特性阻抗读数 <br /> <br /> 坚固耐用，便于携带 – 是为用于现场而设计的 <br /> <br /> 选配的图表记录仪，提供测量结果硬拷贝 <br /> <br /> <br /> <br /> 应用 <br /> <br /> <br /> <br /> <br /> <br /> 电话 <br /> <br /> 计算机/局域网 <br /> <br /> 有线电视 <br /> <br /> 电力公司 <br /> <br /> 农业 <br /> <br /> PCB制造商 <br /> <br /> 电缆制造商 <br /> <br /> 航空公司 <br /> <br /> <br /> <br /> 1500C系列是为迅速简便地定位金属电缆中的开路、短路、弯曲和其它缺陷而设计的。1502C可以测量最远2,000英尺(625米)的距离。<br /> <br /> <br /> <br /> <br /> 通过使用与雷达类似的程序，1500C系列沿着被测电缆发送电脉冲。电缆中的阻抗变化把部分脉冲能量反射回到MTDR。反射的能量在带背灯的、HyperTwist、高对比度的向列LCD显示屏上显示。显示的轨迹特点允许用户确定电缆问题的性质。<br /> <br /> <br /> <br /> <br /> 在以0.66的Vp测试50 Ω电缆时，1502C可以确定0.5 Ω电缆问题。可以测量最近相距0.8英寸的多个问题。1502C可以测量50 Ω阻抗。<br /> <br /> <br /> <br /> <br /> 典型电缆测量 <br /> <br /> <br /> <br /> <br /> <br /> 距问题的距离 <br /> <br /> 电缆传播速度 <br /> <br /> 电缆回波损耗, 单位: dB <br /> <br /> 局域网和有线电视网络中有问题的分接点和未端接的线路 <br /> <br /> <br /> </td></tr></table> </div> <div id="comment_930405" class="cm"> </div> <div id="post_rate_div_930405"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=246171&formhash=1a175d9b" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a 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