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	<title>专注福禄克测试仪销售与技术 &#187; noise detected</title>
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		<title>DSP-4000(DSP4000)测试中noise detected</title>
		<link>http://www.faxytech.com/archives/dsp_4000_noisedeteted.html</link>
		<comments>http://www.faxytech.com/archives/dsp_4000_noisedeteted.html#comments</comments>
		<pubDate>Fri, 06 May 2011 09:43:18 +0000</pubDate>
		<dc:creator>深圳连讯</dc:creator>
				<category><![CDATA[技术专栏]]></category>
		<category><![CDATA[DSP-4000]]></category>
		<category><![CDATA[dsp4000]]></category>
		<category><![CDATA[noise detected]]></category>

		<guid isPermaLink="false">http://www.faxytech.com/?p=1043</guid>
		<description><![CDATA[今天笔者用DSP-4000去TCl测试，测试过程中出现“noise detected” ，这是什么问题呢？ 测试结果：用DSP-4000（DSP4000）测试过程中，noise detected，然后出现NEXT失败。 &#160; 分析问题： 近端串扰可能原... ]]></description>
			<content:encoded><![CDATA[<p>今天笔者用<span class='wp_keywordlink'><a href="http://www.faxytech.com/archives/dsp-4000series.html" title="福禄克FLUKE线缆测试仪DSP-4000">DSP-4000</a></span>去TCl测试，测试过程中出现“<span class='wp_keywordlink_affiliate'><a href="http://www.faxytech.com/tag/noise-detected" title="查看 noise detected 的全部文章" target="_blank">noise detected</a></span>” ，这是什么问题呢？</p>
<p>测试结果：用<span class='wp_keywordlink'><a href="http://www.faxytech.com/archives/dsp-4000series.html" title="福禄克FLuke DSP">DSP</a></span>-4000（<span class='wp_keywordlink'><a href="http://www.faxytech.com/archives/dsp-4000series.html" title="福禄克Fluke　DSP4000">DSP4000</a></span>）测试过程中，noise detected，然后出现<span class='wp_keywordlink'><a href=" http://www.faxytech.com/archives/next.html " title="NEXT">NEXT</a></span>失败。</p>
<p>&nbsp;</p>
<p>分析问题：</p>
<p><span class='wp_keywordlink'><a href=" http://www.faxytech.com/archives/next.html " title="近端串扰">近端串扰</a></span>可能原因有：不良的双绞，中间有连接器件，施工工艺不合格。（水晶头或者模块问题）</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>解决方法：</p>
<p>测试跳线没问题，检查模块发现，模块中线有相互接触，重打模块，问题解除。</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
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