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标题:
请教FLUKE DSP-4100测试六类线问题
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作者:
vivangcn
时间:
2010-2-25 11:39
标题:
请教FLUKE DSP-4100测试六类线问题
<p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times new=" New? AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; new="New" ?Times mso-bidi-font-family: mso-hansi-font-family:>测试后其中</span></p>
<p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times new=" New? AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; new="New" ?Times mso-bidi-font-family: mso-hansi-font-family:>1、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" New? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>NEXT </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times new=" New? AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; new="New" ?Times mso-bidi-font-family: mso-hansi-font-family:>余量 <font color="#ff0000">-1.9dB 失败</font></span></p>
<p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times new=" New? AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; new="New" ?Times mso-bidi-font-family: mso-hansi-font-family:>2、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" New? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>PS NEXT <span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times new=" New? AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; new="New" ?Times mso-bidi-font-family: mso-hansi-font-family:>余量 <font color="#ff0000">-0.7dB 失败</font></span></span></p>
<p>请问这两项的余量是负值会有什么影响不?知道的XDJM帮帮忙,小弟感谢了!</p>
作者:
eint060
时间:
2010-2-25 15:37
没关系的,
作者:
rdkm
时间:
2010-2-25 19:10
首先,这两个值失败,这条链路的质量,是不合格的,影响你的质量验收。<br/>另外,这两个值是近端串扰和综合近端串扰,会影响网络的数据收发,造成信号识别困难,加大误码率,网络性能受到影响。<br/>更多的知道,请到www.rdkm.cn找相关的技术文章学习一下吧。<br/>另外,如果出现这种故障,用FLUKE的仪表,可以再按一下故障定位键,找出故障点的位置,可以判断是线缆质量问题、或是模块、配加架问题、或是施工技术问题,进一步来维修,尽量修复。<br/>
[此贴子已经被作者于2010-2-25 19:11:46编辑过]
作者:
chm18
时间:
2010-3-8 16:48
<p>测试时主机是不是在机柜端,如果是则有可能是线缆绑扎过紧造成的。</p>
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