content.htm

来自「ccna」· HTM 代码 · 共 68 行

HTM
68 行
字号 
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>Content</title>
<base target="contents">
</head>

<body>

<table border="0" width="650" cellspacing="0" cellpadding="0">
  <tr>
    <td colspan="2">
      <table border="0" width="100%" cellspacing="0" cellpadding="0">
        <tr>
          <td width="90%"><font face="Arial" size="3"><font color="#008080"><b><img border="0" src="../../images/arrow_down.gif" width="19" height="12"></b></font></font><b><font face="Arial" size="3" color="#008080">Centralized
            optical fiber link measurement </font><font color="#CCCC00" size="3" face="Arial">::</font></b></td>
          <td width="10%">
            <p align="right"><font face="Arial" size="3" color="#008080"><b>42/55</b></font></td>
        </tr>
      </table>
    </td>
  </tr>
  <tr>
    <td colspan="2">
      <img border="0" src="../../images/transdot.gif" width="1" height="15"></td>
  </tr>
  <tr>
    <td><font face="Arial" size="2"><img border="0" src="../../images/transdot.gif" width="45" height="1"></font></td>
    <td><font face="Arial" size="2">A centralized optical fiber cabling link
      segment shall be tested in one direction at one wavelength only. Because
      of the short length of cabling (300 m [984 ft] or less), attenuation
      deltas due to wavelength are insignificant. The centralized link shall be
      tested at 850 nm or 1300 nm (850 nm recommended) in one direction in
      accordance with ANSI/TIA/EIA-526-14A, Method B, One Reference Jumper. The
      attenuation test results shall be less than 3.3 dB. This value is based on
      the loss of three (3) connector pairs, one (1) pair at the
      telecommunications outlet/connector, one (1) pair at the interconnect
      center in the telecommunications room, and one (1) pair at the centralized
      cross-connect, plus 300 m (984 ft) of optical fiber cable.</font>
      <font face="Arial" size="2">For centralized optical fiber cabling link
      segments implemented in conjunction with open office cabling with a
      consolidation point, the attenuation results shall be less than 4.1 dB.</font>
      <p>&nbsp;</p>
      <p>&nbsp;</p>
      <p>&nbsp;</p>
    </td>
  </tr>
  <tr>
    <td colspan="2">
      <table border="0" width="100%" cellspacing="0" cellpadding="0">
        <tr>
          <td width="90%"><img border="0" src="../../images/arrow_up.gif" width="19" height="12"><b><font face="Arial" size="3" color="#008080">Centralized
            optical fiber link measurement </font></b><font face="Arial" size="3"><b><font color="#CCCC00">::</font></b></font></td>
          <td width="10%">
            <p align="right"><font face="Arial" size="3" color="#008080"><b>42/55</b></font></td>
        </tr>
      </table>
    </td>
  </tr>
</table>

</body>

</html>

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