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<html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> <link type="text/css" rel="stylesheet" href="../../../../../css/ccna.css"> <script src="../../../../../js/framesetHelper.js" language="JavaScript"></script><script language="JavaScript"> var pageLoaded = false; var current = ''; var currentChapter = 'knet-v214aCH47505'; function launchReference(rioID, rloID, chapterID) { contentID = "knet-v214aCV47051"; dash = contentID.indexOf('-'); sub1 = contentID.substring(0,dash); sub2 = contentID.substring(dash+1); numbackParams = "CHAPID=" + chapterID + "/RLOID=" + rloID + "/RIOID=" + rioID; ContentRef = "../../../../../"+ numbackParams + "/"+ sub1 +"/"+ sub2 +"/"; eval('top.frames.main_frame.location.href="'+ContentRef+'referencecontroller_pf.html"'); } function PrevPage() { top.currentSupport--; if (top.currentSupport <= 0) { returnContent(); } else { if (top.firstSupportPage == top.contentResourceID) { returnContent(); } else if (top.prevPage == quizID) { launchQuiz(); } else { launchReview(); } } } function launchReview(reviewID) { top.currentSupport = 0; chapterID = "knet-v214aCH47505"; nbparams = "CHAPID="+chapterID+"/RLOID="+"knet-v214aRLO47654"+"/RIOID="+reviewID; dash = chapterID.indexOf('-'); sub1 = chapterID.substring(0,dash); sub2 = chapterID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/"; //alert(ContentRef); eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); //added for navigating between Quiz and Review and back to regular Chapter pages top.currentSupport++; top.firstSupportPage = reviewID; top.prevPage = reviewID; top.contentResourceID = ''; } function launchQuiz(quizID) { top.currentSupport = 0; chapterID = "knet-v214aCH47505"; nbparams = "CHAPID="+chapterID+"/RLOID="+"knet-v214aRLO47659"+"/RIOID="+"knet-v214aRIO121275"; dash = chapterID.indexOf('-'); sub1 = chapterID.substring(0,dash); sub2 = chapterID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/"; //alert(ContentRef); eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); //added for navigating between Quiz and Review and back to regular Chapter pages top.currentSupport++; top.firstSupportPage = quizID; top.prevPage = quizID; top.contentResourceID = ''; } function returnContent() { rioID = top.currentPage; rloID = top.currentRLO; ContentID = top.currentChapter; top.firstSupportPage = ''; top.prevPage = ''; top.contentResourceID = ''; top.currentSupport = 0; nbparams = "CHAPID="+ContentID+"/RLOID="+rloID+"/RIOID="+rioID; dash = ContentID.indexOf('-'); sub1 = ContentID.substring(0,dash); sub2 = ContentID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/" eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); } </script> </head> <body leftmargin="20" topmargin="10" marginwidth="30" marginheight="10" bgcolor="#FFFFFF" onLoad="window.focus();" background="../../../../../images/ccna/common/lab/bglab.gif"> <table bgcolor="#000000" cellspacing="0" width="100%" border="0"> <tr> <td width="100%"> <table cellpadding="4" cellspacing="1" width="100%" border="0"> <tr> <td width="10%" bgcolor="#FFFFFF" valign="top"> <table cellpadding="0" cellspacing="0" width="100%" border="0"> <tr> <td width="33%"><script language="JavaScript"> //if (parent.parent.getTopName() == "chapterframeset") //{ var imgSource = '../../../../../images/ccna/common/lab/labback.gif'; document.write('<a href="javascript:PrevPage();">'); document.write('<img src="' + imgSource + '" border="0">'); document.write('</a>'); //} </script></td><td width="33%"><img border="0" src="../../../../../images/ccna/common/icon4.gif"></td> </tr> </table> <p> </p> </td><td bgcolor="#FFFFFF" valign="top"> <p align="left"> <span class="resourceTitle">Lab 5.3.6 straight-through Cable</span> </p><p class="smtext">Estimated time: 45 min.</p><p align="left"> <span class="resourceSectionTitle">Objectives:</span> </p> <blockquote> <span class="smtext"> <ul type="disc"><li>Demonstrate skill with a cable tester more advanced than a simple continuity/pin-out tester</li><li>Use the Test feature of the tester to check for opens and shorts with coax and UTP cable</li><li>Understand the use of the Cable ID feature</li></ul> </span> </blockquote><p align="left"> <span class="resourceSectionTitle">Background:</span> </p> <blockquote> <p class="smtext">In this lab, you will learn the Cable Test - Pass / Fail features of the Fluke 620 LAN CableMeter (or its equivalent). Basic cable tests can be very helpful in troubleshooting cabling problems with UTP and coaxial cable. You will learn how to use a cable tester to check for the proper installation of Unshielded Twisted Pair (UTP) and Coaxial (Thinnet) for an Ethernet network. You will test different cables to determine some problems that can occur from incorrect cabling installation and termination.</p> <p class="smtext">The cabling infrastructure (or cable plant) in a building is expected to last at least 10 years. Cabling related problems are one of the most common causes of network failure. The quality of cabling components used, the routing and installation of the cable and quality of the connector terminations will be the main factors in determining how trouble-free the cabling will be.</p> </blockquote><p align="left"> <span class="resourceSectionTitle">Tools / Preparation:</span> </p> <blockquote> <p class="smtext">Prior to starting the lab, the teacher or lab assistant should have several correctly wired CAT 5 cables (both straight-through and crossover) to test. There should also be several CAT 5 cables created with problems and a coaxial cable to test. Cables should be numbered to simplify the testing process and to maintain consistency. A cable tester should be available that can do basic cable test for UTP and coax. Work individually or in teams. The following resources will be required:</p> <span class="smtext"> <ul type="disc"><li>CAT 5 straight-through and crossover wired cables of different colors (some good and some bad)</li><li>CAT 5 straight-through and crossover wired cables with open wire connections in the middle or one or more conductors shorted at one end of different colors and different lengths</li><li>Coax cable with a short in it</li><li>Cable Tester (Fluke 620 LAN CableMeter or similar) to test cable length, continuity, wire map</li></ul> </span> </blockquote><p align="left"> <span class="resourceSectionTitle">Related Research websites:</span> </p> <blockquote> <p class="smtext">Here are several websites where you can get additional information on cabling standards:</p> <p class="smtext"><a target="_blank" href="http://www.fluke.com/"><span class="smtext">http://www.fluke.com/</span></a> </p> </blockquote><p align="left"> <span class="resourceSectionTitle"><span class="resourceRed">Step 1 - Set the Advanced Cable Tester for the Desired Cable (UTP or COAX).</span></span> </p> <blockquote> <p class="smtext">These instructions pertain to the Fluke 620 LAN CableMeter. Turn the rotary switch selector on the tester to the TEST position. Press the SETUP button to enter the setup mode and observe the LCD screen on the tester. The first option should be CABLE: Press the UP or DOWN buttons until the desired cable type of UTP or COAX (thinnet) is selected. Press ENTER to accept that setting and go to the next one. Continue pressing the UP/DOWN arrows and pressing ENTER until the tester is set to the following cabling characteristics depending on the type of cable you will be testing.</p>⌨️ 快捷键说明
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