{"id":1933,"date":"2014-03-25T13:35:28","date_gmt":"2014-03-25T05:35:28","guid":{"rendered":"http:\/\/www.fluck.cn\/?p=1933"},"modified":"2014-03-25T13:35:28","modified_gmt":"2014-03-25T05:35:28","slug":"dsx5000-tcl-eltctl","status":"publish","type":"post","link":"https:\/\/www.lqsdjs.com\/html\/dsx5000-tcl-eltctl.html","title":{"rendered":"DSX-5000\u6d4b\u8bd5\u6807\u51c6\u540d\u8bcd\u89e3\u91ca\u4e4bTCL\u548cELTCTL"},"content":{"rendered":"

\u00a0DSX-5000<\/a>\u4e2d\u56fd\u533a\u4ee3\u7406\u6df1\u5733\u5e02\u798f\u6b23\u667a\u80fd\u7f51\u7edc\u79d1\u6280\u6709\u9650\u516c\u53f8\u4e3a\u5927\u5bb6\u89e3\u91ca\u4e0bDSX-5000<\/a><\/span>\u6d4b\u8bd5\u6807\u51c6\u4e2dTCL\u4e0eELTCTL\u4e24\u4e2a\u53c2\u6570\u7684\u610f\u601d\u3002\u8fd9\u4e9b\u53c2\u6570\u90fd\u662fDTX-1800\u3001DTX-1200\u3001DTX-LT\u91cc\u9762\u6d4b\u4e0d\u4e86\u7684\u53c2\u6570\u3002<\/p>\n

transverse conversion loss TCL \u6a2a\u5411\u53d8\u6362\u635f\u8017
\ntransverse conversion transfer loss TCTL \u6a2a\u53d8\u6362\u8f6c\u79fb\u635f\u8017
\nTCL (Transverse Conversion Loss) \u2013 DSX CableAnalyzer TCL is one of two balance measurements found in ANSI\/TIA-568-C.2, ANSI\/TIA-1005 and ISO\/IEC 11801:2010. The other is ELTCTL.<\/p>\n

The measurement is made by injecting a differential mode signal (DM) into a twisted pair, then measuring the common mode signal (CM) returned on that same twisted pair. The smaller the CM signal returned, the better the TCL measurement (balance).<\/p>\n

\u7ffb\u8bd1\uff1a\u6d4b\u91cf\u662f\u901a\u8fc7\u5411\u53cc\u7ede\u7ebf\u6ce8\u5165\u5dee\u6a21\u4fe1\u53f7\uff08DM\uff09\uff0c\u7136\u540e\u6d4b\u91cf\u540c\u4e00\u5bf9\u53cc\u7ede\u7ebf\u8fd4\u56de\u7684\u5171\u6a21\u4fe1\u53f7\uff08CM\uff09\u3002CM\u4fe1\u53f7\u8fd4\u56de\u7684\u8d8a\u5c11\uff0cTCL\u53c2\u6570\u5c31\u4f1a\u8d8a\u597d\uff0c\u8d8a\u5e73\u8861\u3002<\/p>\n

\"\"<\/p>\n

If it looks similar to a Return Loss measurement, you’re right. Except a Return Loss measurement is made by injecting a DM signal into the pair and measuring the DM signal returned. Here we are measuring the CM signal returned which is TCL.<\/p>\n

\u7ffb\u8bd1\uff1a\u5982\u679c\u4f60\u89c9\u5f97\u5b83\u50cf\u662f\u56de\u6ce2\u635f\u8017\u7684\u6d4b\u8bd5\uff0c\u90a3\u4f60\u5c31\u8bf4\u5bf9\u4e86\u3002\u56de\u6ce2\u635f\u8017\u6d4b\u8bd5\u662f\u901a\u8fc7\u5411\u53cc\u7ede\u7ebf\u6ce8\u5165DM\uff08\u5dee\u6a21\u4fe1\u53f7\uff09\u7136\u540e\u6d4b\u8bd5\u8fd4\u56de\u7684DM\u4fe1\u53f7\uff0c\u7136\u800cTCL\u662f\u6d4b\u8bd5CM\u4fe1\u53f7\u3002<\/p>\n

Field test requirements for ANSI\/TIA-568-C.2 are deferred to ANSI\/TIA-1152. At this time, TCL is not a field test requirement because until the DSX CableAnalyzer came along, no field test equipment vendor could perform a TCL field test. It is anticipated that other test equipment vendors will eventually offer TCL field measurements too. Field testers are normally capable of DM measurements only \u2013 the DSX CableAnalyzer is capable of both DM and CM measurements, hence its ability to measure TCL and ELTCTL.<\/p>\n

\u7ffb\u8bd1\uff1a\u5bf9\u4e8eANSI\/TIA-568-C.2\u73b0\u573a\u6d4b\u8bd5\u8981\u6c42\u76f4\u5230ANSI\/TIA-1152\u6807\u51c6\u3002\u5728\u90a3\u4e2a\u65f6\u5019\uff0cTCL\u5e76\u4e0d\u662f\u4e00\u4e2a\u73b0\u573a\u6d4b\u8bd5\u7684\u8981\u6c42\uff0c\u56e0\u4e3a\u6ca1\u6709\u73b0\u573a\u6d4b\u8bd5\u8bbe\u5907\u4f9b\u5e94\u5546\u53ef\u4ee5\u6267\u884cTCL\u73b0\u573a\u6d4b\u8bd5\uff0c\u76f4\u5230DSX-5000<\/a><\/span>\u7535\u7f06\u8ba4\u8bc1\u5206\u6790\u4eea\u7684\u8bde\u751f\u3002\u9884\u8ba1\u5176\u4ed6\u54c1\u724c\u6d4b\u8bd5\u8bbe\u5907\u5382\u5bb6\u6700\u7ec8\u4e5f\u5c06\u63d0\u4f9bTCL\u73b0\u573a\u6d4b\u91cf\u3002\u73b0\u573a\u6d4b\u8bd5\u4eba\u5458\u901a\u5e38\u4ec5\u80fdDM\u6d4b\u91cf \u2013 \u5bf9DSX-5000<\/a><\/span>\u7535\u7f06\u8ba4\u8bc1\u5206\u6790\u4eea\u80fd\u591f\u65e2DM\u548cCM\u7684\u6d4b\u91cf\uff0c\u56e0\u6b64\u5176\u6709\u6d4b\u91cfTCL\u4e0eELTCTL\u7684\u80fd\u529b\u3002<\/p>\n

If you wish to add TCL and ELTCTL to your standard Category 5e, 6, 6A or Class D, E or EA test, select your test limit under the folder in DSX called Balance Measurements and look for your test limit with a suffix of (+TCL):<\/p>\n

\u7ffb\u8bd1\uff1a\u5982\u679c\u9700\u8981\u5bf9\u4e8eCat5e\uff0cCat6\uff0cCat 6A\u6d4b\u8bd5TCL\u548cELTCTL\u53c2\u6570\uff0c\u4f60\u53ea\u9700\u8981\u518dDSX-5000<\/a><\/span> \u7684\u6587\u4ef6\u5939\u4e0b\u9762\u627e\u5230+TCL\u7684\u540e\u7f00\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n

\"DSX-5000\"<\/p>\n

This will add \u2248 6.6 seconds to your AUTOTEST time.
\nTCL\u6d4b\u8bd5\u5c06\u589e\u52a06.6\u79d2\u6d4b\u8bd5\u65f6\u95f4\u3002
\nThe suffix of (+TCL) indicates a standard ANSI\/TIA or ISO\/IEC test with the addition of TCL and ELTCTLmeasurements. ANSI\/TIA-568-C.2 and ISO\/IEC 11801:2010 only provide test limits for Channel measurements at this time. If you select a Perm. Link test limit, the TCL and ELTCTL<\/a> measurements will be performed, but there will be no PASS\/FAIL criteria applied. You will also see the Industrial Ethernet standards TIA 1005 with the different E1, E2 and E3 environmental TCL and ELTCTL limits.<\/p>\n

\u7ffb\u8bd1\uff1a\u6709\uff08+TCL\uff09\u540e\u7f00\u7684\u9884\u793a\u7740ANSI\/TIA\u6216\u8005ISO\/IEC\u6d4b\u8bd5\u6709\u8fd9\u4e2a\u89c4\u683c\u3002 \u76ee\u524dANSI\/TIA-568-C.2 and ISO\/IEC 11801:2010 \u4ec5\u4ec5\u63d0\u4f9b\u4fe1\u9053\u6d4b\u8bd5\u7684\u6781\u9650\u503c\uff0c\u5982\u679c\u9009\u62e9\u6c38\u4e45\u94fe\u8def\u6d4b\u8bd5\uff0cTCL\u548cELTCTL\u4e5f\u4f1a\u88ab\u6267\u884c\uff0c\u4f46\u662f\u4e0d\u4f1a\u6709\u901a\u8fc7\/\u5931\u8d25\u7684\u6807\u51c6\u3002\u540c\u6837\u4f60\u4e5f\u4f1a\u770b\u5230\u5de5\u4e1a\u4ee5\u592a\u7f51\u6807\u51c6TIA 1005 \uff0cE1,E2,E3\u7684\u6807\u51c6\u7684\u9650\u5236\u3002<\/p>\n

In the example below from a DSX-5000 CableAnalyzer, a Category 6A Channel was tested. With a margin of 5.4 dB (6 dB is a factor of 2), you can feel confident that this link will perform well, even in a noisy environment.
\n\u7ffb\u8bd1\uff1a\u4ece\u4e0b\u9762DSX-5000\u7684\u4f8b\u5b50\u4e2d\u53ef\u4ee5\u770b\u5230\uff0cCat 6A\u901a\u9053\u6d4b\u8bd5\u67095.4db\u7684\u4f59\u91cf\uff0c\u4f60\u5c31\u4e0d\u7528\u62c5\u5fc3\u4e86\uff0c\u56e0\u4e3a\u8fd9\u6761\u94fe\u8def\u8868\u73b0\u975e\u5e38\u597d\u3002\u5373\u4f7f\u5728\u6709\u566a\u97f3\u7684\u73af\u5883\u4e0b\u3002<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00a0DSX-5000\u4e2d\u56fd\u533a\u4ee3\u7406\u6df1\u5733\u5e02\u798f\u6b23\u667a\u80fd\u7f51\u7edc\u79d1\u6280\u6709\u9650\u516c\u53f8\u4e3a\u5927\u5bb6\u89e3\u91ca\u4e0bDSX-5000\u6d4b\u8bd5\u6807\u51c6\u4e2dTCL\u4e0eELTCTL\u4e24\u4e2a\u53c2\u6570\u7684\u610f\u601d\u3002\u8fd9\u4e9b\u53c2\u6570\u90fd\u662fDTX-1800\u3001DTX-1200\u3001DTX-LT\u91cc\u9762\u6d4b\u4e0d\u4e86\u7684\u53c2\u6570\u3002 transverse conversion loss TCL... ","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[244,271,398,501,903,1401],"views":112,"_links":{"self":[{"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/posts\/1933"}],"collection":[{"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/comments?post=1933"}],"version-history":[{"count":0,"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/posts\/1933\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/media?parent=1933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/categories?post=1933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lqsdjs.com\/wp-json\/wp\/v2\/tags?post=1933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}