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fluke DSX-5000中TCL與ELTCTL是什么意思？測(cè)試不過怎么辦？

發(fā)布日期：2014年03月19日   瀏覽次數(shù)：41次   編輯：深圳連訊

福祿克DSX-5000中國區(qū)代理深圳市連訊達(dá)電子技術(shù)開發(fā)有限公司福祿克網(wǎng)絡(luò)部工程師為大家TCL與ELTCTL兩個(gè)參數(shù)的意思。(PS:這是DTX-1800里面沒有的參數(shù)）

transverse conversion loss  TCL 橫向變換損耗
transverse conversion transfer loss  TCTL 橫變換轉(zhuǎn)移損耗
TCL (Transverse Conversion Loss) – 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.

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).
 
翻譯：測(cè)量是通過向雙絞線注入差模信號(hào)（DM），然后測(cè)量同一對(duì)雙絞線返回的共模信號(hào)（CM）。CM信號(hào)返回的越少，TCL參數(shù)就會(huì)越好，越平衡。

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.

翻譯：如果你覺得它像是回波損耗的測(cè)試，那你就說對(duì)了。回波損耗測(cè)試是通過向雙絞線注入DM（差模信號(hào)）然后測(cè)試返回的DM信號(hào)，然而TCL是測(cè)試CM信號(hào)。

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 – the DSX CableAnalyzer is capable of both DM and CM measurements, hence its ability to measure TCL and ELTCTL.

翻譯：對(duì)于ANSI/TIA-568-C.2現(xiàn)場(chǎng)測(cè)試要求直到ANSI/TIA-1152標(biāo)準(zhǔn)。在那個(gè)時(shí)候，TCL并不是一個(gè)現(xiàn)場(chǎng)測(cè)試的要求，因?yàn)闆]有現(xiàn)場(chǎng)測(cè)試設(shè)備供應(yīng)商可以執(zhí)行TCL現(xiàn)場(chǎng)測(cè)試，直到DSX-5000電纜認(rèn)證分析儀的誕生。預(yù)計(jì)其他品牌測(cè)試設(shè)備廠家最終也將提供TCL現(xiàn)場(chǎng)測(cè)量?，F(xiàn)場(chǎng)測(cè)試人員通常僅能DM測(cè)量 – 對(duì)DSX-5000電纜認(rèn)證分析儀能夠既DM和CM的測(cè)量，因此其有測(cè)量TCL與ELTCTL的能力。

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):

翻譯：如果需要對(duì)于Cat5e，Cat6，Cat 6A測(cè)試TCL和ELTCTL參數(shù)，你只需要再DSX-5000 的文件夾下面找到+TCL的后綴就可以了。

  

This will add ≈ 6.6 seconds to your AUTOTEST time.
TCL測(cè)試將增加6.6秒測(cè)試時(shí)間。
The 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 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.

翻譯：有（+TCL）后綴的預(yù)示著ANSI/TIA或者ISO/IEC測(cè)試有這個(gè)規(guī)格。 目前ANSI/TIA-568-C.2 and ISO/IEC 11801:2010 僅僅提供信道測(cè)試的極限值，如果選擇永久鏈路測(cè)試，TCL和ELTCTL也會(huì)被執(zhí)行，但是不會(huì)有通過/失敗的標(biāo)準(zhǔn)。同樣你也會(huì)看到工業(yè)以太網(wǎng)標(biāo)準(zhǔn)TIA 1005 ，E1,E2,E3的標(biāo)準(zhǔn)的限制。
 
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.
翻譯：從下面DSX-5000的例子中可以看到，Cat 6A通道測(cè)試有5.4db的余量，你就不用擔(dān)心了，因?yàn)檫@條鏈路表現(xiàn)非常好。即使在有噪音的環(huán)境下。

本文關(guān)鍵字: DSX-5000, ELTCTL, ELTCTL測(cè)試不過, TCL, TCL是什么意思, TCL測(cè)試不過
原創(chuàng)標(biāo)題：fluke DSX-5000中TCL與ELTCTL是什么意思？測(cè)試不過怎么辦？
原文鏈接：http://qqmmqq.cn/archives/dsx5000-tcl-eltctl.html
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