About CAT7驗(yàn)證——CLASS F或者Fa測試FLUKE解決方案


　　七類CLASS F線纜認(rèn)證測試標(biāo)準(zhǔn)在TIA的標(biāo)準(zhǔn)數(shù)據(jù)庫中是直接跳過，取而代之的是八類的通道測試標(biāo)準(zhǔn)，真正認(rèn)證七類測試的是在ISO標(biāo)準(zhǔn)數(shù)據(jù)庫中，找到ISO11801 CHANNEL CLASS F或者FA，這就是標(biāo)準(zhǔn)的七類測試標(biāo)準(zhǔn)，測試頻率需要達(dá)到500MHZ，我們將通過實(shí)際測試，闡述七類測試的要點(diǎn)。七類測試之前，會(huì)被DTX-1800或者DSX5000系列強(qiáng)制認(rèn)定自校準(zhǔn)，這個(gè)過程和標(biāo)準(zhǔn)的設(shè)置基準(zhǔn)是一樣的操作。

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　　To test to 1 GHz,please look to the DSX-5000 CableAnalyzer which has been approved by Siemon.


　　TERA is Siemon's Category 7 connector used in Class F and FA cabling systems.It's a non RJ-45,shielded connector.Since it is not RJ45 based,you cannot use your DTX-PLA001 with DSP-PM06 or DTX-PLA002 Permanent Link Adapters.Likewise,you cannot use your DTX-CHA001,001A or 002 Channel Adapters.


　　由于七類是針對類似西蒙等標(biāo)準(zhǔn)大廠特殊的接口而設(shè)計(jì)的適配器，所以使用傳統(tǒng)的RJ45通道適配器或者長久鏈路適配器都是不支持的，必須使用TERA或者GG45的特定接口適配器才支持測試七類。

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　　You need to order the DTX-TERA kit.You will need a DTX-1800 CableAnalyzer.If you have a DTX-1200 CableAnalyzer,it can be upgraded to a DTX-1800 CableAnalyzer by purchasing the DTX-1200 Enhancement Kit,Part Number:DTX-1218E.


　　Do NOT order just the DTX-PLA011 TERA Permanent Link Adapters.You will also need at least one DTX-CHA011 TERA Channel Adapter so you can Set Reference with the main and remote units.(Shown below)


　　Class FA is rated to 1,000 MHz(1 GHz).However,when you select a Class FA limit in the DTX CableAnalyzer,the test limit will stop at 600 MHz.Why?To answer this,we'll look to what the standard states.ISO/IEC 11801 Amendment 1 and 2 defers testing requirements to IEC 61935-1.


　　In IEC 61935-1 we see the following text:


　　6.7 Accuracy performance requirements for Level IV field testers over 600 MHz.The Level IV requirements shall apply to measurements of class FA cabling up to 600 MHz and pass/fail evaluation criteria shall apply.Measurement data over 600 MHz shall be provided for information only.Detailed requirements over 600 MHz are for further study.


　　Accuracy becomes a real issue above 600 MHz for field testing.At 1,000 MHz,the Insertion Loss accuracy is going to be at least+/-6 dB.


　　通過fluke專用7類測試模塊，得到相應(yīng)的測試結(jié)果，其報(bào)告如下：

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