認證測試儀,鑒定測試儀,驗證測試儀的區別

???? 在當今的測試儀市場上，有著各種不同價格，當然功能和性能也不同的儀器。雖然這些測試儀都有其各自適合的領域， 但并不是所有的測試儀都能夠滿足TIA/ISO 標準的要求進行質量保證所需的認證測試。明確這些儀器之間的區別是非常重要 的，這樣您才能夠真正了解廠家對儀器的宣傳，并能夠選擇出可以滿足于您的工作所需要的測試儀。

認證測試儀——確保布線系統滿足TIA/ISO 標準的要求
認證測試是所有線纜測試中要求最嚴格的。主要用于綜合布線的集成商和網絡最終用戶。認證測試儀是唯一可以依照TIA 或ISO標準的要求給出“通過”或“失敗”信息的儀器。測量結果可判定一條鏈路是否達到某個類別或級別（例如超5類/6類或D 級/E 級）的要求。對于綜合布線的廠商來說，認證測試是其對已安裝的布線系統提供質量保證的必要前提。例如福祿克公司的DTX-1800，DTX-1200，DTX-LT，DTX-CLT。

鑒定測試儀——判定已安裝的鏈路是否可以支持某些網絡速度和技術
“鑒定測試儀”是線纜測試儀中的新類別，幫助網絡工程師診斷和鑒定布線系統。這類儀器可以判斷已安裝布線系統是否可以支持例如 100Base-Tx，VoIP，千兆以太網等技術的要求，并能快速區分故障是布線系統造成的還是網絡問題。鑒定測試儀，例如FLUKE 網絡公司的CableIQ，比驗證測試儀的功能強很多，但不能達到對“認證測試儀”的要求。

驗證測試儀——檢驗線纜的是否正確連接
驗證測試儀進行基本的連通性測試，例如接線圖，音頻追蹤等。有些驗證測試儀還有額外的功能，比如使用時域反射技術測量線纜的長度或定位斷電與斷路的位置。例如：MS2-100。

???????? 驗證測試儀可以解決的問題是：“線纜連接是否正確?”驗證測試儀通常被網絡工程師當作解決線纜故障的首選儀器。

　　鑒定測試儀可以解決的問題是：“布線系統能支持所選用的網絡技術么?例如100Base-Tx ，千兆以太網等)” 鑒定測試儀功能更全，使得網絡工程師可在其幫助下診斷現有布線系統和對交換機端口進行維護。

　　認證測試儀可以解決的問題是：“布線系統符合有關標準么?(例如TIA-568-B.1 六類鏈路或是ISO 11801 第2 版E 級鏈路的標準)”這類儀器適用于布線系統的專業人員，以確保新的布線系統完全滿足布線系統相關標準的要求。

Cabling Installation & Maintenance 雜志

CI&M 雜志介紹了福祿克網絡全新CableIQ電纜鑒定測試儀，同時解釋了新測試類型——鑒定測試與認證測試和驗證測試的區別。

此下為原文：

Fluke Networks today announced the availability of the new CableIQ Qualification Tester, the first cabling bandwidth tester for network technicians.
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The handheld tool is designed to show network technicians what speeds existing cabling can support and helps those technicians quickly solve network connectivity problems.
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Qualification is a new category of testers in the industry that meets the emerging needs of network technicians. In contrast to certification testers, which guarantee cabling installations comply to TIA/ISO performance standards, and verification testers, which test if the cable is connected correctly, qualification testers determine if an existing cabling link can support certain network speeds and technologies.
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CableIQ‘s qualification test helps techs troubleshoot connectivity problems, deploy new technologies like VoIP and upgrade to network to higher speeds. The qualification test determines if existing cabling can support 10Base-T, 100Base-TX, VoIP, and Gigabit Ethernet. Its ability to see cabling bandwidth, coupled with device speed and duplex detection, allows techs to isolate bandwidth-related cabling problems from network problems.
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When problems are determined to be cabling related, technicians can use CableIQ‘s diagnostics to locate performance faults. The result is faster problem resolution, fewer escalated trouble tickets and seamless upgrades to higher network speeds.
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CableIQ also identifies what is at the far end of any cabling link with infrastructure discovery. This allows the technician to see whether the port is connected to a switch, a PC, an analog phone line or an open cable, as well as verify device speed and duplex settings. Technicians can use the discovery mode to quickly map out their cabling infrastructures, verify moves, adds and changes, and improve switch utilization by freeing up and redeploying unused ports. All these tests can be done while the network is live.
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CableIQ‘s intelligent wiremap graphically maps the cable’s wiring configuration and shows the distance to opens and shorts to isolate faults easier. CableIQ will show which wire is open, and at what distance from the tester. In addition, CableIQ‘s remote ID accessories show the user, simultaneously, both the office location and the wiremap to that office.
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The tester uses IntelliTone digital signaling technology to precisely locate cables on both passive and active networks in even the most chaotic wiring closet. CableIQ generates both digital and analog tones for use with Fluke Networks’ IntelliTone Probe.