Network Cable Testers

 

Network Cable Testers

Whether installing new cable, or troubleshooting existing cable, ethernet network cable testing plays an important role in the process.Common network tests for datacom cabling include length, wiremap, attenuation, NEXT, DC loop resistance, and return loss.

随着网络的发展,布线基础设施的要求也要随之提高才能支持网络。New network cabling standards are continuously being developed to provide guidelines for cabling professionals when installing, testing, troubleshooting, and certifying either copper and fiber cable network.无论是要部署 100BASE-TX、100BASE-TX 还是 1000BASE-T 中的任何技术,都必须满足特定的要求并避免可能发生的问题。With 10GBASE-T, it becomes even more critical to keep current with the latest proliferations in ethernet cabling and network cable testing.

Network cable testing provides a level of assurance that the installed cabling links provide the desired transmission capability to support the data communication desired by the users.

Types of Network Cable Testers



Cable Tester with DSX 5000 Cable Analyzer Network cable test instruments are designed with a variety of focused features for particular field tasks.不同的仪器在价格、性能、应用上各有不同。所有仪器均可根据在现场必须执行的任务而分类成三个等级:认证、鉴定或检验。While some features overlap between test tools, each group answers a unique network testing need and provides a different level of operational assurance.

Levels of Network Cable Testing



Cable Certification Testers – guarantees cabling system compliance to industry standards



认证仪器是唯一可以根据行业标准对线缆提供是否“通过”或“不通过”信息的工具。北美市场最受欢迎的行业标准组织是电信产业协会 (TIA),该协会处理结构化布线的传输能力。在国际市场上,国际标准化组织的国际电工委员会 (ISO/IEC) 为电信线缆创建并且维护各种标准。

认证测试工具可以确定通路符合类别 (TIA) 或种类 (ISO) 的标准,例如 6 类或 E 类,这些标准是与具体网络技术无关的。这使其更加“面向未来”,因为可以根据这些标准的设计出现新网络技术,从而能够被安装的认证线缆所支持。Cable certification is the final step required by many structured cabling manufacturers to grant their warranties for a new cabling installation.The DSX CableAnalyzer™ Series has become the premier network certification tester in the market for professional data communication installers, as well as LAN network infrastructure staffs.
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Cable Qualification Testers – determines if an existing cabling link can support certain network speeds and technologies



认证测试仪可以满足不需要安装新线缆但需要辨别现有网络问题网络技师的需求。鉴定资格测试器可以执行各种测试,以判断现有的布线是否支持 “Fast Ethernet” (100BASE-TX)、互联网语音协议 (VoIP),或者千兆以太网等技术。此外,这些测试工还可以让网络工程人员迅速找出布线的问题而不影响网络协议的使用或立即着手解决问题。合格的测试工具,如 CableIQ™ Qualification Tester,包括验证测试工具的所有功能,并且更为强大,可以执行布线带宽的评估并确定影响带宽的故障。鉴定测试工具不执行任何行业标准中规定的各种测试,所以不是“认证工具”。

Cable Verification Testers – verifies that cable is connected correctly



检验测试工具执行基本连通性的职能,确保所有布线中的线缆都正确地连接到终端,而不与其他导电物连接。在 双绞线布线中,一定要维护线缆的配对。较好的检验测试工具也可以确认线缆的配对,并且查出类似“分拆线对”的安装瑕疵。检验测试工具还可以利用音频发生器找到布线链路,协助故障处理。检验测试工具有时还会包括其他功能,例如,时间领域反射仪 (TDR)。这项功能可以确定线缆的长度或到断点或短路的距离。这些测试工具不会提供任何关于布线带宽或布线是否适用于高速数据通信功能的信息。

 

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