Tham khảo tài liệu 'krone - white paper - testing copper permanent link and channel', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PERFORMANCE TESTING OF COPPER PERMANENT LINKS AND CHANNEL KRONE (Australia) Holdings Pty/Ltd. Ver. 5 Field Performance Testing V5 Page 1 of 8 Performance Testing of Permanent Links and Channels Testing of telecommunications Permanent Links and Channels to determine performance compliance to Class D (using Cat 5 components) and Class E (using Cat 6 components) is an issue that that is vital to the application for a KRONE Warranty. AS/NZS 3080:2002 (and ISO 11801 Ed 2) has lifted the Class D performance pass mark from Cat 5 to Cat 5E level. This document therefore correctly refers to the component category as Cat 5 for Class D performance in accordance with the International Standard. In America, this same level of component performance is still refereed to as Cat 5E. Cat 5 (Australia & Internationally) = Cat 5E (North America) 1. Permanent Links And Channels The fundamental building blocks for a telecommunications system are the permanent links (PL) and channels (Ch). The field testers needed for PL testing must nullify the effects of the test leads resulting in plug connector ends that are less than 50 mm long. The plug connector ends are also required to meet performance criteria that are electrically “centred”. This means that, as tester manufacturers produce these “centred” plugs, new plugs will have to be bought for use with the hand-held testers to obtain accurate PL test results. This requirement only applies to PL testing. Channel testing still uses the Vendor’s patch cords, which are to be left in situ after testing. The configuration of the Permanent Link and Channel is shown below. Permanent Link 90m max FD CP TO Channel 100m max 2. Passive Testing With Hand-Held Field Testers There are currently two levels of acceptable hand-held field tester: Level 2e – for testing of Class D and lower; and Level 3 – for testing of Class E and lower. Field Performance Testing V5 Page 2 of 8 Level 2e Testers This accuracy level was introduced to .
