1、TIA/EIA STANDARD Commercial Building Telecommunications Cabling Standard Part 2: Balanced Twisted Pair Cabling Components Addendum 1 - Transmission Performance Specifications for 4-pair Category 6 Cabling TIA/EIA-568-B .2-1 (Addendum No. 1 to TIA/EIA-568-B.2) JUNE 2002 TELECOMMUNICATIONS INDUSTRY AS
2、SOCIATION The Telmmmicalionu Industry A.wociation represatu the mmunicatimw secior of Elsctronic Industries Alliance Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TWEIA
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7、of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal Nos.3-3727-ADl-B, 3-3727-AD1-B-1, and 3-3727-AD1-B-2, formulated under the cognizance of the TIA TR-42.7 Subcommittee on Telecom
8、munications Copper Cabling Systems.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING PUBLICATIONS or call Glo
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19、H LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-568-B.2-1 TRANSMISSION PERFORMANCE SPECIFICATIONS FOR 4-PAIR 100 !2 CATEGORY 6 CABLING TABLE OF CONTENTS 1
20、INTRODUCTION . 1 2 PURPOSE AND SCOPE . 1 3 NORMATIVE REFERENCES 2 4 DEFINITIONS. ACRONYMS parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated. ANSI and TIA maintain registers of currently valid nat
21、ional standards published by them. ANSMCEA S-80-576, Communications Wire and Cable for Wiring Premises, 1994 ANSM CEA S-90-661, Individually Unshielded Twisted Pair Indoor Cable for Use in Communication Wiring Systems, 1994 ANSITTIA/EIA-568-B. 1, Commercial Building Telecommunications Standard Part
22、1: General Requirements, 2001 ANSITTIA/EIA-568-B.2, Commercial Building Telecommunications Standard Part 2: Balanced Twisted-pair Cabling Components, 2001 ANSITTINEIA-568-B.2-3, Additional Considerations for Insertion Loss and Return Loss PasdFail Determination, 2002 ANSITTIA/EIA-568-B.3, Commercial
23、 Building Telecommunications Standard Part 3: Optical Fiber Cabling Components, 2000 ASTM D 4566-98, Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable, 1998 IEC 60603-7, Connectors for frequencies below 3 MHz for use with pri
24、nted boards - Part 7: Detail specification for connectors, &way, including fixed and free connectors with common mating features, with assessed quality, 1996 4 DEFINITIONS, ACRONYMS & ABBREVIATIONS 4.1 Definitions The generic definitions in this section have been formulated for use by the entire fam
25、ily of telecommunications infrastructure standards. As such, the definitions do not contain mandatory requirements of the Standard. Specific requirements are found in the normative sections of this Standard. balance: Balance is the ratio of the differential signal output at either end of any pair to
26、 a common mode signal input, at either end of the same or a different pair, and vice versa, under specified termination conditions. insertion loss deviation: The difference between the actual insertion loss as measured on a permanent link or channel and the insertion loss as determined by adding the
27、 component losses. longitudinal conversion loss: A ratio, expressed in dB, of measured differential voltage relative to the common mode voltage on the same conductor pair applied at the same end. longitudinal conversion transfer loss: A ratio, expressed in dB, of measured differential voltage at one
28、 end of a conductor pair relative to the common mode voltage applied on any pair at the opposite end or on any other pair on the same end. modular plug cord: A length of cable with a modular plug on both ends. power sum attenuation to crosstalk ratio: A ratio, expressed in dB, determined by subtract
29、ing the insertion loss from the power sum near-end crosstalk loss. transverse conversion loss: A ratio, expressed in dB, of the measured common mode voltage on a pair relative to the differential mode voltage on the same pair applied at the same end. 2 Copyright Telecommunications Industry Associati
30、on Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-568-B.2-1 4.2 Acronyms and abbreviations DUT Device under test I LD Insertion loss deviation LCL Longitudinal conversion loss LCTL Longitudinal conversion transfer loss
31、PSACR PWB Printed wiring board SIP IC SSTP Screened and shielded twisted-pair TCL Transverse conversion loss 5 TEST CONFIGURATIONS Power sum attenuation to crosstalk ratio Single Inline Package Integrated Circuit 5.1 Component test configurations Cable and connecting hardware test configurations and
32、 procedures are specified in ANSITTINEIA-568-B.2 with the additional requirements specified within this Standard. 5.2 Cabling test configurations The channel test configuration is described in ANSITTINEIA-568-B. 1. A supplemental schematic representation of the channel test configuration is illustra
33、ted in figure 1. Legend Cables and cords Connecting hardware Work area cord A Optional transition cabling B Horizontal cabling . C Patch cord or jumper cable . D Telecommunications room Horizontal cross-connect or equipment cord .E Telecommunications outlet Optional transition/consolidation connecto
34、r point connector . interconnect . CI Maximum length B + C . 90 m (295 fi) A + D + E . 10 m (32.8 fi) Figure 1 - Supplemental schematic representation of a channel test configuration 3 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproducti
35、on or networking permitted without license from IHS-,-,-TIA/EIA-568-B.2-1 The permanent link test configuration is defined in ANSITTIA/EIA-568-B. 1. A supplemental schematic representation of the permanent link test configuration is illustrated in figure 2. -b Permanent link under test i 4- Cables a
36、nd cords Connecting hardware Test equipment cord F Optional transition cabling . B Horizontal cabling C Telecommunications outlet/ Optional transition/consolidation connector point connector . interconnect. . Horizontal cross-connect or Maximum length B + C 90 m (295 ft) Figure 2 - Supplemental sche
37、matic representation of a permanent link test configuration 6 COMPONENTS 6.1 Recognized cable The following category of twisted-pair cable is recognized in addition to those identified in clause 4.2.1 of ANSlTTlAIEIA-568-B.2: Category 6: This designation applies to 1 O0 Q cables whose transmission c
38、haracteristics are specified up to 250 MHz. 6.1.1 Horizontal cable Four-pair 100 Q UTP and ScTP cables are recognized for use in category 6 horizontal cabling systems. The cable shall consist of 22 AWG to 24 AWG thermoplastic insulated solid conductors that are formed into four individually twisted
39、pairs and enclosed by a thermoplastic jacket. The cable shall meet all of the mechanical requirements of ANSI/ICEA S-80-576 applicable to four-pair inside wiring cable for plenum or general cabling within a building. In addition to the applicable requirements of ANSVICEA S-90-661-1994, the physical
40、design of horizontal cables shall meet the requirements of clauses 4.3.3.1 to 4.3.3.6 of ANSlTTlAIEIA-568-B.2. NOTE - Additional requirements for 100 Q ScTP cables are located in annex K of ANSITTINEIA-568-B.2. 4 Copyright Telecommunications Industry Association Provided by IHS under license with EI
41、ANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIAIEIA-568-B.2-1 6.1.2 Backbone cable Four-pair 100 Q UTP and ScTP cables are recognized for use in category 6 backbone cabling systems. The cable shall consist of 22 AWG to 24 AWG thermoplastic insulated solid cond
42、uctors that are formed into four individually twisted-pairs and enclosed by a thermoplastic jacket. The cable shall meet all of the mechanical requirements of ANSI/ICEA S-80-576 applicable to four-pair inside wiring cable for plenum or general cabling within a building. In addition to the applicable
43、 requirements of ANSMCEA S-90-661-1994, the physical design of backbone cables shall meet the requirements of clauses 4.4.3.1 to 4.4.3.6 of ANSITTIAIEIA-568-B.2. NOTE - Additional requirements for 100 Q ScTP cables are located in annex K of ANSITTINEIA-568-B.2. 6.1.3 Bundled and hybrid cable Bundled
44、 and hybrid cables may be used for horizontal and backbone cabling provided that each cable type is recognized (see clause 6.1.1 of this Standard and clause 4.4 of ANSITTIAIEIA-568-B.l) and meets the transmission and color-code specifications for that cable type as given in ANSITTIAIEIA-568-B.2, ANS
45、ITTIAIEIA-568-B.3, and clause 7 of this Standard. Additionally, for all frequencies from 1 MHz to 250 MHz, the total power sum NEXT loss for any disturbed pair from all pairs internal and external to that pairs jacket within the bundled or hybrid cable shall not exceed the values determined using eq
46、uation (1). Calculated power sum NEXT loss limit values that exceed 65 dB shall revert to a limit of 65 dB. psNEmbmdled - and - hbnd ,all - pairs - 41.1 - 15 log(f / 100) NOTES, 1 Hybrid UTP cables (color coded per ANSITTINEIA-568-B.2, clause 4.3.3.3) can be distinguished from multipair UTP backbone
47、 cables (color coded per ANSITTIAIEIA-568-B.2, clause 4.4.3.3) by the color coding scheme and by the transmission requirements. 2 Hybrid cables consisting of optical fiber and copper conductors are sometimes referred to as composite cables. The individual cables within a bundled cable shall meet the
48、 applicable requirements in clause 4 of ANSITTIAIEIA-568-B.3, clause 4 of ANSITTINEIA-568-B.2, annex K of ANSITTIAIEIA-568-B.2, annex M of ANSITTINEIA-568-B.2, and clause 7 of this Standard after bundle formation. 6.2 Recognized connecting hardware The following category of twisted-pair connecting h
49、ardware is recognized in addition to those identified in clause 5.4.1 of ANSITTIAIEIA-568-B.2: Category 6: This designation applies to 100 Q connecting hardware whose transmission characteristics are specified from 1 MHz to 250 MHz. 6.3 Cords Patch cords, equipment cords, and work area cords used for system moves, adds, and changes are critical to transmission performance. Category 6 cords and cordage shall meet the applicable requirements of clauses 6.1 thro
