1、 TIA-568-C.4 July 2011Broadband Coaxial Cabling and Components Standard ANSI/TIA-568-C.4- 2011 APPROVED: JULY 11, 2011 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating
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19、.4 i Broadband Coaxial Cabling and Components Standard TABLE OF CONTENTS 1 SCOPE 1 2 NORMATIVE REFERENCES . 1 3 DEFINITIONS, ABBREVIATIONS AND ACRONYMS, UNITS OF MEASURE 2 3.1 General 2 3.2 Definitions of terms . 2 3.3 Abbreviations and acronyms 4 3.4 Units of measure 4 4 TOPOLOGY 5 4.1 Star topolog
20、y 6 4.2 Bus and star topology . 7 4.3 Multipoint bus . 8 5 CABLING SUBSYSTEM 1 . 9 5.1 Recognized cables . 9 5.2 Maximum cable length 9 5.3 Equipment outlet 9 5.4 Cable termination at Distributor A, Distributor B or Distributor C 9 6 CABLING SUBSYSTEM 2 AND CABLING SUBSYSTEM 3 10 6.1 Recognized cabl
21、es . 10 6.2 Maximum cable length 10 6.3 Cable termination . 10 7 SERIES 6 AND SERIES 11 LINK PERFORMANCE . 11 7.1 General 11 7.2 Test link . 11 7.3 Insertion loss 12 7.4 Return loss . 14 7.5 Screening attenuation 14 8 COAXIAL CABLE, CORDS, AND CONNECTING HARDWARE . 15 8.1 Coaxial cable . 15 8.1.1 Ge
22、neral 15 8.1.2 Insertion loss 15 8.1.3 Return loss . 17 8.1.4 Screening attenuation . 17 8.1.5 Transfer impedance 17 8.2 Coaxial equipment and patch cords 18 8.3 Coaxial connecting hardware . 18 8.3.1 F-type connector 18 8.3.1.1 Physical 18 8.3.1.1.1 Male . 18 8.3.1.1.2 Female . 18 8.3.1.2 Electrica
23、l . 18 ANSI/TIA-568-C.4 ii 8.3.2 5/8-24 connector 18 8.3.3 75-ohm BNC connector 18 8.4 Signal splitters 19 8.5 Filters and traps . 19 8.6 Inline splices 19 8.7 Ground blocks 19 8.8 Inline attenuators 19 8.9 Signal amplifiers . 19 8.10 Impedance matching termination devices . 19 9 INSTALLATION REQUIR
24、EMENTS 20 9.1 Installation temperature 20 9.2 Bend radius 20 9.3 Pull tension 20 9.4 F-type mating torque 20 9.5 Termination of unused ports and cables . 20 9.6 Other installation guidelines 20 10 FIELD TEST REQUIREMENTS . 21 10.1 General 21 10.2 Visual inspection 21 10.3 Verification . 21 10.4 Qual
25、ification and performance characterization 21 10.4.1 Qualification . 21 10.4.2 Performance characterization . 21 Annex A (informative) Background information for coaxial cabling requirements 22 A.1 General 22 A.2 Coaxial cable . 22 A.2.1 Insertion loss 22 A.2.2 Return loss . 22 A.2.3 Screening atten
26、uation . 22 A.2.4 Transfer impedance 22 A.3 Connecting hardware . 25 A.3.1 Insertion loss 25 A.3.2 Return loss . 25 A.3.3 Screening attenuation . 25 A.4 Coaxial cabling . 25 A.4.1 Insertion loss 25 A.4.2 Return loss . 26 A.4.3 Screening attenuation . 26 Annex B (informative) Bibliography and referen
27、ces 27 ANSI/TIA-568-C.4 iii LIST OF FIGURES Figure 1 Elements of generic cabling topology 5 Figure 2 - Example of a star topology . 6 Figure 3 - Example of bus and star topology 7 Figure 4 - Example of multipoint bus 8 Figure 5 - Coaxial equipment outlet . 9 Figure 6 - Test link for Cabling Subsyste
28、m 1 11 Figure 7 - Test link for Cabling Subsystem 2 and Cabling Subsystem 3 . 11 Figure A.1 - Comparison of linear versus discrete insertion loss values, Series 6 cable 24 Figure A.2 - Comparison of linear versus discrete insertion loss values, Series 11 cable 24 LIST OF TABLES Table 1 - Coaxial cab
29、ling insertion loss 12 Table 2 - Maximum insertion loss of coaxial cabling . 13 Table 3 - Return loss of coaxial cabling 14 Table 4 - Screening attenuation of coaxial cabling . 14 Table 5 - Coaxial cable insertion loss, for a length of 100m (328 ft) 15 Table 6 - Maximum coaxial cable insertion loss,
30、 for a length of 100m (328 ft) . 16 Table 7 - Return loss of coaxial cable 17 Table 8 - Screening attenuation of coaxial cable 17 Table 9 - Transfer impedance of coaxial cable . 17 Table 10 - Maximum pull tension for coaxial cable . 20 Table 11 - Maximum coaxial cable insertion loss (for information
31、 only) . 23 ANSI/TIA-568-C.4 iv FOREWORD (This foreword is not considered part of this Standard.) This Standard was developed by TIA Subcommittee TR-42.7. Approval of this Standard This Standard was approved by TIA Subcommittee TR-42.7, TIA Engineering Committee TR-42, and the American National Stan
32、dards Institute (ANSI). ANSI/TIA reviews standards every 5 years. At that time, standards are reaffirmed, withdrawn, or revised according to the submitted updates. Updates to be included in the next revision should be sent to the committee chair or to ANSI/TIA. Contributing organizations More than 3
33、0 organizations within the telecommunications industry contributed their expertise to the development of this Standard (including manufacturers, consultants, end users, and other organizations). Relationship to other TIA standards and documents The following are related standards regarding various a
34、spects of structured cabling that were developed and are maintained by Engineering Committee TIA TR-42. An illustrative diagram of the ANSI/TIA-568-C Series relationship to other relevant TIA standards is given in Figure i. Generic Telecommunications Cabling for Customer Premises (ANSI/TIA-568-C.0)
35、Commercial Building Telecommunications Cabling Standard (ANSI/TIA-568-C.1) Balanced Twisted-Pair Telecommunications Cabling and Components Standard (ANSI/TIA-568-C.2) Optical Fiber Cabling Components Standard (ANSI/TIA-568-C.3) Commercial Building Standard for Telecommunications Pathways and Spaces
36、(TIA-569-B) Residential Telecommunications Infrastructure Standard (ANSI/TIA-570-B) Administration Standard for Commercial Telecommunications Infrastructure (ANSI/TIA/EIA-606-A) Commercial Building Grounding (Earthing) and Bonding Requirements for Telecommunications (ANSI-J-STD-607-A) Customer-Owned
37、 Outside Plant Telecommunications Infrastructure Standard (ANSI/TIA-758-A) Building Automation Systems Cabling Standard for Commercial Buildings (ANSI/TIA/EIA-862) Telecommunications Infrastructure Standard for Data Centers (ANSI/TIA-942) Telecommunications Infrastructure Standard for Industrial Pre
38、mises (ANSI/TIA-1005) Figure i shows the schematic relationship between the ANSI/TIA-568-C series and other relevant TIA standards. ANSI/TIA-568-C.4 v Figure i Relationship between ANSI/TIA-568-C series and other relevant TIA standards ANSI/TIA-568-C.4 vi The following documents may be useful to the
39、 reader: National Electrical Safety Code (NESC) (IEEE C2-2007) National Electrical Code (NEC) (NFPA 70-2008) Useful supplements to this Standard are the following BICSI documents: the Telecommunications Distribution Methods Manual, the Outside Plant Design Reference Manual, and the Information Trans
40、port Systems Installation Methods Manual. These manuals provide practices and methods by which many of the requirements of this Standard are implemented. Annexes Annexes A and B are informative and not considered requirements of this Standard. Introduction This Standard specifies requirements and re
41、commendations for 75 broadband coaxial cabling, cables, cords, and connecting hardware to support community antenna television (CATV, commonly referred to as cable television), satellite television, and other applications supported by the telecommunications infrastructure (star topology) defined by
42、ANSI/TIA-568-C.0 and other topologies specified within this Standard. Stewardship Telecommunications infrastructure affects raw material consumption. The infrastructure design and installation methods also influence product life and sustainability of electronic equipment life cycling. These aspects
43、of telecommunications infrastructure impact our environment. Since building life cycles are typically planned for decades, technological electronic equipment upgrades are necessary. The telecommunications infrastructure design and installation process magnifies the need for sustainable infrastructur
44、es with respect to building life, electronic equipment life cycling and considerations of effects on environmental waste. Telecommunications designers are encouraged to research local building practices for a sustainable environment and conservation of fossil fuels as part of the design process. Pur
45、pose This Standard establishes performance and technical criteria for coaxial cabling system configurations for accessing and connecting their respective elements. In order to determine the requirements of a generic coaxial cabling system, performance requirements for various telecommunications serv
46、ices were considered. The diversity of services currently available, coupled with the continual addition of new services, means that there may be cases where limitations to desired performance occur. When applying specific applications to these cabling systems, the user is cautioned to consult appli
47、cation standards, regulations, equipment vendors, and system and service providers for applicability, limitations, and ancillary requirements. Specification of criteria Two categories of criteria are specified; mandatory and advisory. The mandatory requirements are designated by the word “shall“; ad
48、visory requirements are designated by the words “should”, “may“, or “desirable“ which are used interchangeably in this Standard. Mandatory criteria generally apply to protection, performance, administration and compatibility; they specify minimally acceptable requirements. Advisory criteria are pres
49、ented when their attainment may enhance the general performance of the cabling system in all its contemplated applications. A note in the text, table, or figure is used for emphasis or offering informative suggestions, or providing additional information. ANSI/TIA-568-C.4 vii Metric equivalents of US customary units The dimensions in this Standard are metric or US customary with soft conversion between the two. Life of this Standard This Standard is a living document. The criteria contained in this Standard are subject to revisions and updating as warr
