1、ANSlfll A-568-C.2-2009 APPROVED: AUOUST 1 1,2009 TIA STANDARD Balanced Twisted-Pair Telecommunications Cabling and Components Standards TELrnMU NleAT161(S INDUSTRY ASSOCIATION August 2009 NOTICE TLA Engineering Standards and Publications are designed to serve the public interest through eliminating
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19、A WITHOUT SUCH LIMITATIONS NOTICE TIA staff to insert applicable text here. ANSI/TIA-568-C.2 i Balanced Twisted-Pair Telecommunications Cabling and Components Standard TABLE OF CONTENTS 1 SCOPE 1 2 NORMATIVE AND INFORMATIVE REFERENCES . 1 3 DEFINITIONS, ABBREVIATIONS AND ACRONYMS, UNITS OF MEASURE 3
20、 3.1 General 3 3.2 Definitions 3 3.3 Acronyms and abbreviations 5 3.4 Units of measure 5 3.5 Variables 6 4 GENERAL 7 4.1 Backward compatibility and interoperability . 7 4.2 Recognized categories. 7 5 MECHANICAL REQUIREMENTS . 8 5.1 Channel mechanical performance . 8 5.2 Permanent link mechanical per
21、formance. 8 5.3 Horizontal cable mechanical performance . 8 5.3.1 Insulated conductor. 8 5.3.2 Pair assembly . 8 5.3.3 Insulated conductor color code . 8 5.3.4 Cable diameter 9 5.3.5 Breaking strength 9 5.3.6 Cold bend radius . 9 5.3.7 Performance marking . 9 5.3.8 Core wrap . 9 5.3.9 Core shield (s
22、creened only) 9 5.3.10 Dielectric strength (screened only) . 9 5.4 Bundled and hybrid cable mechanical performance 9 5.5 Cord cable mechanical performance . 10 5.5.1 General . 10 5.5.2 Cord cable flex life (screened only) 10 5.6 Backbone cable mechanical performance . 10 5.6.1 Insulated conductor. 1
23、0 5.6.2 Pair assembly . 10 5.6.3 Insulated conductor color code . 10 5.6.4 Core assembly 11 5.6.5 Core shield 11 5.6.6 Jacket 11 5.6.7 Performance marking . 11 5.6.8 Dielectric strength (screened only) . 11 5.6.9 Core shield resistance 11 5.7 Connecting hardware mechanical performance 11 5.7.1 Envir
24、onmental compatibility 11 5.7.2 Mounting . 11 5.7.3 Mechanical termination density 12 5.7.4 Design . 12 5.7.5 Work area telecommunications outlet/connector 13 5.7.6 Performance marking . 14 ANSI/TIA-568-C.2 ii 5.7.7 Reliability . 14 5.7.8 Shield mating interface (screened only) . 14 5.7.9 Shield con
25、tinuity (screened only) 15 5.8 Cords and jumpers mechanical performance 15 5.8.1 Insulated conductor. 15 5.8.2 Insulated conductor color codes . 15 6 TRANSMISSION REQUIREMENTS . 16 6.1 General 16 6.1.1 Return loss 16 6.1.2 Insertion loss . 16 6.1.3 NEXT loss . 16 6.1.4 PSNEXT loss 16 6.1.5 FEXT loss
26、 . 16 6.1.6 ACRF 17 6.1.7 PSACRF . 17 6.1.8 TCL . 17 6.1.9 ELTCTL . 18 6.1.10 Coupling attenuation . 18 6.1.11 Propagation delay . 18 6.1.12 Propagation delay skew 18 6.1.13 PSANEXT loss 19 6.1.14 Average PSANEXT loss . 19 6.1.15 PSAFEXT loss (connecting hardware only) . 20 6.1.16 PSAACRF . 20 6.1.1
27、7 Average PSAACRF 21 6.2 Channel transmission performance . 22 6.2.1 DC loop resistance 22 6.2.2 DC resistance unbalance 22 6.2.3 Mutual capacitance . 22 6.2.4 Capacitance unbalance: pair-to-ground . 22 6.2.5 Characteristic impedance and structural return loss (SRL) 23 6.2.6 Return loss 23 6.2.7 Ins
28、ertion loss . 24 6.2.8 NEXT loss . 26 6.2.9 PSNEXT loss 28 6.2.10 FEXT loss . 29 6.2.11 ACRF 29 6.2.12 PSFEXT loss . 30 6.2.13 PSACRF . 30 6.2.14 TCL . 31 6.2.15 TCTL . 32 6.2.16 ELTCTL . 32 6.2.17 Coupling attenuation (screened only) . 32 6.2.18 Propagation delay . 33 6.2.19 Propagation delay skew
29、33 6.2.20 ANEXT loss . 33 6.2.21 PSANEXT loss 34 6.2.22 Average PSANEXT loss . 36 6.2.23 AFEXT loss . 37 6.2.24 PSAFEXT loss 37 6.2.25 PSAACRF . 38 6.2.26 Average PSAACRF 39 6.3 Permanent link transmission performance . 40 6.3.1 DC loop resistance 40 6.3.2 DC resistance unbalance 40 ANSI/TIA-568-C.2
30、 iii 6.3.3 Mutual capacitance . 40 6.3.4 Capacitance unbalance: pair-to-ground . 40 6.3.5 Characteristic impedance and structural return loss (SRL) 40 6.3.6 Return loss 41 6.3.7 Insertion loss . 42 6.3.8 NEXT loss . 44 6.3.9 PSNEXT loss 46 6.3.10 FEXT loss . 47 6.3.11 ACRF 48 6.3.12 PSFEXT loss . 49
31、 6.3.13 PSACRF . 49 6.3.14 TCL . 50 6.3.15 TCTL . 50 6.3.16 ELTCTL . 50 6.3.17 Coupling attenuation (screened only) . 50 6.3.18 Propagation delay . 50 6.3.19 Propagation delay skew 51 6.3.20 ANEXT loss . 52 6.3.21 PSANEXT loss 52 6.3.22 Average PSANEXT Loss 54 6.3.23 AFEXT loss . 55 6.3.24 PSAFEXT l
32、oss 55 6.3.25 PSAACRF . 56 6.3.26 Average PSAACRF loss . 57 6.4 Horizontal cable transmission performance . 58 6.4.1 DC resistance . 58 6.4.2 DC resistance unbalance 58 6.4.3 Mutual capacitance . 58 6.4.4 Capacitance unbalance: pair-to-ground . 58 6.4.5 Characteristic impedance and structural return
33、 loss (SRL) 58 6.4.6 Return loss 60 6.4.7 Insertion loss . 61 6.4.8 NEXT loss . 63 6.4.9 PSNEXT loss 64 6.4.10 FEXT loss . 65 6.4.11 ACRF 65 6.4.12 PSFEXT loss . 66 6.4.13 PSACRF . 66 6.4.14 TCL . 67 6.4.15 TCTL . 68 6.4.16 ELTCTL . 68 6.4.17 Coupling attenuation (screened only) . 69 6.4.18 Propagat
34、ion delay . 70 6.4.19 Propagation delay skew 70 6.4.20 Surface transfer impedance (screened only) 71 6.4.21 ANEXT loss . 71 6.4.22 PSANEXT loss 71 6.4.23 Average PSANEXT loss . 72 6.4.24 AFEXT loss . 72 6.4.25 PSAFEXT loss 72 6.4.26 PSAACRF . 72 6.4.27 Average PSAACRF 73 6.5 Bundled and hybrid cable
35、 transmission performance 73 6.5.1 PSNEXT loss 73 6.5.2 PSNEXT loss from internal and external pairs (category 6 cables only) 73 ANSI/TIA-568-C.2 iv 6.6 Cord cable 74 6.6.1 DC resistance . 74 6.6.2 Return loss 74 6.6.3 Insertion loss . 75 6.7 Backbone cable transmission performance . 76 6.7.1 Insert
36、ion loss . 76 6.7.2 NEXT loss . 76 6.7.3 PSNEXT loss 78 6.7.4 ACRF 79 6.7.5 PSACRF . 81 6.7.6 Propagation delay . 82 6.7.7 Propagation delay skew 82 6.8 Connecting hardware transmission performance 83 6.8.1 DC resistance . 83 6.8.2 DC resistance unbalance 84 6.8.3 Mutual capacitance . 84 6.8.4 Capac
37、itance unbalance: pair-to-ground . 84 6.8.5 Characteristic impedance and structural return loss (SRL) 84 6.8.6 Return loss 85 6.8.7 Insertion loss . 86 6.8.8 NEXT loss . 87 6.8.9 PSNEXT loss 88 6.8.10 FEXT loss . 89 6.8.11 ACRF 90 6.8.12 PSFEXT loss . 90 6.8.13 PSACRF . 90 6.8.14 TCL . 91 6.8.15 TCT
38、L . 92 6.8.16 ELTCTL . 92 6.8.17 Coupling attenuation (screened only) . 93 6.8.18 Propagation delay . 93 6.8.19 Propagation delay skew 93 6.8.20 Shield transfer impedance (screened only) 93 6.8.21 ANEXT loss . 94 6.8.22 PSANEXT loss 94 6.8.23 Average PSANEXT loss . 94 6.8.24 AFEXT loss . 94 6.8.25 P
39、SAFEXT loss 95 6.8.26 PSAACRF . 95 6.8.27 Average PSAACRF 95 6.9 Cords and jumpers transmission performance 95 6.9.1 Return loss 96 6.9.2 NEXT loss . 97 Annex A (normative) - Reliability testing of connecting hardware . 100 A.1 General 100 A.2 Solderless connections 100 A.3 Modular plugs and jacks 1
40、01 A.4 Other connecting hardware 102 A.5 Informative examples of referenced test schedules 103 A.5.1 General . 103 A.5.2 Non-accessible IDC, IEC 60352-3 104 A.5.3 Modular plug and jack, IEC 60603-7 series 105 Annex B (normative) - Measurement requirements . 106 ANSI/TIA-568-C.2 v B.1 General test co
41、nfiguration 106 B.2 Balun requirements 106 B.3 Ground plane requirements . 108 B.4 Network analyzer requirements . 109 B.5 Measurement points and spacing 109 B.6 Impedance matching terminations . 109 B.6.1 Balun terminations 109 B.6.2 Resistor terminations 109 B.6.3 Termination performance at the ca
42、libration plane 110 B.7 General calibration plane . 110 B.7.1 Calibration references . 111 B.7.1.1 100 reference load measurement procedure 111 B.7.1.2 100 reference load return loss requirement . 112 B.7.2 Typical test equipment performance parameters . 112 Annex C (normative) - Cabling and compone
43、nt test procedures . 113 C.1 Measurement test setup and apparatus 113 C.1.1 Interconnections between the device under test (DUT) and the calibration plane . 113 C.1.1.1 Impedance matched test leads 113 C.1.1.1.1 Individual twisted-pair test leads 114 C.1.1.1.2 Test leads as part of cables . 114 C.1.
44、1.2 Interconnection return loss requirements 114 C.1.2 Calibration methods 114 C.1.2.1 Two-port calibration of the test system 114 C.1.2.2 One-port calibration of the test system 114 C.2 Testing of cabling . 115 C.2.1 Cabling DC resistance 115 C.2.2 Return loss of channels and permanent links . 115
45、C.2.2.1 Test configuration of channel and permanent link return loss . 115 C.2.2.2 Measurement of channel and permanent link return loss . 116 C.2.3 Insertion loss of channels and permanent links 116 C.2.3.1 Test configuration of channel and permanent link insertion loss 116 C.2.3.2 Calibration of c
46、hannel and permanent link insertion loss 116 C.2.3.3 Measurement of channel and permanent link insertion loss . 117 C.2.4 NEXT loss of channels and permanent links 117 C.2.4.1 Test configuration of channel and permanent link NEXT loss 117 C.2.4.2 Calibration of channel and permanent link NEXT loss 1
47、17 C.2.4.3 Measurement of channel and permanent link NEXT loss . 117 C.2.5 FEXT loss of channels and permanent links 117 C.2.5.1 Test configuration of channel and permanent link FEXT loss . 117 C.2.5.2 Calibration of channel and permanent link FEXT loss 117 C.2.5.3 Measurement of channel and permane
48、nt link FEXT loss . 118 C.2.6 Cabling ANEXT loss and AFEXT loss laboratory measurement procedures . 118 C.2.6.1 Test configuration of channel and permanent link ANEXT loss 118 C.2.6.1.1 Termination of pairs 118 C.2.6.1.2 Cabling construction . 118 C.2.6.1.3 Determining number of disturbing component
49、s . 119 C.2.6.2 Calibration of channel and permanent link ANEXT loss or AFEXT loss . 119 C.2.6.3 Measurement of channel and permanent link ANEXT loss or AFEXT loss 120 C.2.7 ACRF and FEXT loss of channels and permanent links 121 C.2.7.1 Test configuration of channel and permanent link FEXT loss . 121 C.2.7.2 Calibration of channel and permanent link FEXT loss 121 C.2.7.3 Measurement of channel and permanent link FEXT loss . 121 C.2.8 TCL of channels 122 ANSI/TIA-568-C.2 vi C.2.8.1 Test configuration of channel TCL 122 C.2.8.2 Calibration of channel TCL 123 C.2.8.3 Measurement
