TIA TSB-5021-2017 Guidelines for the Use of Installed Category 5e and Category 6 Cabling to Support 2 5GBASE-T and 5GBASE-T.pdf

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1、 TSB-5021 January 2017Guidelines for the Use of Installed Category 5e and Category 6 Cabling to Support 2.5GBASE-T and 5GBASE-T NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, faci

2、litating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA from man

3、ufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications are adopted by TIA in accordance with t

4、he American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated w

5、ith its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. Any use of trademarks in this document are for information pu

6、rposes and do not constitute an endorsement by TIA or this committee of the products or services of the company. (From Project No. TIA-PN-5021-D1, formulated under the cognizance of the TIA TR-42 Telecommunications Cabling Systems, TR-42.7 Subcommittee on Telecommunications Copper Cabling Systems (5

7、68). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Technology (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development or any editi

8、ng process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pendi

9、ng patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA

10、will neither be a party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or represent that procedures or practices

11、 suggested or provided in the Manual have been complied with as respects the Document or its contents. If the Document contains one or more Normative References to a document published by another organization (“other SSO”) engaged in the formulation, development or publication of standards (whether

12、designated as a standard, specification, recommendation or otherwise), whether such reference consists of mandatory, alternate or optional elements (as defined in the TIA Procedures for American National Standards) then (i) TIA disclaims any duty or obligation to search or investigate the records of

13、 any other SSO for IPR or letters of assurance relating to any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclosure (see TIA Procedures for American National Standards Annex C.1.2.3) of Essential Patent(s) and published pending patent applications shall apply; and (iii

14、) Information as to claims of IPR in the records or publications of the other SSO shall not constitute identification to TIA of a claim of Essential Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify,

15、 inspect, test or otherwise investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROP

16、RIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE

17、WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO

18、 ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NE

19、GLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA TSB-5021 1 Guidelines for the us

20、e of installed category 5e and category 6 cabling to support 2.5GBASE-T and 5GBASE-T TABLE OF CONTENTS 1 INTRODUCTION 3 2 SCOPE . 3 3 REFERENCES . 3 4 DEFINITIONS, ACRONYMS parties to agreements based upon this TSB are encouraged to investigate the possibility of applying the most recent edition of

21、the Standard indicated. ANSI and TIA maintain registers of currently valid national standards published by them. ANSI/TIA-568-C.2, Balanced Twisted-Pair Telecommunications Cabling and Components Standard, 2009 ANSI/TIA-568-C.2-1. Balanced Twisted-Pair Telecommunications Cabling and Components Standa

22、rd, Addendum 1: Specifications for 100 Category 8 Cabling ANSI/TIA-1152-A, Requirements for Field Test Instruments and Measurements for Balanced Twisted-Pair Cabling, 2016 TIA TSB-162-A, Cabling Guidelines for Wireless Access Points, 2016. TIA TSB-184-A Guidelines for Supporting Power Delivery Over

23、Balanced Twisted-Pair Cabling (draft) IEEE Std 802.3bz Standard for Ethernet Amendment: Physical Layer and Management Parameters for 2.5 Gb/s and 5 Gb/s Operation, Types 2.5GBASE-T and 5GBASE-T TIA TSB-5021 4 4 DEFINITIONS, ACRONYMS & ABBREVIATIONS 4.1 Definitions For the purpose of this Standard th

24、e following definitions, acronyms, abbreviations, and units of measure apply. alien crosstalk: The unwanted signal coupling from a disturbing pair of a 4-pair channel, permanent link, or component to a disturbed pair of another 4-pair channel, permanent link, or component. alien far-end crosstalk lo

25、ss: The unwanted signal coupling from a disturbing pair of a 4-pair channel, permanent link, or component to a disturbed pair of another 4-pair channel, permanent link, or component, measured at the far-end. alien limited signal-to-noise ratio: Ratio derived from measurements of the cable insertion

26、loss and alien crosstalk. alien near end crosstalk loss: Unwanted signal coupling from a disturbing pair of a 4-pair channel, permanent link, or component to a disturbed pair of another 4-pair channel, permanent link, or component, measured at the near-end. attenuation to alien crosstalk ratio far-e

27、nd: The difference, in dB, between the alien far-end crosstalk from a disturbing pair of a 4-pair channel, permanent link, or component, and the insertion loss of the disturbed pair in another 4-pair channel, permanent link, or component. alien near-end crosstalk loss, power sum: The power sum of th

28、e unwanted signal coupling from multiple disturbing pairs of one or more 4-pair channels, permanent links, or components to a disturbed pair of another 4-pair channel, permanent link, or component, measured at the near-end. cable bundle: A group of cables that are tied together or in contact with on

29、e another in a closely packed configuration for at least 1 m. power sum attenuation to alien crosstalk ratio at the far end: The difference in dB between the power sum alien far-end crosstalk from multiple disturbing pairs of one or more 4-pair channels, permanent links, or components, and the inser

30、tion loss of a disturbed pair in another 4-pair channel, permanent link, or component. unbundle: To re-arrange a grouping of cables by physical separation. 4.2 Acronyms and abbreviations AACRF Attenuation to alien crosstalk ratio far-end ACRF Attenuation to crosstalk ratio, far-end AFEXT Alien far-e

31、nd crosstalk ALSNR Alien limited signal to noise ratio ANEXT Alien near-end crosstalk FEXT Far-end crosstalk loss IL Insertion loss PBO Power back-off PSAACRF Power sum attenuation to alien crosstalk ratio far-end PSACRF Power sum attenuation to crosstalk ratio, far-end PSANEXT Power sum alien near-

32、end crosstalk PSD Power spectral density SNR Signal to noise ratio WAP Wireless access point TIA TSB-5021 5 4.3 Units of measure dB decibel dBm power ratio in decibels referenced to one milliwatt C degree Celsius F degrees Fahrenheit ft feet, foot MHz megahertz m meter ohm TIA TSB-5021 6 5 TEST CONF

33、IGURATIONS The following guidelines are for the assessment of the channel transmission and alien crosstalk parameters. 5.1 Channel test configuration (topology) Note: Test configurations and modeling methodologies to include bundling lengths for alien crosstalk considerations where applicable. The f

34、ocus will be on deployed topologies. Figure 1 - Channel test configuration Legend Cables and cords Connecting hardware Work area cord A Telecommunications outlet/ Optional consolidation point cabling B connector . TO Horizontal cabling . C Optional consolidation Patch cord or jumper cable . D point

35、connector CP Telecommunications room Horizontal cross-connect or equipment cord . E interconnect C1, C2 Maximum length B + C . 90 m (295 ft) A + D + E .10 m (32.8 ft) Test equipment A B C D E Test equipment CP TO C1 C2 Channel under test TIA TSB-5021 7 Figure 2 - Schematic representation of a channe

36、l alien crosstalk test configuration Legend Cables and cords Connecting hardware Work area cord A Telecommunications outlet/ Optional consolidation point cabling . B connector . TO Horizontal cabling C Optional consolidation Patch cord or jumper cable . D point connector CP Telecommunications room H

37、orizontal cross-connect or equipment cord . E interconnect . C1, C2 Test instrument CP TO CP Test instrument C1 C2 C1 C2 TO C D A B A C D E E B Channel under test Channels under test TIA TSB-5021 8 6 INTERNAL TRANSMISSION PARAMETERS In order to meet the requirements of 2.5GBASE-T and 5GBASE-T, the t

38、ransmission parameters in Clause 6 and the alien limited signal to noise ratio (ALSNR) calculations in Clause 7 are applicable. Within Clause 6, category 5e transmission parameters, as specified in TIA-568-C.2 from 1 to 100 MHz are characterized for 2.5GBASE-T. Transmission parameters based upon Cat

39、egory 5e specified in TIA-568-C.2 are characterized up to 250 MHz for support of 5GBASE-T. Category 6 transmission parameters, as specified in TIA-568-C.2 from 1 to 250 MHz, meet these extrapolated parameters in Clause 6. A category 6A or higher system would exceed all transmission parameters in Cla

40、use 6 and Clause 7. Table 1 - Installed cabling system meets clause 6 internal transmission requirements Type 2.5GBASE-T 5GBASE-T Installed category 5e YES Frequency requirements are greater than category 5e specified range. Perform field testing or consult cable manufacturer Installed category 6 YE

41、S YES Note: These channel performance parameters are consistent with IEEE 802.3bz physical layer link segment performance specifications. All parameters in clause 6 apply up to the upper frequency of the applications. For 2.5GBASE-T the upper frequency is 100 MHz and for 5GBASE-T the upper frequency

42、 is 250 MHz. Table 2 - Frequency range of measurements Application Frequency range 2.5GBASE-T 1 f 100 MHz 5GBASE-T 1 f 250 MHz 6.1 Insertion loss Channel insertion loss should meet or be less than the values determined using equation 1 for all specified frequencies. ffff 04.04)05.002 3.096 7.1(02.1

43、(1) Note: For the purposes of field measurements, calculated channel limits that result in insertion loss values less than 3 dB revert to 3 dB maximum (see ANSI/TIA-1152). TIA TSB-5021 9 The channel insertion loss values in Table 3 are provided for information only. Table 3 - Maximum channel inserti

44、on loss Frequency (MHz) Insertion loss (dB) 1.00 2.2 4.00 4.5 8.00 6.3 10.00 7.1 16.00 9.1 20.00 10.2 25.00 11.4 31.25 12.9 62.50 18.6 100.00 24.0 200.00 35.3 250.00 40.1 6.2 Return loss Channel return loss should meet or exceed the values determined using the equations shown in Table 4 for all spec

45、ified frequencies. Table 4 - Channel return loss Frequency (MHz) Return loss (dB) 1 f 20 20 f 250 17 17 10log( f /20) The channel return loss values in Table 5 are provided for information only. Table 5 - Minimum channel Return Loss Frequency (MHz) return loss(dB) 1.00 17.0 4.00 17.0 8.00 17.0 10.00

46、 17.0 16.00 17.0 20.00 17.0 25.00 16.0 31.25 15.1 62.50 12.1 100.00 10.0 200.00 7.0 250.00 6.0 TIA TSB-5021 10 6.3 NEXT loss Channel NEXT loss should meet or exceed the values determined using the equations shown in Table 6 for all specified frequencies. Calculations that result in channel NEXT loss

47、 values greater than 60 dB revert to a requirement of 60 dB minimum. Table 6 - Channel NEXT loss Frequency (MHz) NEXT loss (dB) 1 f 100 20)100/l o g (2043(10220)100/l o g (153.35(10l o g20ff100 f 250 20)100/l o g (4043(10220)100/l o g (153.35(10l o g20ffThe channel NEXT loss values in Table 7 are pr

48、ovided for information only. Table 7 - Minimum channel NEXT loss Frequency (MHz) NEXT loss (dB) 1.00 60.0 4.00 53.5 8.00 48.6 10.00 47.0 16.00 43.6 20.00 42.0 25.00 40.3 31.25 38.7 62.50 33.6 100.00 30.1 200.00 21.4 250.00 18.2 TIA TSB-5021 11 6.4 PSNEXT loss Channel PSNEXT loss should meet or excee

49、d the values determined using the equations shown in Table 8 for all specified frequencies. Calculations that result in channel PSNEXT loss values greater than 57 dB revert to a requirement of 57 dB minimum. Table 8 - Channel PSNEXT loss Frequency (MHz) PSNEXT loss (dB) 1 f 100 20)1 0 0/l o g (2040(10220)1 0 0/l o g (153.32(10l o g20ff100 f 250 20)1 0 0/l o g (4040(10220)1 0 0/l o g (153.32(10l o g20ffThe channel PSNEXT loss v

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