SAE J 3117-2017 Un-shielded Balanced Single Twisted Pair Ethernet Cable.pdf

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1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there

2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p

3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497

4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/J3117_201705 SURFACE VEHICLE STANDARD J3117 MAY2017 Issued 2017-05 Un-shielded Balanced Single

5、Twisted Pair Ethernet Cable RATIONALE This is a new document for un-shielded balanced single twisted pair data cable intended for use in surface vehicle cables for 100BASE-T1 Ethernet PHY (100 Mbps) applications. TABLE OF CONTENTS 1. SCOPE . 2 1.1 Application 2 2. REFERENCES . 2 2.1 Applicable Docum

6、ents . 2 2.2 General References . 3 3. TERMS & DEFINITIONS . 3 4. GENERAL 4 4.1 Classification 4 4.2 General Test Conditions 4 4.3 Ovens . 5 4.4 Tolerances . 5 4.5 Representative Conductor Sizes for Testing . 5 5. GENERAL SPECIFICATIONS . 5 5.1 Cable Types . 5 5.2 Construction . 6 5.3 Ovality of Jac

7、ket (Sheath) 6 5.4 Electrical Performance . 7 6. NOTES . 10 6.1 Revision Indicator . 10 SAE INTERNATIONAL J3117 MAY2017 Page 2 of 13 APPENDIX A Examples of Round Ethernet (J-UTP) Cables . 11 APPENDIX B . 12 APPENDIX C . 13 Figure 1 Temperature Class . 4 Figure 2 General Specifications . 5 Figure 3 U

8、n-shielded balanced single twisted pair ethernet cable . 6 Figure 4 Ethernet Cable Construction 6 Figure 5 Test Temperature for Initial “as received” sample . 7 Figure 6 Test Temperature after 3000 hour heat aging . 7 Figure 7 Test Temperature after 240 hour heat aging . 7 Figure 8 Characteristic Im

9、pedance 8 Figure 9 Insertion Loss requirement 8 Figure 10 Return Loss requirement 9 Figure 11 Conversion Loss requirement (LCL and LCTL) . 9 1. SCOPE This document covers un-shielded balanced single twisted pair data cable intended for use in surface vehicle cables for 100 Mbps Ethernet applications

10、. The tests in this document are intended to qualify cables for normal operation in an automotive environment while maintaining the necessary electrical properties for reliable data transmission. 1.1 Application The 100 Mbps cable is used for 100BASE-T1 Ethernet PHY applications. 2. REFERENCES 2.1 A

11、pplicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, T

12、el: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J1678 Low Voltage Ultra Thin Wall Primary Cable SAE EA-1128 Wire Color Charts 2.1.2 ISO Publications Copies of these documents are available online at http:/webstore.ansi.org/ ISO 6722-1 Road Vehicles - 60 V

13、and 600 V Single Core Cables - Test methods, dimensions and requirements. ISO 14572 Road vehicles - Round, sheathed, 60 V and 600 V screened and unscreened single - or multi-core cables - Test methods and requirements for basic- and high-performance cables 2.1.3 IEEE Publications Available from IEEE

14、 Operations Center, 445 and 501 Hoes Lane, Piscataway, NJ 08854-4141, Tel: 732-981-0060, www.ieee.org. IEEE 802.3bw 100BASE-T1 SAE INTERNATIONAL J3117 MAY2017 Page 3 of 13 2.1.4 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-295

15、9, Tel: 610-832-9585, www.astm.org. ASTM B5423 Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation ASTM B5374 Standard Test Methods for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation 2.2 General References Available from O

16、PEN ALLIANCE website. www.opensig.org OPEN ALLIANCE Definitions for Communication Channel (Version 2.0) 3. TERMS & DEFINITIONS For the purposes of this document, the following terms and definitions apply. 3.1 CROSSTALK A measurement of the unwanted signal transmitted from one aggressor circuit or ch

17、annel of a transmission system to the victim circuit or channel (for two or more channels in the same bundle). 3.2 IMPEDANCE (Z) The total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and u

18、sually expressed in ohms, denoted as: Z. 3.3 INSERTION LOSS (ATTENUATION) The loss of signal power resulting from the insertion of a device in a transmission line and is usually expressed in decibels (dB). This is the s-parameter defined as Sdd21 or Sdd12. 3.4 J-UTP Jacketed (sheathed) Un-shielded T

19、wisted Pair 3.5 LCL, LONGITUDINAL CONVERSION LOSS A ratio, expressed in decibels (dB), of the differential mode (DM) signal applied between the wires in a pair and the resulting common mode (CM) noise signal reflected at the same end. This is the s-parameter defined as Sdc11 and Sdc22. 3.6 LCTL, LON

20、GITUDINAL CONVERSION TRANSMISSION LOSS A ratio, expressed in decibels (dB), of the differential mode (DM) signal applied between the wires in a pair and the resulting common mode (CM) noise signal transmitted from one end to the other end. This is the s-parameter defined as Sdc21 and Sdc12. 3.7 LOW

21、VOLTAGE (LOW TENSION) Usually considered to be 60 V DC (25 V AC). 3.8 MINIMUM WALL (THICKNESS) The lowest allowable insulation thickness at any point. SAE INTERNATIONAL J3117 MAY2017 Page 4 of 13 3.9 NOMINAL A suitable approximate value used to designate or identify a component. 3.10 PHY Abbreviatio

22、n for the physical layer device. A PHY connects a link layer device to a physical medium such as a copper cable or optical fiber. A PHY chip (PHYceiver) is commonly found on Ethernet devices. Its purpose is to provide analog signal physical access to the link. 3.11 RETURN LOSS A ratio expressed in d

23、ecibels (dB) of the power of the outgoing signal to the power of the reflected or returned signal. This is the s-parameter defined as Sdd11 and Sdd22. 3.12 S-PARAMETER Single channel characteristics (port 1,2) RL Sdd11, Sdd22 Return Loss (differential mode) IL Sdd21 Insertion Loss (differential mode

24、) LCL Sdc11, Sdc22 Longitudinal Conversion Loss LCTL Sdc12, Sdc21 Longitudinal Conversion Transmission Loss 3.13 TCR, TEMPERATURE CLASS RATING A class designation based on the long term heat aging (3000 hour) test. 3.14 UTP Unshielded Twisted Pair 3.15 WCC Whole communication channel is the complete

25、 electrical wire connection between two ECUs. 4. GENERAL 4.1 Classification 4.1.1 Temperature Classes. Four cable classes have been defined in Figure 1 to respond to the various temperatures encountered on vehicles. Class Operating Temperature Equivalent to Temperature Class A -40 C to +85 C T1 B -4

26、0 C to +100 C T2 C -40 C to +125 C T3 D -40 C to +150 C T4 Figure 1 - Temperature class 4.2 General Test Conditions Test samples shall be preconditioned for at least 16 hours at a room temperature of 23 C 3 C. Unless otherwise specified, all tests shall be conducted at this same temperature. All sam

27、ples shall pass. In the case where the test result is based on an average, the average shall meet the requirement. SAE INTERNATIONAL J3117 MAY2017 Page 5 of 13 4.3 Ovens Unless otherwise specified, when an oven is required, it shall be a hot air oven in accordance with ASTM D5374 and D5423. The air

28、contained in the oven shall be completely changed at least 8 times but not more than 20 times per hour at the specified temperature. 4.4 Tolerances Unless otherwise specified, all values are considered to be approximate. 4.5 Representative Conductor Sizes for Testing When a test is required, all com

29、binations of conductor size, wall thickness, and insulation formulation shall meet the appropriate requirements. 5. GENERAL SPECIFICATIONS The finished cable shall meet the requirements for all tests specified in Figure 2 General Specifications for each cable type. Clause Description Initial tests P

30、eriodic tests(4) 5 GENERAL SPECIFICATIONS 5.1 Cable Types 5.1.1 Single Core ISO cable X(1) 5.1.2 Single Core SAE cable X(1) 5.1.3 Outer Jacket (Sheath) X(2) 5.2 Construction X X 5.3 Ovality of Jacket (Sheath) X(2) X(2) 5.4 Electrical Performance X X 5.4.2 Characteristic Impedance X X 5.4.3 Insertion

31、 Loss X X 5.4.4 Return Loss X X 5.4.5 Conversion Loss X X Annex B Communication Channel Performance X(3) Annex C Alien Crosstalk X(3) Notes: 1.Test the individual core cable to either the ISO 6722-1 or SAE J1678. 2.The usage of this test is established by agreement between customer and supplier. 3.T

32、his requirement is established between customer and supplier. Testing on heat aged samples are not required. 4.Electrical performance testing is not required on heat aged samples for Periodic Testing. Figure 2 - General specifications 5.1 Cable Types Each insulated conductor (of the UTP or J-UTP) sh

33、all meet the test and performance requirements of the following sections in ISO 6722-1 (2011) or SAE J1678 (2015). (Performance requirements include electrical, mechanical, and environmental requirements) 5.1.1 Single Core ISO cable The cable shall meet ISO 6722-1 (2011): Section 5.5 5.22. 5.1.2 Sin

34、gle Core SAE cable The cable shall meet SAE J1678 (2015): Section 6.3 6.16 SAE INTERNATIONAL J3117 MAY2017 Page 6 of 13 Figure 3 - Un-shielded balanced single twisted pair ethernet cable 5.1.3 Outer Jacket (Sheath) For the outer jacket (sheath) of the J-UTP cable, the test and requirements shall be

35、according to ISO 14572 (2011) Sections 5.5 and 5.7 5.21. 5.2 Construction The construction of the Ethernet Cable (UTP and J-UTP) will be according to Figure 4 below. UTP J-UTP SAE J1678 Size ISO 6722-1 Size Stranding Conductor OD (Max) Insulated Conductor OD1 Insulated Conductor OD1 Jacket OD2 (SAE

36、No.) (mm2) (mm) Min (mm) Max (mm) Min (mm) Max (mm) Max (mm) 26 0.13 7 0.55 0.76 0.91 0.8 0.95 3.5 24 0.22 7 0.70 0.95 1.05 1.05 1.2 3.5 22 0.35 7 0.90 1.2 1.4 1.3 1.5 4.5 20 0.5 19 1.1 1.35 1.6 1.55 1.78 5.0 NOTE 1: Insulated Conductor OD (for each core of the twisted pair) NOTE 2: The requirement

37、for the J-UTP is based on a round cable. Figure 4 - Ethernet cable construction 5.3 Ovality of Jacket (Sheath) The usage of this test is established by agreement between customer and supplier. 5.3.1 Test For a jacketed (sheathed) cable, the test and requirements shall be according to ISO 14572 (2011

38、), Section 5.2 “Ovality of Sheath”. 5.3.2 Requirement The maximum allowable “out of round” shall be 20%. SAE INTERNATIONAL J3117 MAY2017 Page 7 of 13 5.4 Electrical Performance Testing of the cables electrical performance shall be follows: Initial test of “as received” sample Test after long term 30

39、00 hour heat aging at TCR Test after short term 240 hour heat aging at TCR + 25 C The electrical performance tests can be done on a single sample or different samples from the same lot of twisted pair cable. The oven or test chamber does not have to meet the air exchange of 4.3. 5.4.1 Test Temperatu

40、re Initial Test on as received sample Test Temperature Test Temperature* Test Temperature* Impedance 23 C -40 C TCR IL 23 C -40 C TCR RL 23 C -40 C TCR LCL and LCTL 23 C -40 C TCR NOTE*: Condition the sample for at least 30 minutes at the test temperature. Figure 5 - Test temperature for Initial “as

41、 received” sample After 3000 hours heat aging Test Temperature Impedance 23 C IL 23 C RL 23 C LCL and LCTL 23 C Figure 6 - Test temperature after 3000 hour heat aging After 240 hours heat aging Test Temperature Impedance 23 C IL 23 C RL 23 C LCL and LCTL 23 C Figure 7 - Test temperature after 240 ho

42、urs heat aging 5.4.2 Characteristic Impedance 5.4.2.1 Test Test per OPEN Alliance “Definitions for Communication Channel (Version 2.0)” document. When testing at temperature extremes (-40 C & TCR), the sample shall be conditioned for 30 minutes at that temperature prior to testing. SAE INTERNATIONAL

43、 J3117 MAY2017 Page 8 of 13 5.4.2.2 Requirement The characteristic impedance shall be within the limit of Figure 8. Parameter Symbol Minimum (ohm) Nominal (ohm) Maximum (ohm) Impedance Z 90 100 110 Figure 8 - Characteristic impedance 5.4.3 Insertion Loss (IL) Test per OPEN Alliance “Definitions for

44、Communication Channel (Version 2.0)” document. When testing at temperature extremes (-40 C & TCR), the sample shall be conditioned for 30 minutes at that temperature prior to testing. 5.4.3.1 The requirement is shown in Figure 9. Figure 9 - Insertion loss requirement 5.4.4 Return Loss (RL) Test perO

45、PEN Alliance “Definitions for Communication Channel (Version 2.0)” document. When testing at temperature extremes (-40 C & TCR), the sample shall be conditioned for 30 minutes at that temperature prior to testing. SAE INTERNATIONAL J3117 MAY2017 Page 9 of 13 5.4.4.1 The requirement is shown in Figur

46、e 10. Figure 10 - Return loss requirement 5.4.5 Conversion Loss (LCL and LCTL) Test per OPEN Alliance “Definitions for Communication Channel (Version 2.0)” document. When testing at temperature extremes (-40 C & TCR), the sample shall be conditioned for 30 minutes at that temperature prior to testin

47、g. 5.4.5.1 The requirement is shown in Figure 11. Figure 11 - Conversion loss requirement (LCL and LCTL) Appendicies A, B, C are informative references, where the usages or applications are agreed between customer and supplier. SAE INTERNATIONAL J3117 MAY2017 Page 10 of 13 6. NOTES 6.1 Revision Indi

48、cator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the documen

49、t, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE CABLE STANDARDS COMMITTEE OF THE TRUCK AND BUS ELECTRICAL / ELECTRONIC STEERING COMMITTEE SAE INTERNATIONAL J3117 MAY2017 Page 11 of 13 APPENDIX A - EXAMPLES OF ROUND ETHERNET (J-UTP) CABLES A.Pressure B.Tubular with