1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 22, 20161UL 4000Outline of Investigation for High Speed CablesIssue Number: 3June 22, 2016Summary of TopicsThis third issue of the Outline of Investigation for High Speed Cables, UL4000, cov
2、ers the transmission performance evaluation of high speedcables and clarifies the requirements for the Ethernet and Audio Channel.ULs Outlines of Investigation are copyrighted by UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines
3、of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2016 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 22, 2016UL 40002N
4、o Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 References .53 Units of Measurement .54 Definitions 55 Construction 6PERFORMANCE6 High Speed Cable Assembly Physical Layer Electrical Characteri
5、stics .66.1 High-speed audio/video cable assemblies .67 Skew 77.1 General .77.2 Maximum cable assembly inter-pair skew .78 Differential Output Eye Mask .88.1 General .88.2 Apparatus .98.3 Preparation of DUT 108.4 Procedure 109 Insertion loss 119.1 General 119.2 Inter-pair differential insertion loss
6、 deviations .1110 Differential Input Return Loss 1310.1 General .1310.2 Apparatus .1310.3 Preparation of DUT .1310.4 Procedure .1410.5 Results .1411 HEAC HDMI Ethernet and Audio Return Channel (If Supported) 1411.1 General .1411.2 Apparatus .1611.3 Preparation of DUT .1611.4 Procedure .1611.5 Result
7、s .17MANUFACTURING AND PRODUCTION TESTS12 Continuity Test .17MARKINGS13 General 17JUNE 22, 2016 UL 4000 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPPENDIX AThe following tests are conducted for reference purposes onlyA1 Maximum Cable As
8、sembly Intra-pair Skew A1A1.1 Apparatus .A1A2 Preparation of DUT .A1A3 General .A1A3.1 General .A1A3.2 Procedure A1A4 Insertion Loss A2A4.1 General .A2A4.2 Differential insertion loss A2A4.3 Differential insertion loss deviations A4A5 Far-end Crosstalk A6A6 Differential Impedance A7A7 HEAC HDMI Ethe
9、rnet and Audio Return Channel (If Supported) .A7A7.1 Intra-pair skew .A7A7.2 Differential impedance A7JUNE 22, 2016UL 40004UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This Outline of Investigation describes the requi
10、rements used to evaluate the transmissionperformance of high speed cable assemblies.1.2 Four types of cable assemblies are covered by these requirements:a) Wire-only cables that contain no circuit component.b) Passive cables that contain only passive circuit components.c) Active cables that contain
11、active equalization circuit components with equalizer functions butdo not have converting, transmitting or receiving functions.d) Active cables that contain active circuit components that convert or amplify the signals andalso contain transmit and receive functions.2 References2.1 Any undated refere
12、nce to a code or standard appearing in the requirements of this outline shall beinterpreted as referring to the latest edition of that code or standard.3 Units of Measurement3.1 The unit of measure shall be SI. If a value for measurement is followed by a value in other units inparentheses, the secon
13、d value represents a direct conversion or an alternative value.4 Definitions4.1 For the purpose of this Outline, the following definitions apply.4.2 CABLE ASSEMBLY A cable and its accompanying connectors intended to be used for a specificpurpose.4.3 CROSSTALK A measure of the unwanted signal couplin
14、g from one pair into another pair.4.4 DUT Device Under Test.4.5 INSERTION LOSS The signal loss resulting from the insertion of a component, or link, or channel,between a transmitter and receiver (often referred to as attenuation).4.6 TMDS Transmission Minimized Differential Signaling.JUNE 22, 2016 U
15、L 4000 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5 Construction5.1 The length of a cable assembly shall be within 10 percent of the marked length when measuredfrom the face of one connector to the face of the connector at the far end of
16、 the cable.5.2 High-speed cable assemblies may be required to comply with specifications applicable to theirparticular configuration and use. Other national, international or private performance specifications,applicable to high-speed cables may also be used to evaluate high speed cables as describe
17、d in particularcertification programs.PERFORMANCE6 High Speed Cable Assembly Physical Layer Electrical Characteristics6.1 High-speed audio/video cable assemblies6.1.1 This section describes the physical layer electrical characteristics for high-speed audio/video cableassemblies. Cables are performan
18、ce rated according to their ability to transmit two different data rates;10.2 Gbps cables (3.4 Gbps per channel) and 18 Gbps cables (6 Gbps per channel).6.1.2 The measurements shown in Table 6.1 are to be made on high-speed audio/video cableassemblies.Table 6.1High-speed audio/video cable assembly e
19、lectrical characteristicsTest Section reference Wire b) A distinctive catalog number or the equivalent;c) The maximum data transmission rate tested;d) The designation with Ethernet may be marked when the HEAC channel of the cableassembly complies with the requirements described in HEAC HDMI Ethernet
20、 and AudioReturn Channel (If Supported), Section 11; ande) The length of the cable.13.2 Cable assemblies intended for shipment to original equipment manufacturers (OEM) shall have anyapplicable markings provided on the outer surface of the shipping carton, or on a tag or the equivalentinside the car
21、ton.13.3 If a manufacturer produces or assembles cable assemblies at more than one factory, a distinctivemarking, which may be in code, shall be provided such that the cable assembly can be identified as theproduct of a particular factory.JUNE 22, 2016 UL 4000 17UL COPYRIGHTED MATERIAL NOT AUTHORIZE
22、D FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 22, 2016UL 400018No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPPENDIX AThe following tests are conducted for reference purposes onlyA1 Maximum Cab
23、le Assembly Intra-pair SkewA1.1 ApparatusA1.1.1 The apparatus shall be as described in 7.2.2.A2 Preparation of DUTA2.1 The DUT shall be as described in 7.2.3.A3 GeneralA3.1 GeneralA3.1.1 The Intra-pair skew is defined as the absolute difference between the propagation delay of thepositive and negati
24、ve polarity wire within the same differential lanes. The Intra-pair skew shall be less thanindicated in Table A3.1.A3.2 ProcedureA3.2.1 The TDR is calibrated from minus 2 ns to 10 ns using electronic calibration.A3.2.2 The DUT is connected to the TDR via two module compliance boards and all unused l
25、anes areterminated to a 50 ohm load.A3.2.3 A single-ended impedance versus time measurement of the CLK channel is made for both thepositive (+) and negative () polarity.A3.2.4 This process is then repeated for each of the other signaling channels.Table A3.1Maximum cable assembly skewParameterTMDS Bi
26、t Rate3.4 Gbps 6 GbpsMaximum Intra-Pair Skew 150 psec 110 psecJUNE 22, 2016 UL 4000 A1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULA4 Insertion LossA4.1 GeneralA4.1.1 This section defines several parameters related to the attenuation of the
27、 cable assembly. Each ofthe following attenuation assembly parameters are to be measured on the CLOCK, DATA0, DATA1, andDATA2 differential channels of the assembly.A4.2 Differential insertion lossA4.2.1 GeneralA4.2.1.1 This test establishes the method to verify that all high speed signaling channels
28、 meet theminimum Insertion Loss requirements. The insertion loss, in dB, of each differential channel shall be lessthan the limit values defined in Table A4.1. The differential insertion loss limit is shown in Figure A4.2.A4.2.2 ApparatusA4.2.2.1 The apparatus shall consist of a Vector Network Analy
29、zer (VNA) and two Module/CableCompliance Boards as previously described.A4.2.3 Preparation of DUTA4.2.3.1 The DUT shall be connected as shown in Figure A4.1.This is generated text for figtxt.Figure A4.1Analyzer test setupJUNE 22, 2016UL 4000A2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD
30、UCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULA4.2.4 ProcedureA4.2.4.1 The Vector Network Analyzer (VNA) is calibrated from 10 MHz to 6.0 GHz in 10 MHz steps usingelectronic calibration.A4.2.4.2 The DUT is connected to the VNA via two module compliance boards and all unused lanes areterminated to
31、a 50 ohm load.A4.2.4.3 An S-parameter measurement of the CLK channel is made.A4.2.4.4 This process is then repeated for each of the other signaling channels.This is generated text for figtxt.Table A4.1Example insertion loss data pointsFrequency (MHz) Value (max) dB15825 52475 124126 205100 256000 29
32、.6Note: This table is for reference only. These discrete values are for formula cross referencing only. Use swept frequency forlimit calculation.Figure A4.2Differential insertion lossJUNE 22, 2016 UL 4000 A3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMIS
33、SION FROM ULA4.3 Differential insertion loss deviationsA4.3.1 GeneralA4.3.1.1 This test establishes the method to verify that all high speed signaling channels meet theminimum Insertion Loss Deviations requirement. The Insertion Loss Deviation ILD(f), in dB, of eachdifferential channel shall meet th
34、e limit values defined in the following equations, where f is the frequencyvalues defined in Table 6.2, in MHz. The ILD(f) limit is shown in Figure A4.4.ILD(f) ILDmin(f) = -1.0 - 0.5 x 10-3xfILD(f) ILDmax(f)=1.0+0.5x10-3xfA4.3.2 ApparatusA4.3.2.1 The apparatus shall consist of a Vector Network Analy
35、zer (VNA) and two Module/CableCompliance Boards.A4.3.3 Preparation of DUTA4.3.3.1 The DUT shall be connected as shown in Figure A4.3.This is generated text for figtxt.Figure A4.3Analyzer test setupJUNE 22, 2016UL 4000A4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WI
36、THOUT PERMISSION FROM ULA4.3.4 ProcedureA4.3.4.1 S-parameters for the CLK channel obtained in the test described in A4.2.4 are loaded.A4.3.4.2 The fitted insertion loss is calculated and the ILD is derived for that channel.A4.3.4.3 This process is then repeated for each of the other signaling channe
37、ls.A4.3.5 Results and calculationsA4.3.5.1 The Insertion Loss Deviation of each channel of the DUT shall be recorded.A4.3.5.2 The Insertion Loss Deviation ILD(f) is the difference between the measured insertion loss IL(f)and the fitted insertion loss ILfitted(f) as shown in the following equation, w
38、here ILfitted(f) is defined inA4.3.5.3.ILD(f) = IL(f) - ILfitted(f)A4.3.5.3 The fitted insertion loss as a function of frequency is given by the following equation. Thecoefficients (a0, a1, a2, a4) for the fitted insertion loss shall be calculated in A4.3.5.4.ILfitted(f)=a0+a1xf+a2xf+a4xf2A4.3.5.4 T
39、he weighted frequency matrix F is defined using the following equation.F=10-IL(f1)/20f1x10-IL(f1)/20f1x10-IL(f1)/20f12x10-IL(f1)/2010-IL(f2)/20f1x10-IL(f2)/20f1x10-IL(f2)/20f12x10-IL(f2)/2010-IL(fn)/20f1x10-IL(fn)/20f1x10-IL(fn)/20f12x10-IL(fn)/20A4.3.5.5 The weighted insertion loss vector L is defi
40、ned using the following equation.JUNE 22, 2016 UL 4000 A5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULL=IL(f1)x10-IL(f1)/20IL(f2)x10-IL(f2)/20IL(fn)x10-IL(fn)/20A4.3.5.6 The fitted insertion loss coefficients are then given by the following
41、 equation.a0=(FTF)-1FTLa1a2a4This is generated text for figtxt.A5 Far-end CrosstalkA5.1 This section defines the differential far-end crosstalk (FEXT) of the cable assembly. Far-endcrosstalk is to be measured on the CLOCK, DATA0, DATA1, and DATA2 differential channels of theassembly.Figure A4.4Diffe
42、rential insertion loss deviationJUNE 22, 2016UL 4000A6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULA5.2 For any given victim channel under test there will be three far-end crosstalk aggressors. Themaximum crosstalk, in dB, inflicted on the
43、victim channel from any aggressor is defined in the followingequation.FEX -20 for fmin ffmaxA6 Differential ImpedanceA6.1 This section defines the impedance requirements for the cable assembly. Differential Impedance isto be measured on the CLOCK, DATA0, DATA1, and DATA2 differential channels of the
44、 assembly. Forthe purpose of this measurement the rise time of the signal used to determine the Differential Impedancewill be 165 ps (10 90 percent).A6.2 Differential Impedance is measured on the cable assembly. The maximum impedance, in ohms, onany channel is defined in the following equation.DI =
45、100 Ohms 15%A7 HEAC HDMI Ethernet and Audio Return Channel (If Supported)A7.1 Intra-pair skewA7.1.1 For measurement of Intra-pair skew, the procedure will be the same as described in A3.2.A7.1.2 The Intra-pair skew, in picoseconds, of the HEAC channel shall not exceed 111 psec.A7.2 Differential impe
46、danceA7.2.1 For measurement of the differential impedance, the procedure will be the same as described inDifferential Impedance, Section A6.A7.2.2 The differential impedance is measured on the cable assembly. For the purpose of thismeasurement the rise time of the signal used to determine the differ
47、ential impedance will be 165 ps (10 90 percent).The maximum impedance, in ohms, on the HEAC channel is defined in the followingequation.DI = 100 Ohms 10%JUNE 22, 2016 UL 4000 A7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 22, 2016UL 4000A8No Text on This Page
