Test Report based on DIN EN ISO/IEC 1725: 25 GHMT Type Approval 2 Connector Permanent Link, Copper, Class EA according ISO/IEC 1181-1 Ed.1. Document-no: P582a-18-E This Test Report with the measurements consists of 37 pages. GHMT AG and the customer shall grant each other an unlimited right to copy and disclose this report insofar as the measuring results and specifications published are neither altered by way of including or removing information nor changed in a way that does not correspond to the original meaning of the report.
Table of Contents Table of Contents...2 Revision history...4 1 General statements...5 1.1 Test Laboratory... 5 1.2 Test Date... 5 1.3 Environmental conditions during testing... 5 1.4 Test Conducted by... 5 1.5 Persons Present at Test... 5 2 Customer...6 2.1 Address... 6 2.2 Responsible contact person... 6 3 Device under test (DUT)...7 3.1 Description of the Components... 7 3.2 Provision... 8 3.3 Definition of the Device Under Test (DUT)... 9 4 Test Type... 1 4.1 Reference of testing... 1 4.2 Definition of the testing parameters... 11 4.2.1 Insertion loss... 11 4.2.2 NEXT... 12 4.2.3 Power sum NEXT (PS NEXT)... 13 4.2.4 Attenuation to crosstalk ratio at the near-end (ACR-N)... 14 4.2.5 Power sum ACR-N (PS ACR-N)... 14 4.2.6 Attenuation to crosstalk ratio at the far-end (ACR-F)... 15 4.2.7 Power sum ACR-F (PS ACR-F)... 15 4.2.8 Return loss... 16 4.2.9 Propagation delay... 17 4.2.1 Delay skew... 18 4.2.11 Coupling attenuation... 19 5 Applied Standards... 21 5.1 Applied Rules and Regulations... 21 5.2 Applied Limits... 21 5.3 Deviations... 21 5.4 None Standardised Test Procedures... 21 6 Testing equipment... 22 7 Summary... 23 GHMT AG Bexbach/Germany page 2 of 37
8 ANNEX: Documentation of measurements... 24 8.1 SETUP... 25 8.2 Measurement results of the NF-parameters... 26 8.3 Measurement results of the HF-parameters... 27 8.4 Measurement results of the EMC-parameters... 36 GHMT AG Bexbach/Germany page 3 of 37
Revision history Document number Date Content/ Changes P582a-18-E 3.5.218 initial version GHMT AG Bexbach/Germany page 4 of 37
1 General statements 1.1 Test Laboratory GHMT AG In der Kolling 13 6645 Bexbach, Germany Phone: +49 / 68 26 / 92 28 Fax: +49 / 68 26 / 92 28 29 E Mail: info@ghmt.de Internet: www.ghmt.de 1.2 Test Date Receipt of goods: 9. May 218 Test number: 18-CS3 Testing from: 28. May 218 until: 3. May 218 during: (23 ± 3) C 1.3 Environmental conditions during testing Ambient temperature (23 ± 3) C Relative humidity (5 ± 25)% 1.4 Test Conducted by Mr. Roman Schwoll, GHMT AG Mrs. Judith Philippi, GHMT AG 1.5 Persons Present at Test Mr. Stefan Grüner, GHMT AG (present temporarily) GHMT AG Bexbach/Germany page 5 of 37
2 Customer 2.1 Address OPTRONICS PLUS LIMITED Grand Millennium Plaza, 151 181 Queens Road Central HONG KONG Phone: +852 588 2426 Internet: www.optronicsplus.net 2.2 Responsible contact person OPTRONICS PLUS LIMITED Mrs. Khushbu Solanki Application Engineer 42-44 Griva Digeni Avenue, Office 42 Nicosia 191 25665 Nicosia 1311, Cyprus Phone: +357 22 5 91 Fax: +357 22 5 91 E-Mail: khushbu.solanki@optronicsplus.net Internet: www.optronicsplus.net GHMT AG Bexbach/Germany page 6 of 37
3 Device under test (DUT) 3.1 Description of the Components The following sample(s) was/were part of the test: Data cable: Part-no: CAT6A U/UTP 23 AWG Cable OCC-6A-11-XXX Charge-no: - The cable was marked with an imprinted meter counter. Cable end A: 6m Cable end B: 96m Cable length: 9m (determined on imprinted length counter) Picture: GHMT AG Bexbach/Germany page 7 of 37
Connector: Part-no: CAT6A UTP Keystone Jack OKJ-6A-1-X Picture: Patch panel: Part-no: CAT6A UTP 1U 24 Port Patch Panel OPPC-6A-1-24 Picture: Condition of the sample(s): The sample(s) had no visible damages 3.2 Provision The DUT was / the specimens were... with drawn on site. The selection of the sample was neutral and unaffected by the client.... obtained by GHMT through resellers. The selection of the sample was neutral and unaffected by the client.... obtained by GHMT through the client. GHMT AG Bexbach/Germany page 8 of 37
3.3 Definition of the Device Under Test (DUT) According to the specifications laid down in the document ISO/IEC 1181-1 Ed. 1., a Permanent Link was assembled in order to conduct the test: End A Patch panel I: Connector I: Data Cable: 9m Connector II: Patch panel II: CAT6A UTP 1U 24 Port Patch Panel CAT6A UTP Keystone Jack CAT6A U/UTP 23 AWG Cable CAT6A UTP Keystone Jack CAT6A UTP 1U 24 Port Patch Panel End B Figure 1: 2-Connector Permanent Link GHMT AG Bexbach/Germany page 9 of 37
4 Test Type 4.1 Reference of testing Testing of transmission parameters of a 2 Connector Permanent Link according to the specifications Class EA in accordance with ISO/IEC 1181-1 Ed. 1.. The following parameters are part of this test: NF-parameters: Direct current (d.c.) loop resistance Direct current (d.c.) loop resistance unbalance HF-parameters: Insertion loss NEXT Power sum NEXT (PS NEXT) Attenuation to crosstalk ratio at the near-end (ACR-N) Power sum ACR-N (PS ACR-N) Attenuation to crosstalk ratio at the far-end (ACR-F) Power sum ACR-F (PS ACR-F) Return loss Propagation delay Delay skew EMC-parameters: Coupling attenuation Power sum alien NEXT (PS ANEXT) Power sum alien ACR-F (PS AACR-F) GHMT AG Bexbach/Germany page 1 of 37
4.2 Definition of the testing parameters 4.2.1 Insertion loss PAIR 1 PAIR 2 Near End Far End PAIR 3 PAIR 4 Definition The attenuation is determined by the ratio of the power supplied to the port A and the measured power at the port B as specified below: a V PA [db]= 1 log PB Both the input and the output of the two-port network must be terminated with the nominal impedance. Influencing variables In case of cables, the attenuation is primarily determined by the crosssectional area and the conductivity of the copper wires. Especially in high frequency ranges, the attenuation is increased by the dielectric losses of the core insulating material. The attenuation is dependent on the length, the frequency, and the temperature. Significance A low attenuation improves the transmission reliability of the cabling system. The attenuations of cables and connecting devices are accumulative although they are largely dominated by those of the cables. GHMT AG Bexbach/Germany page 11 of 37
4.2.2 NEXT PAIR 1 common mode / differential mode termination Near End PAIR 2 PAIR 3 Far End common mode / differential mode termination common mode / differential mode termination PAIR 4 common mode / differential mode termination Definition The near-end crosstalk attenuation is determined by the ratio of the power supplied to the port A and the measured power at the port B as specified below: a NEXT [db]= 1 P log P Both sides of the specimen must be terminated with the nominal impedance. In the event that the sender and the receiver are located at the same end of the specimen, we are speaking of near-end crosstalk (NEXT) attenuation. A B Influencing variables In case of cables, the near-end crosstalk attenuation is primarily determined by the twisting of the cores and (if existing) the paired foil screens. The near-end crosstalk attenuation is largely dependent on the frequency and to a minor degree also on the lengths. Significance A high near-end crosstalk attenuation improves the reliability of transmissions. Within the cabling system, the reliability of transmissions is primarily determined by the component having the lowest near-end crosstalk attenuation. GHMT AG Bexbach/Germany page 12 of 37
4.2.3 Power sum NEXT (PS NEXT) Definition The power sum of the near-end cross-talk is defined on the basis of the ratio of the power input at the three pairs A, B and C to the power output at pair D. The power-sum NEXT value of cables can be measured by means of a phase-correlated 4-port power splitter. On the basis of the pair-to-pair NEXT measurements, the power sum can also be calculated according to the following formula: a PSNEXT [db]= 1 log 3 i1 1 -,1 i a NEXT Influencing factors The power-sum NEXT value of cables is decisively influenced by the stranding and the foil pair shield (if applicable). Power-sum NEXT strongly depends on the frequency used and only to a minor extent on the cabling length. Meaning With regard to network protocols that distribute the bi-directional data load over all four pairs, power-sum NEXT is of great importance for transmission reliability since power-sum cross-talk is expected to impair transmission via the data channel. GHMT AG Bexbach/Germany page 13 of 37
4.2.4 Attenuation to crosstalk ratio at the near-end (ACR-N) Definition The ratio of the level of the incoming useful signal to the noise level at the opposite end of the measured link is referred to as Attenuation-to- Cross-Talk Ratio (abbr. ACR). ACR may be interpreted as the signal-to-noise ratio with the near-end cross-talk being regarded as the interfering signal or noise. ACR [db]= a N [db]-a V [db] Calculation As agreed, the ACR value is calculated for every frequency response of the near-end cross-talk with the two relevant frequency responses of the attenuation. Alternatively, the minimum value of the ACR calculation may be allocated for every measuring point of the two attenuation values involved. The determination of the double-ended system dynamics thus results in 12 ACR frequency responses for a four-pair specimen. Meaning The ACR value is of decisive importance to system designers, system manufacturers and operators of data communications equipment since it provides immediate insight into system dynamics and system reserve. The larger the distance between the useful signal and the noise signal over the entire frequency range, the larger the infrastructural reserve. 4.2.5 Power sum ACR-N (PS ACR-N) Definition The power sum of the ACR reserve is calculated as follows: PS ACR [db] = apsnext [db] av [db] Meaning With regard to network protocols that distribute the bi-directional data load over all four pairs, power-sum ACR is of great importance for transmission reliability since cross-talk is expected to impair transmission via the data channel. GHMT AG Bexbach/Germany page 14 of 37
4.2.6 Attenuation to crosstalk ratio at the far-end (ACR-F) Definition The equal-level far-end cross-talk (abbr. EL FEXT) is determined by the ratio of the power measured at the remote port B to the power measured at the remote port C. The measuring signal is supplied to the near end of the cable. a ELFEXT [db]= 1 P log P B C All pairs of the EUT are terminated with their characteristic impedance. Influencing factors The EL FEXT value of cables is decisively influenced by the stranding and the foil pair shield (if applicable). 4.2.7 Power sum ACR-F (PS ACR-F) EL FEXT strongly depends on the frequency used. Definition The power-sum EL FEXT value can be calculated on the basis of the pair-to-pair EL FEXT measurements according to the following formula: a PSELFEXT [db]= 1 log 3 i1 1 -,1 i a ELFEXT Meaning With regard to network protocols that distribute the bi-directional data load over all four pairs, power-sum EL FEXT is of great importance for transmission reliability since cross-talk is expected to impair transmission via the data channel. GHMT AG Bexbach/Germany page 15 of 37
4.2.8 Return loss PAIR 1 differential mode termination PAIR 2 differential mode termination Near End Far End PAIR 3 differential mode termination PAIR 4 differential mode termination Definition The return loss represents the ratio of the power supplied to the EUT to the power reflected by the EUT. a R [db] = 1 P log P input output The EUT end is terminated with the characteristic impedance in order to absorb any non-reflected power. The EUT and the test-value transmitter must have the same rated impedance in the broadband range. Influencing factors The return loss value of cables is decisively influenced by the homogeneity of the conductors and the core of the cable. Mechanical load during the manufacturing or installation of the cables may impair the return loss. The parameters return loss and characteristic impedance correlate. Meaning A high degree of return loss improves the transmission reliability. A low degree of return loss may lead to an unwanted overlap of returning signal components. GHMT AG Bexbach/Germany page 16 of 37
4.2.9 Propagation delay PAIR 1 PAIR 2 Near End Far End PAIR 3 PAIR 4 Definition The velocity of propagation v of cables is stated in relation to the maximum velocity of propagation of electromagnetic waves in the vacuum co. The parameter "Nominal Velocity of Propagation" (abbr. NVP) is defined as follows: NVP v co The delay is the period of time the signal requires in order to travel through a cabling link with a length of l. The delay is calculated on the basis of the NVP value (Nominal Velocity of Propagation) of the cable and the velocity of light c according to the following formula: l NVP c Influencing factors The delay of cables is decisively influenced by the dielectric loss of the core insulation material. This material-induced loss may be minimised by selecting various compounds and by varying the degree of foaming. The impact of colour addition on the NVP value is not to be neglected since the colours vary strongly in their dielectric constants, which are considerably higher than in the basic compound. GHMT AG Bexbach/Germany page 17 of 37
Influencing factors (continued) The velocity of propagation does not depend on the cable length and may be calculated on the basis of the measurement of the lengthdependent group delay. The reference length used for calculation is the cable length and not the lay length of the twisted pairs. Different lay length values in the four pairs lead to different NVP values. Meaning In order to ensure distortion-free signal transmission, the velocity of propagation must not fall below a lower limiting value, which is determined by the system requirements. The velocity of propagation has to be virtually independent of the frequency within the signal bandwidth in order to avoid a divergence of the spectral signal components. High-bit rate network protocols that use parallel data transmission via the four pairs, moreover, require a highly consistent velocity of propagation in order to avoid synchronisation errors. Future normative standards will define this so-called "delay skew". 4.2.1 Delay skew Definition The delay skew of cables with a length of l marks the time difference between signals travelling along the individual transmission links at the propagation velocity vi,j. = l vi v v v i j j Influencing factors The delay skew of cables is decisively influenced by the dielectric loss of the core insulation material and the various lay length values. Meaning The delay skew will be an important parameter for a distortion-free data transmission in balanced cables in view of future network protocols. GHMT AG Bexbach/Germany page 18 of 37
4.2.11 Coupling attenuation Definition Coupling Attenuation is the relation between the transmitted power through the conductor and the maximum radiated peak power, conducted and generated by the excited common mode currents. The measurement is independent of the bandwith and shall be measured form 3MHz up to 1GHz. Influencing factors The Coupling Attenuation is primarily determined by the mechanical structure of the component. The Coupling Attenuation is very much dependent on the frequency. Meaning The better the effectiveness of the Coupling Attenuation is, the smaller is the value of the noiseresistance. GHMT AG Bexbach/Germany page 19 of 37
4.2.12 Alien Crosstalk Definition The Alien Crossttalk is the signal coupling from pairs of disturbing channel or part thereof, to disturbed pair of another channel. GHMT AG Bexbach/Germany page 2 of 37
5 Applied Standards 5.1 Applied Rules and Regulations ISO/IEC 1181-1 Ed. 1.: 217-11 Information technology Generic cabling for customer premises 5.2 Applied Limits ISO/IEC 1181-1 Ed. 1.: 217-11 Information technology Generic cabling for customer premises Note: In Chapter 8 "ANNEX: Documentation of measurements", the applied limits are diagrammed within the measurement results. 5.3 Deviations None. 5.4 None Standardised Test Procedures None. GHMT AG Bexbach/Germany page 21 of 37
6 Testing equipment The following testing equipment was used for the measurements: Equipment Manufacturer Stock ID Network Analyzer I Rohde & Schwarz GHMTA2 Network Analyzer II Agilent GHMTA18 LCR-Meter Agilent GHMTA34 Time-Domain-Reflectometer Tektronix GHMTA4 Reference clamp GHMT GHMTA47 Absorbing Clamp Lüthi GHMTA7 Decoupling Clamp Lüthi GHMTA71 Switch unit Novotronic GHMTA28 Coaxial probe GHMT - Schedule 1: Measurement equipment GHMT AG Bexbach/Germany page 22 of 37
7 Summary Customer: OPTRONICS PLUS LIMITED 181 Queens Road Central HONG KONG Description: Data Cable: CAT6A U/UTP 23 AWG Cable Part-no: OCC-6A-11-XXX Connector: CAT6A UTP Keystone Jack Part-no: OKJ-6A-1-X Patch panel: CAT6A UTP 1U 24 Port Patch Panel Part-no: OPPC-6A-1-24 Applied standards: ISO/IEC 1181-1 Ed. 1.: 217-11 Information technology Generic cabling for customer premises Result: The sample meets the limits of the applied standards and regulations with respect to the parameters indicated above. The test results which were determined in the course of the measurement refer to the submitted specimen. Bexbach, 3. May 218 i.o. Stefan Grüner, engineer (Head of Accrediteded Test Laboratory) GHMT AG In der Kolling 13 D-6645 Bexbach info@ghmt.de www.ghmt.de GHMT AG Bexbach/Germany page 23 of 37
8 ANNEX: Documentation of measurements As follows the measurement results of the tested parameters defined in chapter 4.2. GHMT AG Bexbach/Germany page 24 of 37
8.1 SETUP HF parameters EMC parameters S11 S21 Coupling attenuation Output Power dbm dbm 7 dbm Frequency Range 1-7 MHz 1-7 MHz 3-1 MHz IF Filter 1 Hz 1 Hz 3 Hz NOP 161 161 971 AVG - - - Smoothing,3%,3%,3% GHMT AG Bexbach/Germany page 25 of 37
8.2 Measurement results of the NF-parameters 18-CS3 d.c. loop resistance Limit: 17,9 Ω PAIR 12 14,1 Ω PASS PAIR 36 13,58 Ω PASS PAIR 45 14,3 Ω PASS PAIR 78 13,92 Ω PASS DC Δ loop resistance Limit:,54 Ω Pairs 12-36,43 Ω PASS Pairs 12-45,2 Ω PASS Pairs 12-78,9 Ω PASS Pairs 36-45,45 Ω PASS Pairs 36-78,34 Ω PASS Pairs 45-78,11 Ω PASS GHMT AG Bexbach/Germany page 26 of 37
Attenuation [db] GHMT Type Approval 8.3 Measurement results of the HF-parameters Insertion loss -1-2 -3-4 Pair 12-5 Pair 36 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -6 1 1 1 1 GHMT AG Bexbach/Germany page 27 of 37
NEXT End B [db] NEXT End A [db] GHMT Type Approval NEXT (End A) -2-4 -6-8 Pairs 12-36 Pairs 12-45 -1 Pairs 12-78 Pairs 36-45 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 NEXT (End B) -2-4 -6-8 Pairs 12-36 Pairs 12-45 Pairs 12-78 -1 Pairs 36-45 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 28 of 37
PS NEXT End B [db] PS NEXT End A [db] GHMT Type Approval PS NEXT (End A) -2-4 -6-8 Pair 12-1 Pair 36 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 PS NEXT (End B) -2-4 -6-8 Pair 12-1 Pair 36 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 29 of 37
ACR End B [db] ACR End A [db] GHMT Type Approval ACR-N (End A) 4 2-2 -4-6 -8 Pairs 12-36 Pairs 12-45 Pairs 12-78 Pairs 36-45 -1 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 ACR-N (End B) 4 2-2 -4-6 Pairs 12-36 -8 Pairs 12-45 Pairs 12-78 Pairs 36-45 -1 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 3 of 37
PS ACR-N End B [db] PS ACR-N End A [db] GHMT Type Approval PS ACR-N (End A) 4 2-2 -4-6 -8 Pair 12 Pair 36-1 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 PS ACR-N (End B) 4 2-2 -4-6 -8 Pair 12 Pair 36-1 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 31 of 37
ACR-F End B [db] ACR-F End A [db] GHMT Type Approval ACR-F (End A) -2-4 -6-8 Pairs 12-36 Pairs 12-45 Pairs 12-78 -1 Pairs 36-45 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 ACR-F (End B) -2-4 -6-8 Pairs 12-36 Pairs 12-45 Pairs 12-78 -1 Pairs 36-45 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 32 of 37
PS ACR-F End B [db] PS ACR-F End A [db] GHMT Type Approval PS ACR-F (End A) -2-4 -6-8 Pair 12-1 Pair 36 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 PS ACR-F (End B) -2-4 -6-8 Pair 12-1 Pair 36 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA -12 1 1 1 1 GHMT AG Bexbach/Germany page 33 of 37
Return Loss End B [db] Return Loss End A [db] GHMT Type Approval Return loss (End A) -1-2 -3-4 Pair 12 Pair 36-5 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA RL information only -6 1 1 1 1 Return loss (End B) -1-2 -3-4 Pair 12 Pair 36-5 Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA RL information only -6 1 1 1 1 GHMT AG Bexbach/Germany page 34 of 37
Delay Skew [ns] Delay [ns] GHMT Type Approval Propagation delay 8, 7, 6, 5, 4, 3, 2, Pair 12 Pair 36 1, Pair 45 Pair 78 Limit ISO/IEC 1181-1 Class EA, 1 2 3 4 5 6 7 Delay skew 1, 1, 1, 1, Pairs 12-36 Pairs 12-45,1 Pairs 12-78 Pairs 36-45 Pairs 36-78 Pairs 45-78 Limit ISO/IEC 1181-1 Class EA,1 1 2 3 4 5 6 7 GHMT AG Bexbach/Germany page 35 of 37
PS ANEXT [db] Coupling Attenuation [db] GHMT Type Approval 8.4 Measurement results of the EMC-parameters Coupling attenuation Coupling attenuation (All In One) 1 2 3 4 5 6 7 8 9 Pair 12 Near End 18-CS3 1 Pair 12 Far End Pair 36 Near End 11 12 Pair 36 Far End Pair 45 Near End Pair 45 Far End 13 Pair 78 Near End Pair 78 Far End 14 Evaluation Envelope (CA= 45,66 db) 15 Limit ISO/IEC 1181-1 Alien NEXT met by design 16 1 2 3 4 5 6 7 8 9 1 Power sum alien NEXT (PS ANEXT) Pairs with 12 Pairs with 36-1 Pairs with 45 Pairs with 78-2 ISO/IEC 1181-1 -3-4 -5-6 -7-8 -9-1 1 1 1 1 GHMT AG Bexbach/Germany page 36 of 37
PS AACR-F [db] GHMT Type Approval Power sum alien ACR-F (PS AACR-F) Pairs with 12 Pairs with 36-1 Pairs with 45 Pairs with 78-2 ISO/IEC 1181-1 -3-4 -5-6 -7-8 -9-1 1 1 1 1 GHMT AG Bexbach/Germany page 37 of 37