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Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN 50289-1-6 1- 1 Background, content.

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Presentation on theme: "Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN 50289-1-6 1- 1 Background, content."— Presentation transcript:

1 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Background, content and future of the EMC measurement standard EN Correlation between radiated immunity and coupling attenuation Michiel Pelt

2 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN New standards on cables  EN50288-X-Y: Multi-element cables use in analogue and digital communication and control  Sectional specifications  EN X-Y: Communication cables - Specification for test methods  Electrical, mechanical, environmental test methods  EN X-Y: Communication cables  Common design rules, quality assessment

3 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Need for new test method  No test methods for:  combined effect of balance and screening  comparing UTP, ScTP, FTP, STP,....  connecting hardware, cable assemblies and channels  balance at higher frequencies

4 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Members of CLC TC 46X WG3  Test Laboratories  GHMT in Germany  DELTA and 3P in Denmark  Cable Manufacturers BEDEA, BICC, COMMSCOPE, AVAYA, NEXANS NEK/CDT etc.  User and others ACS, IBM, BT, Helsinki University,Telesafe etc.

5 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Work done by CLC TC 46X WG3  EN t Existing EMC test methods for CABLES t Coupling attenuation => NEW !!!  Pr EN (ongoing) t Coupling attenuation on patch cords / cable assemblies  Pr EN (ongoing)  Coupling attenuation on connecting hardware  Pr EN (ongoing) t Attenuation unbalance

6 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Outline  Physical basics of cable screening  Measurement Procedures of EN  Transferimpedance  triaxial method, Wire injection method  Screening attenuation  triaxial method (clamp method = coupling attenuation)  Coupling attenuation  Clamp methods (triaxial method exists but not in standard)

7 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Equivalent circuit for general coupling transfer function Z 2,  r2, v 12,  2 Z 1,  r1, v 1,  1

8 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Transfer impedance Z T

9 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Capacitive coupling impedance Z F

10 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Effective transfert impedance Z F

11 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Coupling transfer function For matched lines:

12 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN The summing function ( l f) cn ( l f) cf far near S ( l f) 20 dB/decade

13 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Calculated coupling transfer function frequency dB L=1 m  r1 =2,3  r2 =1,0 Z F =0

14 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Screening attenuation a s

15 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Relation between Z TE and a S Normalised conditions: Z S =150   v/v  =10%or  r1 /  r2n =1,21

16 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN What is coupling attenuation a C The coupling between symmetrical (balanced, differential mode) cables and the surrounding is dependent on  the balance to ground of the pair and  the efficiency of the screen.

17 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Transfer impedance, triaxial test set-up Frequency range: DC to 100 MHz

18 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Transfer impedance, injection wire set-up, (far end) 1 Networkanalyzer5 cable under test 2 attenuator 20 dB6 adhesive tape 3 power splitter7 termination load 4 matching pads8 injection wire Frequency range: DC to 3 GHz

19 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Screening attenuation, triaxial set-up Frequency range: 30 MHz to 4 GHz

20 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Coupling attenuation, absorbing clamp set-up, (near end) Frequency range: 30 MHz to 1 GHz

21 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Summary  wire injection method transfer impedance  clamp methods screening attenuation, coupling attenuation  triaxial method transfer impedance, screening attenuation, coupling attenuation

22 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Screening attenuation, absorbing clamp set-up, (near end) Frequency range: 30 MHz to 1 GHz (0,5 to 2,5 GHz) MDS 21 MDS 22

23 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Screening attenuation, injection clamp set-up, (near end) Frequency range: 100 KHz to 1 GHz EM 101

24 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Coupling attenuation, injection clamp set-up, (near end) Frequency range: 100 KHz to 1 GHz

25 Michiel Pelt, Nexans Cabling Solutions, Alsembergsestw 2b3, B-1501 Buizingen, Belgium Background, content and future of EN Coupling attenuation, triaxial set-up Frequency range: 30 MHz to 3 GHz


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