Introduction to Key Principles of Telecommunications Cabling

Transcription

1 Introduction to Key Principles of Telecommunications Cabling Dimitris Filippou Technical Director, Ltd. IEEE Member, BICSI Country Chair, ELOT Technical Committee TC93 Member, CENELEC TC215 Delegate of Greek National Committee, CENELEC TC215 WG1, WG2 & WG3 Member

2 Dimitris Filippou Standards Activity Member TC215 WG1: Cabling Design TC215 WG2: Cabling Installation QA and Installation Practices TC215 WG3: Facilities and Infrastructures for Data Centres Delegate TC215: Electrotechnical Aspects of Telecommunications Equipment Dimitris Filippou Technical Director I2QS Ltd. Tel.: Mob.: BICSI IEEE Member TC93: Internal Networks of Electronic Communications for Houses and Buildings Country Chair Member Standard Committee for Cabling Design & Installation

3 Standards What are Standards? Standards represent the minimum required to maintain compliance. Principally about achieving minimum performance from products / standards driven by applications not end users. Standards are considered to be living documents. It is important that the region specific standards are quoted in the design and implementation.

4 Regional Standard Bodies Who are the national or regional standard bodies? USA INTERNATIONAL EUROPE ANSI/TIA ISO/IEC CENELEC The International Organization for Standardization (ISO) produces worldwide standards generated by country members. European Committee for Electrotechnical Standardization CENELEC produces European standards generated by EU country members. American National Standards Institute (ANSI) produces North American standards.

5 Who Else Is Out There? Standards and guidance is generated to support Design, Implementation, Methods and Products Interoperability. There are many ways of doing the job: Trade Bodies and Standards publication. ETSI (European Telecommunications Standards Institute). ITU (International Telecommunications Union). IEEE (Institute of Electrical and Electronics Engineers, Inc). Manufacturers recommendations. Methods Manuals. Design Guidelines.

6 Cabling Design Standards CLC ISO/IEC ANSI/TIA General Requirements EN C.0, C.2, C.3, C.4 Office Premises EN C.1 Industrial Premises EN A Homes EN C Data Centres EN A Distributed Building Services EN A

7 Cabling Link/Channel Configuration Interconnect Model Channel = 100m Link EQP EQP Cord C Horizontal Cable CP CP Cable TO WA Cord TE Crossconnect Model Channel = 100m Link EQP EQP Cord C Patch Cord C Horizontal Cable CP CP Cable TO WA Cord TE

8 Fundamental Principles ISO/IEC CLC ANSI/TIA Components Links/Channels Components Links/Channels Class A Class B Category 5 Category 6 Category 6 A Class C Class D Class E Class E A Performance Category 3 Category 3 Category 5 Category 5 Category 6 Category 6 Category 6A Category 6A Category 7 Class F Category 7 A Class F A Frequency Frequency

9 Fundamental Principles (cont.) ISO/IEC CLC ANSI/TIA Modular Plug/cord Modular Connector Category A 7 7 A Modular Plug/cord Modular Connector Category A 6 A Category 3 3 Category 5 5 Category 5 5 Category 6 6 Category 6 6 Category 6 A 6 A Category 6 A 6 A Category 7 7 Category 7 A 7 A Connection Category Connection Category Cables and connections of different Categories may be mixed within a channel, however the resultant cabling performance will be determined by the Category of the lowest performing component.

10 Cabling Installation Standards CLC ISO/IEC ANSI/TIA Specification and QA EN Inside Buildings EN Outside Buildings EN Partial Coverage in 569-C 758-C Administration TR B Explicit requirements of EN series but covering all telecommunications cabling Explicit requirements of ISO/IEC series Implicit requirements of ANSI/TIA-568 series Remote Powering CLC TR

11 Telecommunications Bonding Standards CLC ISO/IEC ANSI/TIA EN 50310: : B Application of equipotential bonding and earthing in buildings with information technology equipment Information technology Telecommunications bonding networks for buildings and other structures Generic telecommunications bonding and grounding (earthing) for customer premises

12 CENELEC

13 Highlight from EN Introduces the concept of environmental classification M.I.C.E. (Mechanical, Ingress, Climatic and Chemical, Electromagnetic). Environmental Class Mechanical rating M 1 M 2 M 3 Ingress rating I 1 I 2 I 3 Climatic and chemical rating C 1 C 2 C 3 Electromagnetic rating E 1 E 2 E 3 The requirements of a given classification cover the requirements of a lower classification, i.e. channels designed to operate under environmental conditions defined by M 2 shall continue to operate under environmental conditions by M 1. Specifies Channels for balanced and optical fibre cabling media. Specifies channels for coaxial cabling. Specifies the minimum component requirements in support of these cabling elements. Provides a list of applications supported by generic cabling systems.

14 Highlights from EN Classes for balanced cabling: Class A: specified up to 0.1MHz; Class B: specified up to 1MHz; Class C: specified up to 16MHz; Class D: specified up to 100MHz; Class E: specified up to 250MHz; Class E A : specified up to 500MHz; Class F: specified up to 600MHz; Class F A : specified up to 1000MHz. Channels of a given Class will support all applications of a lower Class. Classes for coaxial cabling: Class BCT-B: specified up to 1000MHz. The insertion loss performance of BCT-B cabling is further subdivided into three sub-classes, L, M and H.

15 Highlights from EN Optical fibre: It is important to know that CENELEC cable attenuation specifications are for cabled optical fibre (finished product) not raw glass optical fibre. Introduction of plastic optical fibre (OP1 & OP2) and plastic clad silica optical fibre (OH1) cables for the industrial and residential cabling standards. New optical fibre Category OM4. New Singlemode fibre type introduced OS2 (zero water peak fibre). New connecting hardware requirements, defines both a new interfaces for 2 optical fibres, 12 and for 24 fibres. New color for connector identification: Multimode: beige or black; Singlemode (Physical Contact): blue; Singlemode (Angled Physical Contact): green. Losses for connectors have more than one value: 50% of mated connections shall be better than 0.35dB loss; 0.5dB for 95% of matings; 0.75dB for 100% of matings.

16 New EN Data Center Design Standard CLC TC215 WG3 has started a new project EN Data Centre facilities and infrastructures: EN Part 1: General concepts. EN Part 2-1: Building construction. EN Part 2-2: Power distribution. EN Part 2-3: Environmental control. EN Part 2-4: Telecommunications cabling infrastructure. EN Part 2-5: Physical security. EN Part 2-6: Management and operational information. EN Part 3-1: General design principles. EN Part 3-2: Measurements methodologies, test methods and report formats. This series of European Standards does not address the selection of information technology and network telecommunications equipment, software and associated configuration issues.

17 ISO/IEC

18 Highlights from ISO/IEC Amd.1 New parameters introduced to cover the Alien Crosstalk terminology: AACR-F, Attenuation to alien crosstalk ratio at the far-end; ACR-F, Attenuation to crosstalk ratio at the far-end; ACR-N, Attenuation to crosstalk ratio at the near-end; ANEXT, Alien near-end crosstalk (loss); AFEXT, Alien far-end crosstalk (loss). ALTCTL, Equal level TCTL. PS AACR-F, Power sum attenuation to alien crosstalk ratio at the far-end. PS AACR-Favg, Average power sum attenuation to alien crosstalk ratio at the far-end. PS ACR-F, Power sum attenuation to crosstalk ratio at the far-end. PS ACR-N, Power sum attenuation to crosstalk ratio at the near-end. PS AFEXT, Power sum alien far-end crosstalk (loss). PS AFEXTnorm, Normalized power sum alien far-end crosstalk. PS ANEXT, Power sum alien near-end crosstalk (loss). PS ANEXTavg, Average Power sum alien near-end crosstalk (loss).

19 Highlights from ISO/IEC Amd.2 Copper Cabling Items Defines the component, Link and Channel performance for balanced twisted pair copper. Cable impedance 100Ω for Classes D to F A or 120Ω for Classes A to C. Class C up to 16MHz; Class D up to 100MHz; Class E up to 250MHz; Class E A up to 500MHz; Class F up to 600MHz; Class F A up to 1000MHz. Component definitions for Category 6 A and Category 7 A to make Class E A, Class F A Links and Channels. Nominal conductor diameter for copper cabling 0.5 to 0.65mm. Current carrying capacity modified to allow provision for Power over Ethernet Plus and recognition of the temperature effects where cables are bundled.

20 Highlights from ISO/IEC Amd.2 Copper Cabling Items New IEC definitions of cable construction/design with corresponding IEC definitions for performance.

21 Highlights from ISO/IEC Amd.2

22 Questions Dimitris Filippou Technical Director, Ltd. IEEE Member, BICSI Country Chair, ELOT Technical Committee TC93 Member, CENELEC TC215 Delegate of Greek National Committee, CENELEC TC215 WG1, WG2 & WG3 Member