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Network IQ Training Manual Chapter 4 - Fibre Optic Hardware

Network IQ Training Manual Chapter 4 - Fibre Optic Hardware. Fibre Optic Hardware. Common Hardware Selection Purpose of Hardware Location of Hardware Fibre Count Environmental considerations Common Termination Solutions Pigtail Splicing Field Installed connectors

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Network IQ Training Manual Chapter 4 - Fibre Optic Hardware

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  1. Network IQ Training ManualChapter 4 - Fibre Optic Hardware

  2. Fibre Optic Hardware Common Hardware Selection Purpose of Hardware Location of Hardware Fibre Count Environmental considerations Common Termination Solutions Pigtail Splicing Field Installed connectors Pre-terminated cable assemblies Recommended Installation Practices Termination Method Cable Management Routing within the cabinet Summary

  3. Purpose of Hardware Fibre optic hardware is used to: Provide protection to fibre terminations and/or splices Provide a location where patching and Moves, Adds and Changes (MACs) can take place Provide an end point to cables for testing purposes Intelligent patching actively monitors physical layer connections

  4. Fibre Count • Capacity of the hardware should match the fibre count of the cables being terminated • Capacity of a product is dictated by: • number of ports on the patching field • number of splices in the splice trays • number and size of cables (accessories for grounding and strain relieving) Fiber Count is 288 Direct Termination Hardware with Splice Option Fiber Count is 72

  5. Different Choices from small to DataCentre Local Area Network Hardware with low to medium density 24 – 288 fibre ports Data Centre Equipment – High Density in 1U – 4U up to over 3000 ports in 4U

  6. Location of Hardware • Hardware can be installed in a number of different locations • Inside a rack or cabinet • On a bare wall • Fitted into a wall mounted raceway or conduit • Fitted under a raised floor • Environment: indoor, outdoor, industrial Floor mountable hardware Rack mountable hardware Wall mountable hardware

  7. Environmental considerations Ingress Protection (IP) Rating • Is the hardware installed inside or outside? • Externally mounted hardware should be water tight • Ingress Protection requirements • Defined in EN 60529 • e.g. IP67 = ingress protection from dust and can be placed short-term under water • IP 69K defined in German DIN 40050-9 high-pressure (80-100bar) and steam (80°C) cleaning • In US: NEMA rating (National Electrical Manufacturers Association)

  8. Installation Recommendations Routing of cable to hardware Slack storage and management Cable Management Installation of cable into hardware • Pre-terminated cable installation • Field terminated cable installation

  9. Routing of Cable to Hardware Adequate containment for the cables should be provided either overhead or under the raised floor Power, fibre and copper cables are usually kept separated Containment can either be a solid plastic structure which fits together to create a pathway….. • …or can be a metal mesh framework that can be cut and shaped to create the pathway

  10. Slack Storage and Management Service loops should always be provided on the network Service loops allow the installer to: Work at a convenient location Reconfigure or move the hardware if required Re-terminate the cable in the event of errors Service loops should be: About 1.5m long In or under the server cabinet At every third floor in the building riser Where the main incoming cable enters the building If possible, service loops should be stored on the containment on dedicated tray work

  11. Cable Management • Most important sellable feature of optical hardware • Where end-user interface occurs • Helps to maintain fiber radius • Aids the overall management of the physical layer in the closet

  12. Cable Management from this….

  13. …to this structure

  14. Installation of Cables into Hardware Cable entry into the hardware is through either a cable gland or a slot in the hardware. Number, size and type of cable must be taken into account when choosing the hardware. Cables should be strain relieved to prevent damage to the exposed fibres should the cable be pulled. Provide strain relief accessories for all cable to be terminated Armoured cables requires grounding features and accessories Cable entry using PG gland Hardware specific strain relief

  15. Installation of Cables into Hardware

  16. Termination Methods There are three ways of terminating fibres within a piece of hardware Pigtail Splicing Accessories are required to house the splices Hardware should have the provision to hold the splice trays Hardware must have space to store cable or buffer tube slack Direct-/ Field termination Hardware must have space to store 900µm fibres or buffer tube fan out kits No additional accessories (eg. Splice trays) are required Pre-terminated cables Hardware must have a slotted cable entry feature (not glanded) Hardware must have space to store cable leg length

  17. Pigtail Splicing Field cables prepared and mounted in rear of panel; field fibres routed to splice cassettes Pigtail fibres prepared and routed to splice cassettes Splice cassettes selected with correct organizers: Heat shrink fusion protector Crimp fusion protector Mechanical splice Patching area (adapters) and pigtails Select connector style and fibre type

  18. Direct Termination Once cables are strain relieved, they can be stripped back to expose the fibres. Field installable connectors are then fitted and plugged into the adaptors. Loose tube cables require furcation tubing

  19. Pre-terminated, Modular System: Plug & Play/EDGE • Saves Installation Time • Factory Tested • Consists of 3 modular components • Trunk • Small diameter, high fibre count (up to • 144f) • Pulling grip protects connectors to • 45Kg • Harness • Break out MTP connector for direct • attach to actives • Module • Break out MTP connector to preferred • single-fibre connector at patch panel

  20. Installation of pre-terminated Cables into Hardware Furcation of pre-terminated cables requires “epoxy plug” Epoxy plug is typically strain-relief point of cable Hardware should have easy-to-install solutions for epoxy plug

  21. Direct buried (in-line) Handhole (in-line) (dome) Aerial (in-line) Pole mounting (dome) Closures Choice of closure determined by: Mounting Capacity Mid-span possibility Type of cables (accessories) Mounting: Direct buried/handhole Aerial Pole/wall (manhole) mounting Capacity determined by Number of splices Type of splice protectors Number and size of cables Number of buffer tubes Type of cables: Armoured (grounding features + grounding kits) Splice capacity: ≤ 168 (heat-shrink or crimp) Cables # ≤ 4; Ø ≤ 21 mm Buffer tubes ≤ 28 per side

  22. Summary - Fibre Optic Hardware Mounting Options Wall Floor Rack Termination Options Pigtail Splicing Direct Termination Pre-terminated Important Considerations During Installation Strain-relief of cable Proper fibre/cable routing Slack storage Environmental protection Closures Special Solutions (see Reference pages) Intelligent Hardware High Density

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