FTN design & development specification (D&D)
SP FTN (D&D) 011
Optical Fibre Terminations and Accessories
Issue 2, Jul 2003 · FTN D&D specs & typical drawings
Product spec for the FTN's optical termination kit: termination trays, uniters, patchcord management, cable manifolds and the rack, wall-box and free-standing housings they fit in. Designers use it to understand ODF capacity, tray rules and the space allowed in trackside housings and REBs.
Clause map — what each clause deals with
| 1 | Introduction | Background: the new FTN supporting GSM-R and operational circuits. |
| 2 | Abbreviations | Acronyms (ETSI, MBR, MTBF, REB, SU, ZHLS). |
| 3 | Glossary | Definitions of Access/Core Node, trackside housing, patchcord, pigtail and optical termination. |
| 4 | Scope | Covers termination components; patchcords and pigtails are in SP/FTN(D&D)/012. |
| 5 | Optical Termination Requirements | What an optical termination comprises (trays, superstructure, patchcords, pigtails, manifolds) and the 6x4 fibre cable it terminates. |
| 6 | Optical Fibre Termination Trays | Tray requirements: fibre bend radius control, protection and cover, storage capacity, splice protectors and capacity, fibre entry and transport tubes, ports, uniters, labelling, laser warnings. |
| 7 | Optical Connectors | Connector types on pigtails and ruggedised patchcords (tuned SC/APC and FC/PC) to IEC standards. |
| 8 | Optical Uniters | Uniter design for connector mating, vibration resistance, dust caps and cleaning instructions. |
| 9 | Optical Patchcord Management | What patchcord management must achieve: bend radius, no traction or torsion, tidy routing. |
| 10 | Termination Tray Inclusions | Trays come with four SC/APC uniters and cleaning instructions; pre-loaded pigtails optional. |
| 11 | Size of Termination (Compactness) | Space constraints for terminations in access nodes. |
| 11.1 | Optical Terminations in Active Trackside Equipment Housings | Rack space allowed in a trackside housing, fibre and cable capacity, 4 fibres per tray, and an indicative cabinet layout. |
| 11.2 | Optical Terminations in Access Nodes and Core Nodes in REBs | Wall-mounted cabinet requirements in REBs: glanding, cable diameters, wall space available, fibre capacity, working height and door lock. |
| 12 | Identification and Labelling | Termination identifier label format and clip-on collets for tube numbering. |
| 13 | Termination Mounting | The three mounting formats (ETSI rack sub-frame, wall cabinet, free-standing rack) and their environmental classes. |
| 14 | Extendability | Modular design so more tubes can be terminated later without disturbing live fibres. |
| 15 | Cable Manifolds | Manifold role: terminate inner sheath and clamp the CSM while passing fibres to trays; armour sealed with heatshrink before entry. |
| 16 | Environment | Environmental classes the equipment must withstand. |
| 17 | Product Acceptance and Supporting Information | Product acceptance status, railway use history, MTBF data and 30-year material life. |
| 18 | References | References to 010 and BR 967. |
| App A | Specification BR 967 | Copy of BR 967 environmental conditions spec (pages not in the text extract). |