BS EN 4641-104-2010 PDF

Full title and description

Aerospace series - Cables, optical 125 µm diameter cladding - Part 104: Semi-loose, ruggedized duplex construction 62,5/125 µm GI fibre nominal, 4,95 mm outside diameter - Product standard. This document specifies the product characteristics and product-level requirements for a ruggedized duplex optical cable intended for aerospace use.

Abstract

EN 4641-104:2010 is a CEN product standard that defines the construction, required characteristics, qualification, acceptance and quality-assurance provisions for a semi-loose, ruggedized duplex optical cable using 62,5/125 µm graded-index (GI) fibre with a nominal finished cable outside diameter of approximately 4.95 mm. The standard is intended to ensure interoperability, performance and traceable production and test requirements for aerospace cable suppliers and integrators.

General information

• Status: Definitive / published European Standard (adopted as national variants, e.g., BS EN).
• Publication date: 2010 (CEN approval 2 July 2010; national adoptions published around Dec 2010 — BSI listing shows 31 Dec 2010; NEN shows 1 Dec 2010). Exact dates vary by national body.
• Publisher: CEN (European Committee for Standardization); published/adopted by national bodies (examples: BSI as BS EN, NEN, DIN).
• ICS / categories: Aerospace electrical equipment and systems / on-board equipment: ICS codes cited in related records include 49.060 and 49.090.
• Edition / version: EN 4641-104:2010 (2010 edition; national adoptions carry the same year).
• Number of pages: EN core text records show ~11 pages for the EN version; some national adoptions (BS) list a longer PDF/published format (e.g., 16 pages) depending on national cover pages and forewords.

Scope

This product standard covers the definition, required characteristics and tests for a semi‑loose, ruggedized duplex optical cable built around 62,5/125 µm graded-index glass fibre (GI) with 125 µm cladding diameter and a nominal finished cable outside diameter of approximately 4.95 mm. It specifies construction details, dimensional limits, optical and mechanical requirements, qualification and acceptance tests, quality assurance and marking/documentation needed for aerospace applications. The standard is limited to the cable type described (duplex, ruggedized, semi‑loose construction) and does not replace system-level installation or interface standards.

Key topics and requirements

• Defined cable construction (semi‑loose, duplex) and nominal dimensions (fibre type 62,5/125 µm GI; cable OD ≈ 4.95 mm).
• Optical performance requirements (attenuation, numerical aperture and related optical properties at specified wavelengths).
• Mechanical and environmental performance (tensile, bending, temperature range, vibration and shock tests relevant to aerospace use).
• Qualification, acceptance and sampling rules for production batches and acceptance testing.
• Materials and construction notes to ensure repeatable, traceable manufacturing and compatibility with aerospace harnessing practices.
• Marking, documentation and quality-assurance provisions required for supplier deliverables.

Typical use and users

Primary users are aerospace and defense OEMs, aircraft integrators, cable and harness manufacturers, procurement/specification engineers, test laboratories and regulatory/qualification personnel responsible for onboard communications and avionic wiring. The standard is used to specify cable purchase requirements, to qualify supplier products and to define acceptance criteria during production and incoming inspection.

Related standards

EN 4641-104 is part of the EN 4641 product-standard series for aerospace optical cables. Closely related parts include EN 4641-102 (semi-loose 62,5/125 µm GI fibre, nominal 1.8 mm OD), EN 4641-103 (semi-loose ruggedized simplex construction, different OD variants), EN 4641-101 (tight structure/other diameter variants) and other parts of the EN 4641 family which specify different constructions and diameters. National adoptions (BS EN, DIN EN, NEN, LST, etc.) publish the same EN content with national forewords.

Keywords

Aerospace optical cable; 125 µm cladding; 62,5/125 µm GI fibre; semi-loose; ruggedized; duplex cable; EN 4641; product standard; qualification; acceptance; BSI; CEN.

FAQ

Q: What is this standard?

A: EN 4641-104:2010 is a CEN product standard defining a semi‑loose, ruggedized duplex optical cable (62,5/125 µm GI fibre, nominal OD ≈ 4.95 mm) for aerospace applications.

Q: What does it cover?

A: It covers cable construction, required optical and mechanical characteristics, qualification and acceptance testing, quality assurance, marking and documentation specific to the duplex ruggedized cable variant. It is a product-level specification, not a system wiring installation standard.

Q: Who typically uses it?

A: Aerospace and defence OEMs, cable and harness manufacturers, procurement/specification engineers, and test/qualification laboratories use it to specify, qualify and accept cable products for aircraft and related platforms.

Q: Is it current or superseded?

A: The EN 4641-104 document is dated 2010 and was adopted by national bodies in 2010; available records show the 2010 edition as the published EN text and national adoptions (e.g., BS EN). Users should verify the current status with CEN or their national standards body (BSI, NEN, DIN, etc.) for any amendments or later revisions before use.

Q: Is it part of a series?

A: Yes — EN 4641 is a multi‑part aerospace product-standard series covering various optical cable constructions and diameters (parts such as 101, 102, 103, 104, etc.). Each part addresses a specific construction/diameter variant.

Q: What are the key keywords?

A: Aerospace, optical cable, 125 µm cladding, 62,5/125 µm, GI fibre, semi‑loose, ruggedized, duplex, product standard, qualification, acceptance.