Aerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic test

This standard specifies a method of checking the ability of optical connection elements (including permanent connections) and fibre optic to withstand damp heat.
It shall be used together with EN 2591-100.

Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 6321: Optische Elemente - Feuchte Wärme, zyklische Prüfung

Diese Norm legt ein Verfahren zur Prüfung der Widerstandsfähigkeit von optischen Verbindungselementen (einschließlich dauerhaften Verbindungen) und LWL-Kopplern gegenüber feuchter Wärme fest.
Sie ist in Verbindung mit EN 2591-100 anzuwenden.

Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 6321: Organes optiques - Chaleur humide, essai cyclique

Aerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic test

General Information

Status
Published
Publication Date
30-Apr-2004
ICS
49.060 - Aerospace electric equipment and systems
Technical Committee
I08 - Imaginarni 08
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-2004
Due Date
01-May-2004
Completion Date
01-May-2004
Ref Project
EN 2591-6321:2002 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic test

Overview

EN 2591-6321:2002 is a CEN/AECMA aerospace test method that defines a damp heat, cyclic test for optical connection elements and fibre optic assemblies. The standard specifies how to check the ability of optical elements (including permanent connections) to withstand condensed moisture and cyclic temperature/humidity stresses. It is intended to be used together with EN 2591-100 (general test requirements).

Keywords: EN 2591-6321, damp heat cyclic test, optical elements, aerospace connectors, fibre optic testing, insertion loss, attenuation.

Key topics and technical requirements

  • Scope: Verifies durability of optical connection elements and terminated fibre under damp heat cycling.
  • Specimen preparation: Fit specimens with normal accessories, terminate per product standard, stabilize at standard test conditions for 24 h (EN 2591-100).
  • Pre-test measurements (if applicable):
    • Insertion loss (EN 2591-601).
    • Mating and unmating forces (EN 2591-408).
  • Test cycle (typical sequence):
    • Phase 1: Raise chamber to ~65 °C (±3 °C) and increase relative humidity to ≈95%; accomplish within 2 h.
    • Phase 2: Hold the high temperature/high humidity condition for 6 h.
    • Phase 3: Over ~16 h, progressively reduce temperature to about 38–40 °C while keeping relative humidity as high as possible and not below 85%.
    • The three phases together form one cycle; repeat the specified number of cycles.
  • Monitoring: Continuously monitor attenuation during the test using EN 2591-602 method A.
  • Post-test checks: Immediately after the last cycle measure mating/unmating forces (EN 2591-408) and perform visual examination (EN 2591-6101). Results must not exceed specified limits.
  • Apparatus notes: Test chamber must prevent condensed water dripping onto specimens; control of temperature and relative humidity is required. Temporary joints, LLS and LDS as per EN 2591-601 and EN 2591-100 may be used.

Practical applications and users

  • Intended for aerospace manufacturers, connector and fibre-optic component suppliers, environmental test laboratories, and quality/certification engineers.
  • Typical uses:
    • Qualifying optical connectors, receptacles and cable terminations for aircraft and spacecraft environments.
    • Verifying long-term optical performance (insertion loss, attenuation stability) under damp heat cycling.
    • Supporting product design, acceptance testing, and compliance with aerospace environmental requirements.
  • Benefits: Ensures reliability of optical links in humid and thermally varying aerospace operating conditions, reducing field failures from moisture ingress and thermal cycling.

Related standards

  • EN 2591-100 - General test methods for electrical and optical connections
  • EN 2591-601 - Optical elements - Insertion loss
  • EN 2591-602 - Variation of attenuation and optical discontinuity
  • EN 2591-408 - Mating and unmating forces
  • EN 2591-6101 - Visual examination

Use EN 2591-6321 for consistent, repeatable damp heat cyclic testing of aerospace optical connections to demonstrate environmental robustness and maintain optical performance.

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Frequently Asked Questions

SIST EN 2591-6321:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic test". This standard covers: This standard specifies a method of checking the ability of optical connection elements (including permanent connections) and fibre optic to withstand damp heat. It shall be used together with EN 2591-100.

This standard specifies a method of checking the ability of optical connection elements (including permanent connections) and fibre optic to withstand damp heat. It shall be used together with EN 2591-100.

SIST EN 2591-6321:2004 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 2591-6321:2004 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic testLuft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 6321: Optische Elemente - Feuchte Wärme, zyklische PrüfungSérie aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 6321: Organes optiques - Chaleur humide, essai cycliqueAerospace series - Elements of electrical and optical connection - Test methods - Part 6321: Optical elements - Damp heat, cyclic test49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 2591-6321:2002SIST EN 2591-6321:2004en01-maj-2004SIST EN 2591-6321:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2591-6321June 2002ICS 49.060English versionAerospace series - Elements of electrical and optical connection- Test methods - Part 6321: Optical elements - Damp heat,cyclic testSérie aérospatiale - Organes de connexion électrique etoptique - Méthodes d'essais - Partie 6321: Organesoptiques - Chaleur humide, essai cycliqueLuft- und Raumfahrt - Elektrische und optischeVerbindungselemente - Prüfverfahren - Teil 6321: OptischeElemente - Feuchte Wärme zyklische PrüfungThis European Standard was approved by CEN on 8 February 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2591-6321:2002 ESIST EN 2591-6321:2004
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