oSIST prEN IEC 60794-1-122:2025

Optical fibre cables - Part 1-122: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Buffered fibre movement under compression in optical fibre cables for use in patch cords, Method E22

Lichtwellenleiterkabel – Teil 1-122: Fachgrundspezifikation - Grundlegende Prüfverfahren für Lichtwellenleiterkabel - Mechanische Prüfverfahren - Bewegung von ummantelten Fasern unter Komprimierung in Lichtwellenleiterkabeln zur Verwendung in Patchkabeln, Verfahren E22

Câbles à fibres optiques - Partie 1-122: Spécification générique - Procédures fondamentales d’essais des câbles optiques - Méthodes d’essais mécaniques - Mouvement des fibres sous revêtement protecteur sous l’effet d’une compression dans les câbles à fibres optiques utilisés comme cordons de brassage, Méthode E22

Optični kabli - 1-122. del: Splošna specifikacija - Osnovni preskusni postopki za optične kable - Mehanske preskusne metode - Premik zaščitenih vlaken pod pritiskom v optičnih kablih za uporabo v preveznih vrvicah, metoda E22

General Information

• Status: Not Published
• Public Enquiry End Date: 31-May-2025
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 26-Mar-2025
• Due Date: 13-Aug-2025
• Completion Date: 27-May-2025
• Ref Project: prEN IEC 60794-1-122 - Optical fibre cables - Part 1-122: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Buffered fibre movement under compression in optical fibre cables for use in patch cords, Method E22

Relations

• Splited From: SIST EN 60794-1-21:2015 - Optical fibre cables -- Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods (IEC 60794-1-21:2015)
• Effective Date: 09-Sep-2025
• Splited From: SIST EN 60794-1-21:2015/A1:2020 - Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods (IEC 60794-1-21:2015/A1:2020)
• Effective Date: 09-Sep-2025

Overview

prEN IEC 60794-1-122 (Method E22) specifies a uniform laboratory test for buffered fibre movement under axial compression in optical fibre cables intended for use in patch cords. This CLC/IEC committee draft defines the test objective, sample preparation, required apparatus, step-by-step procedure, pass/fail requirements and reporting details for assessing how compression-induced fibre movement affects attenuation and generates reaction force. It updates and replaces the previous Method E22 in IEC 60794-1-21:2015.

Key topics and technical requirements

• Test objective: Measure attenuation change and reaction force when a buffered fibre moves under axial compression only.
• Sample preparation: 5.0 m finished cable sample with 2.0 m sheath removed at each end, leaving a central 1.0 m sheathed section.
• Apparatus:
  • Cable fixing device and a fibre chuck with adjustable travel; fixed distance between chuck and cable end = 7 mm.
  • Load cell for reaction force monitoring (maximum error ±3%).
  • Attenuation monitoring per IEC 60793-1-46 (e.g., power meter).
• Procedure highlights:
  • Test under standard atmospheric conditions (see IEC 60794-1-2).
  • Compression distance typically 1.0 m (or as specified by a detailed specification).
  • Chuck moved toward fixed cable end at specified rate; multiple cycles permitted if specified.
  • Continuous monitoring of attenuation change and reaction force during movement.
• Pass/fail criteria: Change in attenuation and reaction force shall not exceed values defined in the applicable detailed specification.
• Specification & reporting: The relevant specification must state compression distance, allowable attenuation change, number of movements, and allowable reaction force. Test reports must include these items plus cable description, measured forces/distances, attenuation results and any deviations.

Applications and practical value

• Quality control and type qualification for patch cord and short-length assemblies that use buffered fibres.
• Performance verification during product development and R&D for connectorized cables and pre-terminated leads.
• Supplier acceptance testing and compliance checks for procurement and contract specifications.
• Useful for test laboratories, cable manufacturers, OEMs of telecommunication equipment, and standards committees specifying mechanical requirements.

Who should use this standard

• Cable designers and manufacturers producing patch cords and buffered-fibre assemblies.
• Test laboratories performing mechanical and optical reliability testing.
• Procurement engineers and quality assurance teams specifying acceptance criteria.
• R&D teams validating new buffering materials, jacketing, or assembly methods.

Related standards

• IEC 60794-1-1 (generic / general)
• IEC 60794-1-2 (basic optical cable test procedures – general guidance)
• IEC 60793-1-46 (attenuation monitoring methods)

Keywords: optical fibre cables, buffered fibre movement, compression test, patch cords, IEC 60794, Method E22, attenuation, reaction force, cable testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2025
Optični kabli - 1-122. del: Splošna specifikacija - Osnovni preskusni postopki za
optične kable - Mehanske preskusne metode - Premik zaščitenih vlaken pod
pritiskom v optičnih kablih za uporabo v preveznih vrvicah, metoda E22
Optical fibre cables - Part 1-122: Generic specification - Basic optical cable test
procedures - Mechanical tests methods - Buffered fibre movement under compression in
optical fibre cables for use in patch cords, Method E22
Câbles à fibres optiques - Partie 1-122: Spécification générique - Procédures
fondamentales d’essais des câbles optiques - Méthodes d’essais mécaniques -
Mouvement des fibres sous revêtement protecteur sous l’effet d’une compression dans
les câbles à fibres optiques utilisés comme cordons de brassage, Méthode E22
Ta slovenski standard je istoveten z: prEN IEC 60794-1-122
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

86A/2545/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 60794-1-122 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-03-21 2025-06-13
SUPERSEDES DOCUMENTS:
86A/2476/CD, 86A/2543/CC
IEC SC 86A : FIBRES AND CABLES
SECRETARIAT: SECRETARY:
France Mr Laurent Gasca
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
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final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Optical fibre cables - Part 1-122: Generic specification - Basic optical cable test procedures -
Mechanical tests methods - Buffered fibre movement under compression in optical fibre cables
for use in patch cords, Method E22

PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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IEC CDV 60794-1-122 ED1 © IEC 2025 2 86A/2545/CDV

1 CONTENTS
4 FOREWORD . 3
5 1 Scope . 5
6 2 Normative references . 5
7 3 Terms and definitions . 5
8 4 Method . 5
9 4.1   Object . 5
10 4.2  Sample . 5
11 4.3  Apparatus . 5
12 4.4  Procedure . 6
13 4.5  Requirements . 7
14 4.6  Details to be specified . 7
15 4.7  Details to be reported . 7
19 Figure 1 – Test set-up for fibre movement under compression . 6
IEC CDV 60794-1-122 ED1 © IEC 2025 3 86A/2545/CDV

21 INTERNATIONAL ELECTROTECHNICAL COMMISSION
22 ____________
24 OPTICAL FIBRE CABLES
25 Part 1-122: Generic specification - Basic optical cable test procedures–
26 Mechanical test methods - Buffered fibre movement under compression in
27 optical fibre cables for use in patch cords, Method E22
29 FOREWORD
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