IEC 61300 2 35 Edition 2 0 2014 03 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2 35 Tests – Ca[.]
Design of the apparatus
The apparatus conducts a nearly torque-free flexing rotation of the cable near the Device Under Test (DUT) in a conical trajectory, aligning the cone's axis with the specimen's longitudinal axis A tensile force is exerted on the cable during this rotation, and either the DUT or the deflection unit can rotate based on the apparatus's design Illustrative examples of the testing apparatus are provided in Figures 1, 2, and 3.
Figure 1 – Test apparatus with vertical rotating DUT
The test apparatus in Figure 1 consists at least of the following elements: a) rotating clamping device; b) pulley; c) weight for the tensile force
The pulley size must not introduce extra attenuation during the connector's rotation, and its design should maintain a consistent load at the connector To determine the maximum radius of the pulley, considering the permissible variation of the cone angle, the following equation should be used.
A is the deflection angle (°) ; ±10% allowable tolerance of conical path length was assumed
Figure 2 – Test apparatus with horizontal rotating DUT
The test apparatus in Figure 2 consists of at least the following elements:
3) weight for the tensile force
The cable should be able to move freely and be driven to rotate such that its absolute orientation is maintained
Figure 3 – Test apparatus with rotating deflection unit
The test apparatus in Figure 3 consists of at least the following elements: i) fixed clamping device; ii) deflection unit; iii) weight for the tensile force
The cable should be able to move freely and be driven to rotate such that its absolute orientation is maintained.
Optical measurements
For active monitoring, the measuring equipment outlined in IEC 61300-3-3 must be connected to the specimen to assess optical performance throughout the test Additionally, the optical source and detector utilized for measuring attenuation changes must adhere to the specifications set forth in IEC 61300-3-4.
Preconditioning
Maintain the specimen under standard atmospheric conditions (room temperature condition) for a minimum of 2 h
Clean the specimen according to the manufacturer’s instructions.
Initial examinations and measurements
Complete initial examinations and measurements as required by the relevant specification
Conditioning
A tensile force is exerted on the cable of the terminated assembly, while the mated connector assembly is secured by the adaptor within the clamping device This force is applied at an angle of deflection relative to the connector axis.
The test procedure involves several key tasks performed in a specific order: first, set up the apparatus to achieve the desired deflection angle; next, secure the specimen in the clamping device; then, route the cable and apply the necessary tensile force to its end; finally, execute the required number of 360° rotation cycles at a rate of 10 cycles per minute.
Recovery
Allow the specimen to remain under standard atmospheric conditions for a period of 10 min.
Final examinations and measurements
After completing the test, remove all fixtures and clean the mechanical and optical alignment components of the specimen as per the manufacturer's guidelines Conduct final measurements according to the relevant specifications If required, perform a visual inspection of the specimen in accordance with IEC 61300-3-1 and take any necessary measurements to confirm that no permanent damage has occurred.
The severity is determined by the combination of rotation cycles, deflection angle, and the tensile force applied to the cable It should be detailed in the relevant specifications, and the severities listed in Table 1 can be utilized for the procedure.
The relevant specification must include a detailed description of the Device Under Test (DUT), the type of cable used, the tensile force applied, the deflection angle, and the number of cycles It should also specify any unique mounting structures, the optical functionality of the specimen, and the initial examinations, measurements, and performance requirements Additionally, it is essential to outline the examinations and measurements conducted during the test, along with their performance requirements, as well as the final examinations and measurements Any deviations from the test procedure and additional pass/fail criteria should also be documented.
Example for a test set-up
An example of a real test set-up is shown in Figure A.1
Figure A.1 – Example for a test set-up
IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard – Part 1: General and guidance for performance standards
Annexe A (informative) Exemple de montage d'essai 24
Figure 1 – Appareillage d'essai comportant un DUT en rotation verticale 19
Figure 2 – Appareillage d'essai comportant un DUT en rotation horizontale 20
Figure 3 – Appareillage d'essai comportant une unité de déflexion à rotation 21
Figure A.1 – Exemple de montage d'essai 24
DISPOSITIFS D’INTERCONNEXION ET COMPOSANTS PASSIFS À FIBRES OPTIQUES – PROCÉDURES FONDAMENTALES D’ESSAIS ET DE MESURES –
Partie 2-35: Essais – Nutation du câble
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La Norme internationale CEI 61300-2-35 a été établie par le sous-comité 86B: Dispositifs d'interconnexion et composants passifs à fibres optiques, du comité d'études 86 de la CEI:
Cette deuxième édition annule et remplace la première édition, parue en 1995, dont elle constitue une révision technique
Cette édition inclut les modifications techniques significatives suivantes par rapport à l'édition précédente:
– ajout de nouvelles références normatives;
– ajout de nouveaux termes et définitions;
– ajout de deux figures relatives aux appareillages d'essai: l'une comportant un DUT en rotation horizontale, l'autre comportant une unité de déflexion en rotation;
Le texte de cette norme est issu des documents suivants:
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant abouti à l'approbation de cette norme
Cette publication a été rédigée selon les Directives ISO/IEC, Partie 2
The complete list of parts from the IEC 61300 series, published under the general title "Interconnection Devices and Passive Optical Components – Basic Test and Measurement Procedures," is available on the IEC website.
The committee has determined that the content of this publication will remain unchanged until the stability date specified on the IEC website at "http://webstore.iec.ch" in relation to the sought publication On that date, the publication will be updated.
• remplacée par une édition révisée, ou
IMPORTANT – The "colour inside" logo on the cover of this publication indicates that it contains colors deemed essential for a better understanding of its content Users are therefore encouraged to print this publication using a color printer.
DISPOSITIFS D’INTERCONNEXION ET COMPOSANTS PASSIFS À FIBRES OPTIQUES – PROCÉDURES FONDAMENTALES D’ESSAIS ET DE MESURES –
Partie 2-35: Essais – Nutation du câble
This section of IEC 61300 outlines methods to assess the capability of optical fiber devices to withstand nutation that may occur during operation, maintenance, storage, and/or transport The test aims to indicate the performance of such devices when subjected to a combined load of torsion and bending.
The following documents are referenced normatively, either in whole or in part, within this document and are essential for its application For dated references, only the cited edition is applicable For undated references, the latest edition of the referenced document applies, including any amendments.
CEI 61300-3-1, Dispositifs d'interconnexion et composants passifs à fibres optiques –
Méthodes fondamentales d'essais et de mesures – Partie 3-1: Examens et mesures – Examen visuel
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of changes in attenuation and return loss
CEI 61300-3-4, Dispositifs d'interconnexion et composants passifs à fibres optiques –
Méthodes fondamentales d'essais et de mesures – Partie 3-4: Examens et mesures –
Pour les besoins du présent document, les termes et définitions figurant dans la série
CEI 61300, dont certains ont été répétés ici pour plus de commodité, ainsi que les termes et définitions ci-après s'appliquent
3.1 unité de déflexion élément rotatif comportant une traversée de câble, capable de décrire un cercle sans transmettre de couple important au câble
3.2 dispositif de serrage fixe dispositif de serrage empêchant la mobilité du dispositif en essai (DUT) 1 pendant l'essai
1 DUT = en anglais: Device under test
3.3 plaque fixe plaque ayant une traversée de câble capable de contraindre tout mouvement et toute torsion au câble relié au DUT
3.4 poids élément appliquant la force de traction exigée à l'extrémité du câble
3.5 nutation mouvements combinés de flexion-rotation avec force de traction
3.7 dispositif de serrage rotatif dispositif de serrage, capable de décrire un cercle sans transmettre de rotation axiale au DUT
Conception de l'appareillage
L'appareillage réalise une rotation de flexion, pratiquement sans couple, du câble adjacent au
DUT en une trajectoire conique, l'axe du cône étant parallèle à l'axe longitudinal du spécimen
During rotation, a tensile force is applied to the cable Depending on the design of the apparatus, either the DUT (Device Under Test) or the deflection unit may be subjected to rotation Examples of testing apparatuses are illustrated in Figures 1, 2, and 3.
Figure 1 – Appareillage d'essai comportant un DUT en rotation verticale
L'appareillage d'essai de la Figure 1 est au minimum constitué des éléments suivants: a) dispositif de serrage rotatif; b) poulie; c) poids pour exercer la force de traction
The pulley size should not cause any additional weakening during the connector's rotation It is essential that the design and size of the pulley do not alter the load at the connector The maximum radius of the pulley must be calculated based on the allowable variation of the cone angle, using the following equation:
L est la longueur de la trajectoire conique;
Il est admis une tolérance de ±10% sur la longueur de la trajectoire conique
Figure 2 – Appareillage d'essai comportant un DUT en rotation horizontale
L'appareillage d'essai de la Figure 2 est au minimum constitué des éléments suivants:
3) poids pour exercer la force de traction
Il convient que le cõble puisse se dộplacer librement et que le cõble soit entraợnộ en rotation de sorte que son orientation absolue soit maintenue
Dispositif de DUT serrage rotatif
Figure 3 – Appareillage d'essai comportant une unité de déflexion à rotation
L'appareillage d'essai de la Figure 3 est au minimum constitué des éléments suivants: i) dispositif de serrage fixe; ii) unité de déflexion; iii) poids pour exercer la force de traction
Il convient que le cõble puisse se dộplacer librement, et que ce cõble soit entraợnộ en rotation de sorte que son orientation absolue soit maintenue.
Mesures optiques
When active control is specified, the measuring equipment outlined in IEC 61300-3-3 must be connected to the specimen for optical performance testing during the trial The optical source and detector used to measure variations in attenuation must comply with the specifications in IEC 61300-3-4.
Préconditionnement
Maintenir le spécimen dans des conditions atmosphériques normales (condition de température ambiante) pendant au minimum 2 h
Nettoyer le spécimen conformément aux instructions du fabricant.
Mesures et examens initiaux
Réaliser les examens et mesures initiaux comme indiqué par la spécification applicable
Unité de déflexion Angle de déflexion A
Conditionnement
A tensile force is applied to the assembly cable, while the coupled connector is secured by the fitting installed in the clamping device This force is exerted at an angle of deflection relative to the connector's axis.
The testing method involves several key tasks that must be performed in the following order: a) set up the apparatus to achieve the required deflection angle; b) secure the specimen onto the clamping device; c) position the cable and apply the necessary tensile force at the cable's end; d) complete the specified number of rotation cycles (360°) at a rate of 10 cycles per minute.
Rétablissement
Maintenir le spécimen dans des conditions atmosphériques normales pendant 10 min.
Mesures et examens finaux
A l'issue de l'essai, retirer tous les dispositifs de fixation Nettoyer les parties servant à l’alignement mécanique et optique du spécimen, conformément aux instructions du fabricant
Réaliser les mesures finales conformément aux exigences de la spécification correspondante
Si cela est spécifié, examiner visuellement le spécimen conformément à l’CEI 61300-3-1 et prendre toutes les mesures spécifiées pour s’assurer de l'absence de dommages permanents
Severity encompasses the combination of the number of rotation cycles, the deflection angle, and the tensile force applied to the cable It is essential to specify the severity in the applicable specification The severities listed in Table 1 can be utilized for this procedure.
The applicable specification must include the following details, if relevant: a) description of the DUT; b) type of cable; c) tensile strength; d) deflection angle; e) number of cycles; f) specific mounting structures; g) optical functioning specimen; h) initial measurements and examinations along with performance requirements; i) examinations and measurements during testing and performance requirements; j) final measurements and examinations with performance requirements; k) deviations from the testing procedure; l) additional acceptance/rejection criteria.
Un exemple de montage d'essai réel est représenté à la Figure A.1
Figure A.1 – Exemple de montage d'essai
CEI 61753-1, Norme de performance des dispositifs d'interconnexion et composants passifs à fibres optiques – Partie 1: Généralités et lignes directrices pour l’établissement des normes de qualité de fonctionnement