Iec 61300 3 45 2011

IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 1: General and guidance IEC 61300-3-1, Fibre optic interconnectin

Test methods

This article outlines two test methods for assessing the attenuation of random mated optical connectors, offering an estimate of the average performance of a group of cable assemblies, including any applicable adaptors, when utilized in an optical system To ensure statistically unbiased results, the cable assemblies and adaptors must be selected randomly.

Method 1 describes the procedure using a sample of cable assemblies and adaptors specified in Table 1 In this case the plugs (with pins) are used as “reference” plugs and the plugs

(without pins) are tested against them sequentially The results, based on the number of measurements specified in Table 1, are recorded in the test matrix shown in Figures 3 to 5

Method 1 is designed for a design approval process that may include multiple suppliers After obtaining approval, Method 2 will be utilized to ensure ongoing process control.

However, in the event of a dispute, Method 1 shall act as the reference measurement method

Method 2 describes a procedure for the measurement of a sample of cable assemblies specified in Table 2

Three cable assemblies are chosen as reference models, and pins are installed in them Subsequently, the remaining test cable assemblies, which do not have pins, are evaluated against each of the three reference assemblies in a sequential manner This process generates the measurements outlined in Table 2, with the results documented in the test matrix illustrated in Figures 10 to 12.

Method 1 often requires an excessive number of measurements for routine checks of in-house or supplier products Therefore, Method 2 can serve as a viable alternative.

In this measurement method, "reference" plugs or cords refer to components randomly selected from a batch for comparative measurements These terms do not suggest that the components are specially chosen or manufactured, as seen in screen testing.

Table 1 – Sample size for Method 1

Cord and adaptors Measurements Fibres

Table 2 – Sample size for Method 2

Sample size Cord and adaptors

Precautions

To ensure accurate measurements, it is essential to meet specific test requirements: a) Cladding modes must be managed to prevent interference with measurements, and should be stripped based on the fibre coating b) The position of the fibres must remain fixed during measurements to avoid attenuation changes from bending losses c) The test equipment's stability performance should not exceed 0.05 dB or 10% of the measured attenuation, whichever is lower, and must be maintained throughout the measurement duration and operational temperature range, with a required resolution of 0.01 dB for both multimode and single mode d) For consistent results, all connectors and adaptors should be cleaned and inspected before measurement, following visual examination standards outlined in IEC 61300-3-1 and IEC 61300-3-35.

NOTE A cladding mode stripper usually comprises a material having a refractive index equal to or greater than that of the fibre cladding.

Source (S)

The optical source includes an emitter, connection means, and necessary drive electronics It must not only fulfill stability and power level requirements but also possess specific characteristics.

– Centre wavelength, as detailed in the performance and product standard;

– Spectral width, filtered light emitting diode (LED) ≤ 150 nm full width half maximum

– Spectral width, laser diode (LD) < 10 nm FWHM

For multimode fibres, broadband sources such as an LED shall be used

For single mode fibres either an LED or LD may be used

The interference of modes from a coherent source in multimode fibers leads to the formation of speckle patterns, which result in speckle or modal noise characterized by power fluctuations These fluctuations occur over timescales longer than the detector's resolution, making it challenging to maintain stable launch conditions with coherent sources during multimode measurements Therefore, it is advisable to use LEDs or other incoherent sources instead of lasers, including optical time domain reflectometer (OTDR) sources, for measuring multimode components.

Launch conditions (E)

The launch condition shall be specified in accordance with IEC 61300-1.

Detector (D)

The optical detector is equipped with a connector adaptor designed to accept a specific plug type, ensuring it captures all light emitted from the connector This setup includes the necessary electronics for seamless operation.

In addition to meeting the stability and resolution requirements, the detector shall have the following characteristics:

– Linearity of multimode, ≤ ±0,25 dB (over −5 dBm up to −60 dBm);

– Linearity of single mode, ≤ ±0,1 dB (over −5 dBm up to −60 dBm)

NOTE The power meter linearity should be referenced to a power level of −23 dBm at the operational wavelength

When the connection to the detector is interrupted between measurements P1 and P2, the repeatability of the measurements must be within 0.05 dB or 10% of the attenuation being measured, whichever is lower Utilizing a large sensitive area detector can help achieve this level of precision.

The detector's specifications must align with the measurement requirements, ensuring compatibility Additionally, the power meter's dynamic range should effectively measure the power level emitted from the device under test (DUT) at the specified wavelength.

Method 1

To conduct the testing, randomly select the specified number of cable assemblies and label the plugs sequentially as illustrated in Figures 3 to 5 Similarly, randomly select the required sample size of adaptors and label them under test according to the same figures Set up the measurement system as depicted in Figure 1, designating cord 1 as the "reference" cord and plug 1 as the "reference" plug Measure the power from P 1-1 to P 1-n for all fibers in the cord.

Figure 1 – “Reference” cord measurement – Method 1 d) Connect test cord 2 and adaptor 1 to the system and mate plug 1 (with pins) to plug 2

(without pins) as shown in Figure 2 Measure the power P 2-1 to P 2-n for all fibres in the cord

Fan-out cord Adaptor 1 Test cord

Figure 2 – Test cord measurement – Method 1 e) Calculate the attenuation of the mated plug pair 1 (with pins) / 2 (without pins) with adaptor

Attenuation = [-10 log (P 2-i /P 1-i )] - (A × L) dB (1) Where i is fibre number of Test cord

A is fibre attenuation per km;

L is length of fibre in km

The product A ì L can be disregarded for both single mode and multimode fibers (50/125 µm and 62.5/125 µm) when the cord length is less than 10 meters Additionally, it is important to document the attenuation results for each fiber in a suitable matrix format.

NOTE An example of record table (for 4 fibre connectors) is shown in Figure 13 g) Keeping plug 1 (with pins) and adaptor 1 as the “reference” configuration, replace test cord

Connect the test cord 3 and mate plug 3 (without pins) to plug 1 (with pins) Measure the power from P 3-1 to P 3-n and record the attenuation results for each fiber Repeat the previous steps until all plugs (without pins) of the remaining test cable assemblies have been tested against the reference plug 1 (with pins) After completing this, replace the reference plug and adaptor with plug 2.

The "reference" configuration consists of plug 2 (with pins) and adaptor 2 Measure the attenuation for each plug in comparison to the "reference" plug 2 and adaptor 2 Repeat this procedure until all designated plugs have been utilized as "reference" plugs.

Configuration Test cord and labelling

Figure 3 – Test matrix and labelling for measuring Method 1 (2-fibre connector)

“ Reference” configuration Test cord and labelling

Figure 5 – Test matrix and labelling for measuring Method 1 (8, 10, 12-fibre connector)

Method 2

a) Randomly select the sample number of cable assemblies specified in Table 2 b) Choose three cable assemblies at random and sequentially label the plugs of each cord as

Label the remaining cable assemblies as test plugs and sequentially number three adaptors from 1 to 3, as illustrated in Figures 10 to 12 Configure the measurement system according to Figure 6, ensuring that plug 1 (with pins) serves as the "reference" plug for "reference" cord 1 Measure the power values P 1-1 to P 1-n for all fibers in the cord.

Figure 6 – “Reference” cord measurement (1) – Method 2 d) Connect test cord 2 and adaptor 1 to the measurement system and mate reference plug 1

(with pins) with test plug 2 (without pins) as shown in Figure 7 Measure the power P 2-1 to

Figure 7 – Test cord measurement (1) – Method 2 e) Calculate the attenuation of the mated plug pair 1 (with pins) / 2 (without pins) with adaptor

Insertion loss = [-10 log (P 2-i /P 1-i )] - (A × L) dB (2) Where i is fiber number of Test cord

A is fibre attenuation per km

L is length of fibre in km

The product A ì L can be disregarded for both single mode and multimode fibers (50/125 µm and 62.5/125 µm) when the cord length is less than 10 meters It is essential to document the attenuation results for each fiber in a suitable matrix format Steps d) to f) should be repeated until all test plugs (without pins) have been evaluated against "reference" plug 1 (with pins) and adaptor 1 Once this process is complete, the "reference" plug and adaptor should be replaced.

The "reference" configuration consists of plug 2 (with pins) and adaptor 2 To measure attenuation, test all plugs (without pins) against "reference" plug 2 and adaptor 2, following the outlined procedures This process should continue until all designated "reference" plugs (with pins) and adaptors are utilized, and all test cable assemblies (without pins) are evaluated Finally, establish the measurement system as depicted in Figure 8, using "reference" cord 1 to set up the plug.

(without pins) 1 is the “reference” plug, Measure power P 1-1 to P 1-n for all fibres in the cord

Figure 8 – “Reference” cord measurement (2) – Method 2 l) Connect test cord 2 and adaptor 1 to the measurement system and mate “reference” plug 1

(without pins) with test plug 2 (with pins) as shown in Figure 9 Measure the power P 2-1 to

Figure 9 – Test cord measurement (2) – Method 2 m) Calculate the attenuation of the mated plug pair 1 (without pins) / 2 (with pins) with adaptor

Record the attenuation results for each fiber in a suitable matrix format Repeat the testing process for all test plugs with pins against the reference plug 1 and adaptor 1 Once this is completed, replace the reference plug and adaptor accordingly.

The "reference" configuration consists of plug 2 (without pins) and adaptor 2 Measure the attenuation of all test plugs (with pins) against this "reference" plug 2 and adaptor 2, following the outlined procedures Continue testing until all designated "reference" plugs (without pins) and adaptors are utilized, ensuring that all test cable assemblies (with pins) are thoroughly evaluated.

Configuration (1) Test cord and labelling

Plug 1 (with pins) Adaptor 1 Plug 2 (with pins) Adaptor 2 Plug 3 (with pins) Adaptor 3

Plug 1 (without pins) Adaptor 1 Plug 2 (without pins) Adaptor 2 Plug 3 (without pins) Adaptor 3

Plug 1 (with pins) Adaptor 1 Plug 2 (with pins) Adaptor 2 Plug 3 (with pins) Adaptor 3

Plug 1 (without pins) Adaptor 1 Plug 2 (without pins) Adaptor 2 Plug 3 (without pins) Adaptor 3

Figure 12 – Test matrix and labelling for measuring Method 2 (8, 10, 12-fibre connector)

Analysis of results

The mean value and the 97% percentile of the measurement data from all fibres using either Method 1 or Method 2 must meet the specifications outlined in the applicable connector performance standard.

The following details, as applicable, shall be specified in the relevant specification

• Performance characteristics (allowable attenuation, statistical variation, etc.)

• Deviations from this test method

Figure 1 – Mesure du cordon de ô rộfộrence ằ – Mộthode 1 20

Figure 2 – Mesure du cordon d’essai – Méthode 1 20

Figure 3 – Matrice d'essai et étiquetage pour la méthode de mesure 1 (connecteur 2 fibres) 22

Figure 5 – Matrice d'essai et étiquetage pour la méthode de mesure 1 (connecteur à 8, 10, 12 fibres) 23

Figure 6 – Mesure du cordon de ô rộfộrence ằ (1) – Mộthode 2 23

Figure 7 – Mesure du cordon d’essai (1) – Méthode 2 24

Figure 8 – Mesure du cordon de ô rộfộrence ằ (2) – Mộthode 2 24

Figure 9 – Mesure du cordon d’essai (2) – Méthode 2 25

Figure 12 – Matrice d'essai et étiquetage pour la méthode de mesure 2 (connecteur à 8, 10, 12 fibres) 26

Tableau 1 – Nombre d’échantillons pour la méthode 1 18

Tableau 2 – Nombre d’échantillons pour la méthode 2 18

DISPOSITIFS D'INTERCONNEXIONET COMPOSANTS PASSIFS À FIBRES OPTIQUES – MÉTHODES FONDAMENTALES D'ESSAIS ET DE MESURES –

Partie 3-45: Examens et mesures – Affaiblissement dû à l'accouplement de connecteurs quelconques multifibres

The International Electrotechnical Commission (IEC) is a global standards organization that includes all national electrotechnical committees Its primary goal is to promote international cooperation on standardization issues in the fields of electricity and electronics To achieve this, the IEC publishes international standards, technical specifications, technical reports, and publicly accessible specifications (PAS).

The IEC Publications are developed by study committees, which allow participation from any national committee interested in the subject matter International, governmental, and non-governmental organizations also collaborate with the IEC on these projects Additionally, the IEC works closely with the International Organization for Standardization (ISO) under terms established by an agreement between the two organizations.

Official decisions or agreements of the IEC on technical matters aim to establish an international consensus on the topics under consideration, as the relevant national committees of the IEC are represented in each study committee.

The IEC publications are issued as international recommendations and are approved by the national committees of the IEC While the IEC makes every reasonable effort to ensure the technical accuracy of its publications, it cannot be held responsible for any misuse or misinterpretation by end users.

To promote international consistency, the national committees of the IEC commit to transparently applying IEC publications in their national and regional documents as much as possible Any discrepancies between IEC publications and corresponding national or regional publications must be clearly stated in the latter.

The IEC does not issue any conformity certificates itself Instead, independent certification bodies offer conformity assessment services and, in certain sectors, utilize IEC conformity marks The IEC is not responsible for any services provided by these independent certification organizations.

6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication

The IEC and its administrators, employees, agents, including specialized experts and members of its study committees and national committees, shall not be held liable for any injuries, damages, or losses of any kind, whether direct or indirect This includes any costs, such as legal fees, arising from the publication or use of this IEC Publication or any other IEC Publication, or from the credit attributed to it.

8) L'attention est attirée sur les références normatives citées dans cette publication L'utilisation de publications référencées est obligatoire pour une application correcte de la présente publication

Attention is drawn to the fact that some elements of this IEC publication may be subject to patent rights The IEC cannot be held responsible for failing to identify such patent rights or for not reporting their existence.

La Norme Internationale CEI 61300-3-45 Ed 1.0 a été établie par le sous-comité 86B:

Dispositifs d'interconnexion et composants passifs à fibres optiques, du Comité d'Etudes 86 de la CEI: Fibres optiques

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 la présente norme

Cette publication a été rédigée selon les Directives ISO/CEI, 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 Methods," 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

DISPOSITIFS D'INTERCONNEXIONET COMPOSANTS PASSIFS À FIBRES OPTIQUES – MÉTHODES FONDAMENTALES D'ESSAIS ET DE MESURES –

Partie 3-45: Examens et mesures – Affaiblissement dû à l'accouplement de connecteurs quelconques multifibres

This section of IEC 61300 outlines the procedure for measuring the statistical distribution and average attenuation of optical connectors connected without prior selection, specifically using polished multifiber rectangular ferrules with physical contact (PC 1) and angled physical contact (APC 2) in a single row, as defined in the IEC 61754 series This measurement method is applicable to patch cords.

Les documents référencés ci-après sont indispensables pour l'application du présent document

Pour les références datées, seule l’édition citée s’applique Pour les références non datées, la dernière édition du document de référence s’applique (y compris les amendements)

CEI 61300-1: Dispositifs d'interconnexion et composants passifs à fibres optiques – Méthodes fondamentales d'essais et de mesures – Partie 1: Généralités et guide

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 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 3-35: Examinations and measurements – Fibre optic connector endface visual and automated inspection (disponible en anglais seulement)

IEC 61754 (toutes les parties), Interfaces de connecteurs pour fibres optiques

Méthodes d’essais

Two testing methods are described for measuring the attenuation of optical connectors connected without prior selection Both methods provide an estimate of the expected average performance of a group of cables (including any connectors, if applicable) selected from a batch when used in an optical system The cables and any potential connectors must be chosen randomly to ensure that the measurements yield an unbiased statistical estimate.

Method 1 outlines the procedure that employs a sample of specified cords and connectors as detailed in Table 1 In this instance, the connectors (with identification) are utilized as plugs.

Angled physical contact (APC) involves sequential testing of references and sheets (without repurposing) against specified criteria The results are based on the number of measurements outlined in the table.

1, sont enregistrés dans la matrice d’essais représentée aux Figures 3 à 5

La Méthode 1 est destinée à faire partie de la phase d'approbation de la conception qui peut impliquer un ou plusieurs fournisseurs Dès que l’approbation est obtenue, il convient que la

Méthode 2 soit privilégiée en vue du maintien du contrôle du processus Cependant, en cas de conflit, la Méthode 1 doit servir de méthode de mesure de référence

La Méthode 2 décrit une procédure pour la mesure d’un échantillon de cordons spécifiés dans le Tableau 2

Three reference cords are selected from the sample, and markers are installed The other test cords (without markers) are sequentially tested against each of the three reference cords This process generates the specified number of measurements outlined in Table 2, and the results are recorded in the test matrix illustrated in Figures 10 to 12.

The number of measurements required by Method 1 may seem excessive for daily control tasks on products manufactured either in-house or by a supplier In such cases, as mentioned earlier, Method 2 can serve as an alternative option.

In this measurement method, the terms "reference fixture" or "reference cord" are used to define components randomly selected from a batch, against which a number of comparative measurements are made These terms are not intended to refer to specially chosen or manufactured components, such as those used in, for example, decontamination testing.

Tableau 1 – Nombre d’échantillons pour la méthode 1

Cordons et raccords Mesures Fibres

Tableau 2 – Nombre d’échantillons pour la méthode 2

Nombre d’échantillons Cordons et raccords

Précautions

The following testing requirements must be met: a) All precautions should be taken to ensure that sheath modes do not affect the measurement, with sheath modes extracted based on the fiber coating b) It is essential to maintain the position of the fibers fixed during the test between measurements P1 and P2 to avoid variations in attenuation due to losses from bending c) The performance stability of the testing equipment must be ≤ 0.05 dB or 10% of the attenuation being measured, whichever is lower, and this stability must be maintained throughout the measurement period and within the operational temperature range The required measurement resolution must be 0.01 dB for both multimode and single-mode fibers d) To achieve consistent results, all connectors and joints must be cleaned and inspected prior to measurement, with a visual examination conducted in accordance with IEC 61300-3-1 and IEC 61300-3-35.

NOTE Un extracteur de mode de gaine se compose généralement d’un matériau ayant un indice de réfraction supérieur ou égal à celui de la gaine de la fibre

The source consists of an optical emitter, its connection medium, and associated electronic control devices In addition to meeting stability and power level requirements, the source must possess specific characteristics.

– Longueur d'onde centrale, détaillée dans la norme de produit et la norme de qualité de fonctionnement;

– Largeur spectrale, LED filtrée ≤ 150 nm de largeur à mi-hauteur (FWHM 3 );

– Largeur spectrale, diode laser (DL) < 10 nm de largeur à mi-hauteur (FWHM)

Pour les fibres multimodales, les sources à large bandes telles qu’une LED doivent être utilisées

Pour les fibres unimodales, soit une LED soit une DL peut être utilisée

The interference of modes from a coherent source creates "speckle" patterns in multimode fibers These speckle patterns lead to modal noise, observed as fluctuations in power, since their characteristic times exceed the detector's resolution time Consequently, achieving stable injection conditions with coherent sources for multimodal measurements may be impossible Therefore, it is advisable to avoid lasers, including time-domain optical reflectometry (TDOR) sources, and instead use LEDs or other incoherent sources for measuring multimodal components.

Conditions d’injection (E)

Les conditions d’injection doivent être spécifiées conformément à la CEI 61300-1.

Détecteur (D)

The detector consists of an optical sensor, a connection interface, and associated electronic devices It connects via a fitting that accommodates a suitably designed connector plug The detector is required to capture all light radiation emitted by the connector plug.

Outre le respect des exigences de stabilité et de résolution, le détecteur doit comporter les caractéristiques suivantes:

3 FWHM = Full width half maximum

– Linéarité en multimodal, ≤ ±0,25 dB (de −5 dBm à −60 dBm);

– Linéarité en unimodal, ≤ ±0,1 dB (de −5 dBm à −60 dBm)

NOTE Il convient que la linéarité de l’appareil de mesure de la puissance soit référencée à un niveau de puissance de −23 dBm à la longueur d’onde de fonctionnement

When the connection to the detector is interrupted between measurements P1 and P2, the measurement repeatability should be around 0.05 dB or 10% of the attenuation being measured, using the lower value A wide sensitivity detector can be utilized for this purpose.

The specific characteristics of the detector must align with the measurement requirements The dynamic range of the power measurement device should enable it to accurately measure the power level emitted by the device under test (DUT 4) at the wavelength being assessed.

Méthode 1

a) Prélever au hasard le nombre d’échantillons de cordons spécifié dans le Tableau 1

Etiqueter les fiches en essai séquentiellement comme représenté aux Figures 3 à 5 b) Prélever au hasard le nombre d’échantillons de raccords, comme spécifié dans le Tableau

Label the connections sequentially, as shown in Figures 3 to 5 Assemble the measurement system as depicted in Figure 1, using cord 1 as the reference cord and plug 1 as the reference plug Measure the power from P 1-1 to P 1-n for all fibers in the cord.

To measure the reference cord, connect test cord 2 and connector 1 to the system, and couple plug 1 (marked) to plug 2 (unmarked) as shown in Figure 2 Measure the power P 2-1 to P 2-n for all fibers in the cord.

Cordon éclaté Raccord 1 Cordon d'essai

Figure 2 – Mesure du cordon d’essai – Méthode 1

4 DUT = Device under test e) Calculer l'affaiblissement de la paire 1 de fiches accouplées (avec repérage) / 2 (sans repérage) avec le raccord 1, au moyen de l’Equation (1):

Où i est le numéro de fibre du cordon d’essai

A est l’affaiblissement de la fibre par km;

L est la longueur de fibre en km

The product A can be disregarded in both unimodal and multimodal scenarios when the cord length is less than 10 meters Additionally, it is important to record the attenuation results for each fiber in a suitable matrix format.

An example of a recording table for 4-fiber connectors is shown in Figure 4 To maintain the reference configuration with plug 1 (marked) and connector 1, replace test cord 2 with test cord 3 and connect plug 3.

Measure the power P 3-1 to P 3-n and record the attenuation results for each fiber Repeat the steps until all unmarked test cord sheets have been tested against the reference sheet 1.

Once step i) is completed, replace the reference plug and connector so that plug 2 (with identification) and connector 2 form the reference configuration Measure the attenuation for all plugs in relation to plug 2 of the reference configuration.

(avec repérage) et au raccord 2 l) Continuer ce processus jusqu’à ce que toutes les fiches allouées aient été utilisées comme fiches de ô rộfộrence ằ

Configuration de ô rộfộrence ằ Cordon d’essai et ộtiquetage

Figure 3 – Matrice d'essai et étiquetage pour la Méthode de mesure 1

Configurationde ô rộfộrence ằ Cordon d’essai et ộtiquetage

Configuration de ô rộfộrence ằ Cordons d’essai et ộtiquetage

Méthode 2

Randomly select the specified number of cord samples as outlined in Table 2 Choose three cords at random and sequentially label the records of each cord as reference records Sequentially label the records of the remaining cords as test records, and label three connectors from 1 to 3 as shown in Figures 10 to 12 Set up the measurement system as depicted in Figure 6, ensuring that cord 1 of the reference set is configured so that connector 1 (with marking) serves as the reference connector.

Mesurer la puissance P 1-1 à P 1-n pour toutes les fibres du cordon

To measure the reference cord, connect test cord 2 and connector 1 to the measurement system Then, couple reference plug 1 (marked) to test plug 2 (unmarked), as shown in Figure 7 Finally, measure the power from P 2-1 to P 2-n.

Figure 7 – Mesure du cordon d’essai (1) – Méthode 2 e) Calculer l'affaiblissement de la paire de fiches accouplées 1 (avec repérage) / 2 (sans repérage) avec le raccord 1, au moyen de l’Equation (2):

Où i est le numéro de fibre du cordon d’essai

A est l’affaiblissement de la fibre par km

L est la longueur de fibre en km

The product A can be disregarded in both unimodal and multimodal scenarios when the cord length is less than 10 meters Results of attenuation for each fiber should be recorded in the appropriate matrix format Repeat the testing steps until all test samples (without labeling) have been evaluated against reference sheet 1 (with labeling) and connector 1 After completing this step, replace reference sheet 1 and connector with reference sheet 2 (with labeling) and connector 2 to establish the new reference configuration Measure the attenuation for all test samples (without labeling) against reference sheet 2 (with labeling) and connector 2, following the previously described procedures Continue this process until all allocated reference sheets (with labeling) and connectors have been utilized, and all test cords (without labeling) have been tested Set up the measurement system as shown in Figure 8, using reference cord 1 so that sheet 1 (without labeling) serves as the reference sheet Measure the power.

P 1-1 à P 1-n pour toutes les fibres du cordon

To measure the reference cord, connect test cord 2 and connector 1 to the measurement system Then, couple the reference plug 1 (without marking) to the test plug 2 (with marking), as shown in Figure 9 Finally, measure the power from P 2-1 to P 2-n.

To calculate the attenuation of the paired connectors, first measure the attenuation for connector 1 (without marking) and connector 2 (with marking) using the provided equation Record the attenuation results for each fiber in the appropriate matrix format Repeat the measurement process for all test connectors (with marking) against the reference connector 1 (without marking) and connector 1 After completing the measurements for connector 1, replace it with reference connector 2 (without marking) and connector 2 to establish a new reference configuration Measure the attenuation for all test connectors (with marking) against reference connector 2 (without marking) and connector 2, following the previously described procedures Continue this process until all allocated reference connectors (without marking) and connectors have been utilized, and all test cords (with marking) have been tested.

Fiche 1 (avec repérage) Raccord 1 Fiche 2 (avec repérage) Raccord 2

Fiche 1 (sans repérage) Raccord 1 Fiche 2 (sans repérage) Raccord 2

Configuration de ô rộfộrence ằ (1) Cordon d’essai et étiquetage

Configuration de ô rộfộrence ằ (2) Cordon d’essai et étiquetage

Figure 11 – Matrice d'essai et étiquetage pour la méthode de Mesure 2

Configurationde ô rộfộrence ằ (1) Cordon d’essai et étiquetage

Configurationde ô rộfộrence ằ (2) Cordon d’essai et étiquetage

Figure 12 – Matrice d'essai et étiquetage pour la méthode de Mesure 2

Analyse des résultats

The average value and the 97% value of the measurement data obtained from all fibers using Method 1 or Method 2 must comply with the specified values in the corresponding connector performance standard.

Les détails suivants doivent, le cas échéant, être stipulés dans la spécification applicable

• Les caractéristiques de performance (affaiblissement admissible, variations statistiques, etc.)

• La longueur d’onde de la source

• L’affaiblissement de la fibre par km

• Les écarts par rapport à la présente méthode d'essai

Tiêu đề	Attenuation of Random Mated Multi-Fibre Connectors
Trường học	Geneva University
Chuyên ngành	Electrical and Electronic Technologies
Thể loại	Standards
Năm xuất bản	2011
Thành phố	Geneva

Định dạng
Số trang	32
Dung lượng	1,18 MB