Iec 60966 1 1999

NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60966 1 QC 140000 Deuxième édition Second edition 1999 04 Ensembles de cordons coaxiaux et de cordons pour fréquences rad ioélectriques – Partie 1 S[.]

Conception et construction du câble

Cables that comply with IEC 61196 standards should be specified whenever possible If cables with designs deviating from IEC 61196 are necessary, they must meet the requirements of the relevant specific specification.

Conception et construction du connecteur

Connectors that comply with a section of IEC 61169 should be specified whenever possible If a custom-designed connector is necessary, its interface must adhere to the relevant section of IEC 61169, and the connector's construction must meet the requirements outlined in the appropriate specific specification.

Dimensions extérieures et dimensions de l’interface

The external dimensions must align with those specified in the particular specification for the cord Additionally, the interface dimensions should conform to the requirements outlined in the corresponding specific specification.

Fabrication

Le cordon ne doit pas avoir de défaut visible et doit être propre.

LICENSED TO MECON Limited - RANCHI/BANGALORE FOR INTERNAL USE AT THIS LOCATION ONLY, SUPPLIED BY BOOK SUPPLY BUREAU.

Transfer impedance is defined as the ratio of the induced voltage within a cable assembly to the inducing current outside of it This measurement is typically taken between specific points on connectors that are mated to the cable assembly's connectors.

3.10.2 screening attenuation the ratio of the signal power inside the cable assembly to the total power that radiates outside the cable assembly

3.11 power rating the input power which may be handled continuously by the cable assembly when terminated by its characteristic impedance

NOTE 1 – For practical application, the maximum power that may be handled is dependent upon the return loss.

NOTE 2 – Power rating is dependent on mounting details, ambient temperature, air pressure and circulation It is normally specified at an ambient temperature of 40 °C.

3.12 artificial ageing a process used to improve the stability of phase attenuation and expansion with temperature.

The process typically involves subjecting the entire cable assembly to multiple temperature cycles Unless stated otherwise in the specific detail specification, the supplier has the discretion to decide whether to perform artificial aging on the complete cable assembly.

Cables in accordance with, or conforming to, IEC 61196 shall be specified wherever possible,

Where cable designs deviating from IEC 61196 are required, these cables shall comply with the requirements of the relevant detail specification.

Connector types should adhere to the applicable sections of IEC 61169 whenever feasible In cases where a specialized connector design is necessary, the interface must align with the relevant part of IEC 61169, if available, and the construction of the connector must meet the specifications outlined in the relevant detail specification.

The outline dimensions must adhere to the applicable detail specifications of the cable assembly, while the interface dimensions should also comply with the relevant detail specifications.

There shall be no observable defects in the cable assembly; it shall be clean and in good condition.

Marquage

Le marquage doit être lisible et conforme à celui qui est indiqué dans la spécification particulière; il doit permettre d’identifier le fabricant du cordon.

Protections d'extrémités

Unless otherwise specified in the particular specification, connectors must be equipped with suitable protective materials for transport and storage, ensuring that at least each interface is safeguarded against damage and dust.

Emballage et étiquetage

L’emballage et l’étiquetage doivent être conformes à ceux qui sont indiqués dans la spécification particulière appropriée, sauf prescription contraire.

L’annexe E fournit un guide relatif à l’assurance de la qualité couvrant l’agrément de savoir- faire ainsi que l’homologation.

Conditions atmosphériques normales d’essai

Sauf indication contraire, tous les essais doivent être effectués dans les conditions spécifiées dans la CEI 60068.

Before taking measurements, the cords must be stored at the measurement temperature for a sufficient duration to ensure that the entire cord reaches this temperature If measurements are taken at a temperature different from the normal temperature, the results should be adjusted to reflect the normal temperature if necessary.

When testing cannot be conducted under normal atmospheric conditions, it is essential to include a note in the test report that describes the actual testing conditions.

Examen visuel

The specimen must be visually inspected to ensure that: a) the manufacturing and finishing adhere to industry standards; b) the marking complies with section 5.2 of this specification; c) there is no mechanical damage or unintended movement of parts; and d) there is no corrosion or flaking on the materials or surfaces.

L’examen peut généralement être effectué en utilisant un grossissement jusqu’à trois.

Inspection des dimensions

Les dimensions de l’interface doivent être soumises à un contrôle de conformité avec la spécification particulière applicable en utilisant le matériel d’essai approprié.

Marking shall be legible and in accordance with the relevant detail specification; it shall identify the manufacturer of the cable assembly.

Disposable end caps made of appropriate materials must be used to protect connectors during transport and storage, ensuring that each interface is safeguarded from damage and dirt, unless stated otherwise in the specific details.

Packaging and labelling shall be in accordance with the relevant detail specification, unless otherwise specified.

A guide for quality assurance including capability approval as well as qualification approval is given in annex E.

7.1 Standard atmospheric conditions for testing

Unless otherwise specified, all tests shall be carried out under the conditions specified in

Before the measurements are made, the cable assemblies shall be stored at the measuring temperature for a time sufficient to allow the entire cable assembly to reach this temperature.

W hen measurements are made at a temperature other than the standard temperature, the result shall, where necessary, be corrected to the standard temperature.

In cases where testing under standard atmospheric conditions is not feasible, the test report must include a note detailing the actual testing conditions.

The specimen must undergo a visual inspection to confirm that the condition, workmanship, and finish meet satisfactory standards, the marking complies with section 5.2 of this specification, there is no mechanical damage or unwanted movement of parts, and no signs of pitting or flaking in materials or finishes are visible.

Examination may generally be carried out using an instrument with up to three times magnification.

The interface dimensions shall be tested for compliance with the relevant detail specification with the appropriate test equipment.

When using connectors compliant with IEC 61169, the examination of interface dimensions can be focused on characteristics that may vary due to improper assembly, such as the axial dimensions of the reference plane in relation to the dielectric and the internal contact.

Lorsque d'autres connecteurs sont utilisés ou lorsque des prescriptions spéciales existent, les détails doivent être donnés dans la spécification particulière appropriée.

Toute prescription spéciale pour la mesure des dimensions extérieures d’un cordon doit être donnée dans la spécification particulière appropriée.

Propriétés de réflexion

Determine the amount of signal reflected back to the source by the tested cable in a suitable system The reflection behavior is preferably expressed in terms of reflection losses in dB.

Il convient de mesurer les pertes par réflexion d’un cordon avec un analyseur de réseau adapté.

Pour mesurer les caractéristiques de réflexion de cordons, il faut accorder une attention particulière aux éléments suivants:

Ensure that the scanning speed is low enough for the reflected signal to remain centered within the system's intermediate frequency (IF) filter The longer the cable, the more important it is to select a reduced speed.

Cables can exhibit narrow reflection loss transients For continuous network analysis systems, the sweep speed must be low enough, while for digital network analyzers, the number of measurement points should be high enough to accurately resolve any potential reflection loss transients.

For digital systems, it is recommended that the number of sampling points, denoted as \$n\$, should satisfy the condition \$n \geq \frac{(f_2 - f_1) L}{120}\$, where \$f_1\$ represents the lowest frequency in the range (in MHz) and \$f_2\$ denotes the highest frequency in the range (in MHz).

L est la longueur physique du spécimen d’essai, en m.

Si ces éléments ne sont pas respectés, on peut obtenir une distance trop importante entre les points d’échantillonnage de fréquence, et provoquer ainsi des défauts de mesure importants.

When using connectors that comply with IEC 61169 standards, the inspection of interface dimensions should focus on features that are prone to variation due to improper assembly Key areas to examine include the axial dimensions from the reference plane to the dielectric and the inner contact features.

Where other connectors are used or where special requirements exist, details shall be given in the relevant detail specification.

Any special requirements for the measurement of cable assembly outline dimensions shall be given in the relevant detail specification.

To assess the signal reflected back to the source by the tested cable assembly in a matched system, it is essential to express the reflection behavior in terms of 'dB return loss'.

The return loss of a cable assembly should be measured with a suitable network analyser.

For the measurement of the reflection characteristics of cable assemblies, special care must be given to the following:

To achieve optimal performance, it is crucial to maintain a slow sweep speed that keeps the reflected signal centered within the IF-filter of the receiver system Additionally, as the length of the cable increases, a slower sweep speed becomes necessary.

Cable assemblies can exhibit narrow return loss spikes To effectively analyze these spikes, continuous network analyzer systems should operate at a low sweep rate, while digital network analyzer systems must utilize a high number of measurement points to accurately resolve any potential return loss spikes.

In digital systems, the required number of sampling points, denoted as $ n $, must satisfy the condition $ n \geq \frac{3(f_2 - f_1) L}{120} $ Here, $ f_1 $ represents the lowest frequency in the range measured in MHz, while $ f_2 $ indicates the highest frequency in the same range.

L is the physical length of the test specimen, in m.

Failing to apply these criteria may result in too wide a distance between the frequency sampling points, thus leading to considerable measuring failures.

Reflection losses of cables are not always symmetrical on both sides, and measurements may be necessary from both sides Unless otherwise specified in the corresponding particular specification, the worst-case scenario should be included in the specification.

The system must be calibrated with the appropriate connector types If these are unavailable, adapters should be utilized While adapters can lead to increased reflection loss measurements, the results should not be adjusted for the presence of adapters The total reflection losses, including those from the device under test and the adapters, must comply with the specification limits.

Il est possible d’utiliser d’autres techniques pour mesurer les caractéristiques de réflexion d’un cordon, après accord avec le client.

Les valeurs de pertes par réflexion mesurées doivent s’inscrire dans les limites spécifiées.

8.1.4 Informations à donner dans la spécification particulière a) Pertes minimales par réflexion, en fonction de la fréquence, le cas échéant. b) Gamme de fréquences. c) Définition en fréquence requise.

Mesures à effectuer à partir d’une extrémité ou de deux extrémités.

Uniformité d’impédance

Déterminer la variation locale de l’impédance caractéristique du cordon.

The measurement is conducted using a time-domain reflectometer (TDR) with a pulse applied to the cable through an air line serving as a reference impedance It is essential to observe the variation of impedance along the cable.

Il est aussi possible d’utiliser un système travaillant par conversion du domaine fréquentiel au domaine temporel.

Celles-ci doivent être indiquées dans la spécification particulière appropriée.

8.2.4 Informations à donner dans la spécification particulière a) Temps de montée du système RDT. b) Limites de la variation d’impédance.

Pertes d’insertion

Les pertes d’insertion doivent être mesurées conformément à l’annexe A.

The return loss of cable assemblies can be asymmetrical, necessitating measurements from both ends Unless specified otherwise in the relevant detail specification, the worst-case scenario must remain within the defined parameters.

The system must be calibrated using the correct connector types; if these are unavailable, adapters should be utilized While the use of adapters may lead to a decrease in the measured return loss, the results will not be adjusted for the presence of adapters It is essential that the overall return loss, including the effects of the adapters, remains within the specified limits.

Other techniques for measuring the reflection characteristics of a cable assembly may be used if agreed by the customer.

The measured return loss values shall be within the specified limits.

8.1.4 Information to be given in the detail specification a) Minimum return loss, as a function of frequency, if appropriate. b) Frequency range. c) Required frequency resolution.

Measurements to be made from one or both ends.

To determine the variation of local characteristic impedance of the cable assembly.

Measurement is conducted using a time domain reflectometer (TDR), where an input step is applied to the cable assembly via an air line that serves as an impedance reference This setup allows for the observation of impedance variations along the assembly.

Alternatively, a system using frequency domain to time domain conversion may be used.

To be as specified in the relevant detail specification.

8.2.4 Information to be given in the detail specification a) Rise time of the TDR system. b) Limits of impedance variation.

The insertion loss shall be inspected in accordance with annex A.

Les pertes d’insertion ne doivent pas excéder les valeurs limites spécifiées à toutes les fréquences contenues dans la bande de fréquences indiquée dans la spécification particulière appropriée.

8.3.3 Informations à donner dans la spécification particulière a) Pertes d’insertion maximales, en fonction de la fréquences, dans les cas appropriés. b) Gamme de fréquences.

Stabilité des pertes d’insertion

Déterminer les variations de l’affaiblissement à une fréquence donnée lorsque le cordon est soumis à une courbure dynamique.

During the measurement of insertion losses, conducted according to section 8.3, the cable is wound around a mandrel with a radius equal to the dynamic bending radius, following the number of turns specified in the relevant particular specification.

Pendant et après l’essai, la variation spécifiée des pertes d’insertion indiquée dans la spécification particulière appropriée ne doit pas être dépassée.

In the specific specification, it is essential to provide the dynamic bending radius of the cable, the number of turns and the section of the cord on the mandrel, the testing frequencies, and the maximum variation of insertion losses.

Temps de propagation

Le temps de propagation est mesuré selon l’annexe B.

Le temps de propagation ne doit pas dépasser les limites indiquées dans la spécification particulière appropriée.

In the specific specification, it is essential to provide information regarding the frequency band in which the measurement is conducted, as referenced in Article B.1, or the system's rise time, as detailed in Article B.2 Additionally, the propagation time and its tolerance must be included.

Stabilité de la longueur électrique

Déterminer le changement de phase, à une fréquence donnée, provoqué par le changement de la longueur électrique lorsque le cordon est soumis à une courbure ou à une torsion.

The insertion loss shall not exceed the specified limits at any frequency within the frequency band indicated in the relevant detail specification.

8.3.3 Information to be given in the detail specification a) Maximum insertion loss, if appropriate, as a function of frequency. b) Frequency range.

To determine the change of attenuation at a given frequency when the cable assembly is subjected to dynamic bending.

During the measurement of insertion loss as specified in section 8.3, the cable should be wrapped around a mandrel with a radius that matches the dynamic bending radius, utilizing the specified number of turns outlined in the relevant detail specification.

During and after the test, the specified change of insertion loss given in the relevant detail specification shall not be exceeded.

The detail specification must include the dynamic bending radius of the cable, the number of turns and the portion of the cable assembly on the mandrel, the test frequencies, and the maximum change of insertion loss.

The propagation time is inspected in accordance with annex B.

The propagation time shall not exceed the limits indicated in the relevant detail specification.

The detail specification must include the frequency band for the measurement or the system's rise time, as outlined in clause B.1 and B.2, respectively Additionally, it should specify the propagation time along with its tolerance.

To determine the change of phase caused by the change in electrical length when the cable assembly is subjected either to bending or twisting.

Un cordon en forme de U doit être raccordé à un analyseur de réseau adapté (voir figure 1a).

During the signal emission recording phase, the cable is wrapped 180° around the mandrel (see Figure 1b), unwound to the starting position, then wrapped counterclockwise 180° around the mandrel (see Figure 1c), and unwound again to the initial position The initial position of the mandrel should be selected so that only the straight sections of the U are bent during the test.

Analyseur de réseau Accès de mesure

Dispositif en essai Analyseur de réseau

Figure 1 – Essai de courbure: ensemble en forme de U

A cable assembly which is of a U shape has to be connected to a suitable network analyser

During the recording of the transmitting signal phase, the cable is wound 180° around the mandrel and then unwound back to its starting position It is subsequently wound counter-clockwise for another 180° before being unwound again The mandrel's initial position is selected to ensure that only the straight sections of the U are bent during the test.

Figure 1 – Bending test: U shape assembly

A straight cord, as shown in figure 2a, should end with a short circuit at one end and be connected to a suitable network analyzer at the other end While recording the phase of the reflected signal, the cable is initially wound clockwise around the mandrel for half a turn (refer to figure 2b) and then released to its neutral position.

(position de départ), enroulé dans le sens inverse des aiguilles d’une montre autour du mandrin (voir figure 2c) puis relâché à nouveau pour regagner sa position de départ.

Court-circuit Analyseur de réseau

Figure 2 – Essai de courbure: ensemble de forme droite

During the signal emission recording phase, the mandrel at the center of the cable is initially twisted 180° clockwise (see figure 3b) and then released to return to its starting position, followed by a counterclockwise twist.

180° (voir figure 3c), puis relâché à nouveau pour regagner sa position de départ.

Depending on the torsional rigidity and the maximum torque allowed at the cable connector interface, it may be necessary to limit the maximum torsion angle.

A straight-shaped cable assembly must be terminated with a short at one end and connected to a network analyser at the other To record the phase of the reflected signal, the cable is first wound clockwise around a mandrel for half a turn, then released to its starting position It is subsequently wound anti-clockwise around the mandrel and released again to its original position.

Figure 2 – Bending test: straight assembly

During the signal transmission phase, the mandrel at the center of the cable is initially twisted 180° clockwise and then returned to its original position Subsequently, it is twisted 180° counter-clockwise before being released back to the starting position.

NOTE – Depending on the torsional rigidity and the maximum permissible torque at the cable connectors interface, the maximum twist angle may have to be restricted.

Figure 3 – Essai de torsion: ensemble en forme de U

La différence de phase ne doit pas dépasser les limites indiquées dans la spécification particulière correspondante.

8.6.4 Informations à donner dans la spécification particulière a) Rayon du mandrin (généralement le rayon de courbure dynamique du câble). b) Fréquence d’essai. c) Variation maximale de phase.

Différence de phase

Mesurer la différence de phase entre deux ou plusieurs cordons.

La mesure est effectuée en utilisant un analyseur de réseau vectoriel d’une précision adaptée.

Il est aussi possible d’utiliser une ligne à fente lorsque les prescriptions concernant la fréquence et la précision le permettent.

La différence de phase ne doit pas dépasser les limites indiquées dans la spécification particulière appropriée.

Figure 3 – Twisting test: U shape assembly

The phase difference shall not exceed the limits specified in the relevant detail specification.

8.6.4 Information to be given in the detail specification a) Radius of mandrel (usually dynamic bending radius of the cable). b) Test frequency. c) Maximum change of phase.

To measure the phase difference between two or more cable assemblies.

Measurements shall be made using a suitable network analyser of appropriate resolution.

Alternatively, a slotted line may be used where frequency and accuracy requirements permit.

8.7.4 Informations à donner dans la spécification particulière a) Différence de phase maximale ou différence de phase nominale avec les tolérances. b) Fréquence.

Variation de la phase avec la température

Déterminer les changements de phase dus au changement de la longueur électrique lorsque le cordon est soumis à des variations de température dans sa gamme de températures de fonctionnement.

If specified in the relevant particular specification, this test may be conducted on a cord specimen instead of a finished cord The cord specimen must be identical to the finished cord, except for its length and shape.

The measurement is conducted using a suitable network analyzer along with the cable and its connectors at room temperature Specific details for each cable support must be provided in the relevant specifications.

When testing a cord specimen, the cable must create one or more unsupported loops with a diameter at least ten times the minimum static bend radius.

Six cycles de température doivent être utilisés Il est aussi possible d’utiliser une ligne à fente lorsque les prescriptions concernant la fréquence et la précision le permettent.

Pendant l’essai, la variation de phase ne doit pas excéder les limites indiquées dans la spécification particulière appropriée.

In the specific specification, it is essential to provide information on the temperature range and temperature-time cycle, the measurement frequency, and the method of presenting results, such as °el /°C Additionally, the allowable phase variation and the configuration of the replacement cord, if applicable, should also be included.

Efficacité d’écran

The effectiveness of the screen must be verified Applicable tests are outlined in Annex C or in IEC 61726 The relevant specific specification should indicate the applicable test, frequency range, and minimum screen effectiveness value.

8.7.4 Information to be given in the detail specification a) Maximum phase difference or nominal phase difference with tolerances. b) Frequency.

To determine the changes of phase caused by the change in the electrical length when the cable assembly is subjected to various temperatures within its operating temperature range.

This test may be performed on a specimen cable assembly instead of a finished one, as specified in the relevant detail specification The specimen must match the finished cable assembly in all aspects except for its length and shape.

Measurements should be conducted with an appropriate network analyzer, incorporating the cable assembly and its connectors, within a controlled temperature chamber Additionally, specifications for any cable supports must be included in the relevant detail documentation.

When testing a specimen cable assembly, it is essential that the cable creates one or more unsupported loops with a diameter that is at least ten times greater than the minimum static bending radius.

Six temperature cycles shall be used Alternatively, a slotted line can be used where frequency and accuracy requirements permit.

During the test, the phase variation shall not exceed the limits specified in the relevant detail specification.

The detail specification must include the temperature range and temperature versus time cycle, the measurement frequency, and the method for presenting results, such as °el/°C Additionally, it should specify the admissible phase variation and the configuration of the substitute specimen cable assembly, if permitted.

The screening effectiveness shall be tested Applicable tests are given in annex C or in

IEC 61726 The relevant detail specification shall identify the applicable test, the frequency range and the minimum value of screening effectiveness.

Tension de tenue

Each cord must withstand the specified voltage without breakdown or deviation The minimum test voltage, derived from the nominal service voltage $ U $ of the cord and the test voltage $ E $ (both expressed in direct current or peak value in alternating current), is provided.

E = 3 U pour les cordons ayant une tension nominale de service allant jusqu’à 1 kV compris, ou

E = 1,5 U avec un minimum de 3 kV pour les cordons ayant une tension nominale de service dépassant 1 kV.

The peak voltage specified in the relevant specification must be applied between the inner and outer conductors of the cord, using a coupled connector as the interface, at a frequency ranging from 40 Hz to 60 Hz.

Il est possible d’appliquer une tension continue égale à la valeur de crête de la tension alternative.

La tension doit être appliquée pendant 1 min, sauf prescription contraire dans la spécification particulière appropriée.

Il ne doit y avoir ni claquage ni contournement.

8.10.3 Informations à donner dans la spécification particulière a) Tension d’essai. b) Toute prescription spéciale.

Résistance d’isolement

The insulation resistance should be measured between the inner conductor and the outer conductor of the cord at a direct voltage of 500 V ± 50 V, or at the nominal voltage of the cord if it is lower.

La résistance d’isolement doit être mesurée après un temps de stabilisation de 60 s ± 5 s, sauf prescription contraire dans la spécification particulière appropriée.

La valeur de la résistance d’isolement ne doit pas être inférieure à celle qui est indiquée dans la spécification particulière.

8.11.3 Informations à donner dans la spécification particulière a) Tension d’essai. b) Temps de stabilisation. c) Valeur de résistance.

Each cable assembly must endure the specified voltage outlined in the relevant detail specification without experiencing breakdown or flashover The minimum test voltage, derived from the rated working voltage $ U $ of the cable assembly and the test voltage $ E $ (expressed in either d.c or a.c peak), is defined accordingly.

E = 3 U for cable assemblies having a rated working voltage up to and including 1 kV, or

E = 1,5 U with a minimum of 3 kV for cable assemblies having a rated working voltage exceeding 1 kV.

The specified peak a.c voltage, within the frequency range of 40 Hz to 60 Hz, must be applied between the inner and outer conductors of the cable assembly through a mated connector interface.

Alternatively, a d.c voltage equal to the peak a.c voltage may be applied.

The voltage shall be applied for a period of 1 min, unless otherwise stated in the relevant detail specification.

There shall be no breakdown or flashover.

8.10.3 Information to be given in the detail specification a) Test voltage. b) Any special requirements.

Insulation resistance must be assessed between the inner and outer conductors of the cable assembly using a direct voltage of 500 V ± 50 V or the cable assembly's rated voltage, whichever is lower.

The insulation resistance shall be measured after a stabilisation time of 60 s ± 5 s, unless otherwise specified in the relevant detail specification.

The value of the insulation resistance shall not be less than that indicated in the detail specification.

8.11.3 Information to be given in the detail specification a) Test voltage. b) Stabilization time. c) Resistance value.

Continuité du conducteur intérieur et du conducteur extérieur

Vérifier la continuité des conducteurs intérieur et extérieur en courant continu et à basse fréquence.

Tout méthode appropriée peut être utilisée.

Il ne doit pas y avoir de discontinuité indésirable du conducteur intérieur ou extérieur en courant continu ou à basse fréquence.

8.12.4 Informations à donner dans la spécification particulière a) Tension d’essai. b) Courant d’essai. c) Fréquence.

Puissance nominale

The nominal power of a cord is defined as the input power that can be continuously supported at any frequency, temperature, and pressure when the cord is connected to a load that matches its characteristic impedance.

La limite est constituée soit par la tension maximale de fonctionnement autorisée, soit par la température maximale du conducteur intérieur du câble ou du connecteur.

L’essai de tenue en puissance se divise ainsi en deux catégories: a) tenue en puissance continue; b) tenue en puissance de crête ou pulsée.

L’essai doit être réalisé conformément à 11.19 de la CEI 61196-1 en relevant toute indication de formation d’un arc et de déplacement mécanique du joint de soudure ou mécanique.

There should be no signs of rupture due to overheating, arcing, or bypassing during the application of the specified power under the indicated environmental conditions After testing, the cord must show no visible damage, and the electrical specifications must be met.

8.14.4 Informations à donner dans la spécification particulière a) Température. b) Pression. c) Humidité relative.

8.12 Inner and outer conductor continuity

To ensure the d.c and low frequency continuity of the inner and outer conductors.

Any appropriate method may be used.

There shall be no undesired d.c or low frequency discontinuity of the inner or outer conductor.

8.12.4 Information to be given In the detail specification a) Test voltage. b) Test current. c) Frequency.

The power rating of a cable assembly refers to the continuous input power it can manage at a specific frequency, temperature, and pressure, provided that the assembly is connected to a load that matches its characteristic impedance.

A limitation may be either the maximum permissible operating voltage or the maximum inner conductor temperature of either the cable or the connector.

Thus, the power handling capability test is divided into two categories: a) continuous power handling capability; b) peak or pulsed power handling capability.

The test shall be performed in accordance with 11.19 of IEC 61196-1 taking into account any evidence of arcing and mechanical displacement of the solder or mechanical joint.

The cable assembly must demonstrate no signs of breakdown from overheating, arcing, or flashover when subjected to the specified power under the outlined environmental conditions Following the test, it should exhibit no visual damage and meet all electrical requirements.

8.14.4 Information to be given in the detail specification a) Temperature. b) Pressure. c) Relative humidity.

Essai de puissance crête d) Niveau de puissance. e) Fréquence. f) Largeur d’impulsion et rapport cyclique.

Essai de puissance en ondes entretenues g) Niveau de puissance. h) Fréquence.

Cable design and construction

Cables in accordance with, or conforming to, IEC 61196 shall be specified wherever possible,

Where cable designs deviating from IEC 61196 are required, these cables shall comply with the requirements of the relevant detail specification.

Connector design and construction

Connector types should adhere to the applicable sections of IEC 61169 whenever feasible In cases where a unique connector design is necessary, the interface must align with the relevant part of IEC 61169, if available, and the construction of the connector must meet the specifications outlined in the relevant detail specification.

Outline and interface dimensions

a) Outline dimensions shall be in accordance with the relevant detail specification of the cable assembly. b) Interface dimensions shall be in accordance with the relevant detail specification.

Workmanship

There shall be no observable defects in the cable assembly; it shall be clean and in good condition.

Le marquage doit être lisible et conforme à celui qui est indiqué dans la spécification particulière; il doit permettre d’identifier le fabricant du cordon.

Unless otherwise specified in the particular specification, connectors must be equipped with suitable protective materials for transport and storage, ensuring that at least each interface is safeguarded against damage and dust.

L’emballage et l’étiquetage doivent être conformes à ceux qui sont indiqués dans la spécification particulière appropriée, sauf prescription contraire.

L’annexe E fournit un guide relatif à l’assurance de la qualité couvrant l’agrément de savoir- faire ainsi que l’homologation.

Sauf indication contraire, tous les essais doivent être effectués dans les conditions spécifiées dans la CEI 60068.

Before taking measurements, cables should be stored at the measurement temperature for a sufficient duration to ensure they reach that temperature uniformly If measurements are conducted at a temperature different from the normal temperature, the results must be adjusted back to the normal temperature if necessary.

When testing cannot be conducted under normal atmospheric conditions, it is essential to include a note in the test report that describes the actual testing conditions.

The specimen must be visually inspected to ensure that: a) the manufacturing and finishing adhere to industry standards; b) the marking complies with section 5.2 of this specification; c) there is no mechanical deterioration or unintended movement of parts; d) there is no corrosion or flaking on the materials or surfaces.

L’examen peut généralement être effectué en utilisant un grossissement jusqu’à trois.

Les dimensions de l’interface doivent être soumises à un contrôle de conformité avec la spécification particulière applicable en utilisant le matériel d’essai approprié.

Marking

Marking shall be legible and in accordance with the relevant detail specification; it shall identify the manufacturer of the cable assembly.

End caps

Disposable end caps made of appropriate materials must be used to protect connectors during transport and storage, ensuring that each interface is safeguarded from damage and dirt, unless stated otherwise in the specific details.

Packaging and labelling

Packaging and labelling shall be in accordance with the relevant detail specification, unless otherwise specified.

A guide for quality assurance including capability approval as well as qualification approval is given in annex E.

Standard atmospheric conditions for testing

Unless otherwise specified, all tests shall be carried out under the conditions specified in

Before the measurements are made, the cable assemblies shall be stored at the measuring temperature for a time sufficient to allow the entire cable assembly to reach this temperature.

W hen measurements are made at a temperature other than the standard temperature, the result shall, where necessary, be corrected to the standard temperature.

In cases where testing under standard atmospheric conditions is not feasible, the test report must include a note detailing the actual testing conditions.

Visual inspection

The specimen must undergo a visual inspection to confirm that the condition, workmanship, and finish meet satisfactory standards, the marking complies with section 5.2 of the specification, there is no mechanical damage or unwanted movement of parts, and no signs of pitting or flaking in materials or finishes are visible.

Examination may generally be carried out using an instrument with up to three times magnification.

Dimensions inspection

The interface dimensions shall be tested for compliance with the relevant detail specification with the appropriate test equipment.

When using connectors compliant with IEC 61169, the examination of interface dimensions can be focused on characteristics that may vary due to improper assembly, such as the axial dimensions of the reference plane in relation to the dielectric and the internal contact.

Lorsque d'autres connecteurs sont utilisés ou lorsque des prescriptions spéciales existent, les détails doivent être donnés dans la spécification particulière appropriée.

Toute prescription spéciale pour la mesure des dimensions extérieures d’un cordon doit être donnée dans la spécification particulière appropriée.

Determine the amount of signal reflected back to the source by the tested cable in a suitable system The reflection behavior is preferably expressed in terms of reflection losses in dB.

Il convient de mesurer les pertes par réflexion d’un cordon avec un analyseur de réseau adapté.

Pour mesurer les caractéristiques de réflexion de cordons, il faut accorder une attention particulière aux éléments suivants:

Ensure that the scanning speed is low enough for the reflected signal to remain centered within the system's intermediate frequency (IF) filter The longer the cable, the more it is necessary to select a reduced speed.

Cables can exhibit narrow reflection loss transients For continuous network analysis systems, the sweep speed must be low enough, while for digital network analysis systems, the number of measurement points should be high enough to accurately resolve any potential reflection loss transients.

For digital systems, it is recommended that the number of sampling points, denoted as \$n\$, should satisfy the condition \$n \geq \frac{(f_2 - f_1) L}{120}\$, where \$f_1\$ represents the lowest frequency in the range (in MHz) and \$f_2\$ denotes the highest frequency in the range (in MHz).

L est la longueur physique du spécimen d’essai, en m.

Si ces éléments ne sont pas respectés, on peut obtenir une distance trop importante entre les points d’échantillonnage de fréquence, et provoquer ainsi des défauts de mesure importants.

When using connectors that comply with IEC 61169 standards, the inspection of interface dimensions should focus on features that are prone to variation due to improper assembly Key areas to examine include the axial dimensions from the reference plane to the dielectric and the inner contact features.

Where other connectors are used or where special requirements exist, details shall be given in the relevant detail specification.

Any special requirements for the measurement of cable assembly outline dimensions shall be given in the relevant detail specification.

Reflection properties

To assess the signal reflected back to the source by the tested cable assembly in a matched system, it is essential to express the reflection behavior in terms of 'dB return loss'.

The return loss of a cable assembly should be measured with a suitable network analyser.

For the measurement of the reflection characteristics of cable assemblies, special care must be given to the following:

To achieve optimal performance, it is crucial to maintain a slow sweep speed that allows the reflected signal to stay centered within the IF-filter of the receiver system Additionally, as the length of the cable increases, the required sweep speed must decrease accordingly.

Cable assemblies can exhibit narrow return loss spikes To effectively analyze these spikes, continuous network analyzer systems should operate at a low sweep rate, while digital network analyzer systems must utilize a high number of measurement points.

In digital systems, the required number of sampling points, denoted as $ n $, must satisfy the condition $ n \geq \frac{3(f_2 - f_1) L}{120} $ Here, $ f_1 $ represents the lowest frequency in the range measured in MHz, while $ f_2 $ indicates the highest frequency in the same range.

L is the physical length of the test specimen, in m.

Failing to apply these criteria may result in too wide a distance between the frequency sampling points, thus leading to considerable measuring failures.

Reflection losses of cords may not be symmetrical on both sides, and measurements may be necessary for each side Unless otherwise specified in the corresponding particular specification, the worst-case scenario should be included in the specification.

The system must be calibrated with the appropriate connector types If these connectors are unavailable, adapters should be utilized While adapters can lead to increased reflection loss measurements, the results should not be adjusted for the presence of adapters The total reflection losses, including those from the device under test and any adapters, must adhere to the specified limits.