EN 60966-1:1999

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Radio frequency and coaxial assemblies - Part 1: Generic specification - General requirements and test methods (IEC 60966-1:1999)Konfektionierte Koaxial- und Hochfrequenzkabel -- Teil 1: Fachgrundspezifikation - Allgemeine Anforderungen und PrüfverfahrenEnsembles de cordons coaxiaux et de cordons pour fréquences radioélectriques -- Partie 1: Spécification générique - Généralités et méthodes d'essaiRadio frequency and coaxial cable assemblies -- Part 1: Generic specification - General requirements and test methods33.120.10Koaksialni kabli. ValovodiCoaxial cables. WaveguidesICS:Ta slovenski standard je istoveten z:EN 60966-1:1999SIST EN 60966-1:2001en01-februar-2001SIST EN 60966-1:2001SLOVENSKI
STANDARDSIST EN 60966-1:19961DGRPHãþD

NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD60966-1QC 140000Deuxième éditionSecond edition1999-04Ensembles de cordons coaxiaux et de cordonspour fréquences radioélectriques –Partie 1:Spécification générique –Généralités et méthodes d'essaiRadio frequency and coaxial cable assemblies –Part 1:Generic specification –General requirements and test methods Commission Electrotechnique Internationale International Electrotechnical CommissionPour prix, voir catalogue en vigueurFor price, see current catalogueÓ IEC 1999
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Copyright - all rights reservedAucune partie de cette publication ne peut être reproduite niutilisée sous quelque forme que ce soit et par aucun procédé,électronique ou mécanique, y compris la photo-copie et lesmicrofilms, sans l'accord écrit de l'éditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permission inwriting from the publisher.International Electrotechnical Commission 3, rue de Varembé
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IEC web site
http://www.iec.chCODE PRIXPRICE CODE XASIST EN 60966-1:2001

60966-1 © IEC:1999– 3 –CONTENTSPageFOREWORD.11Clause1Scope.132Normative references.133Definitions.154Design and manufacturing requirements.194.1Cable design and construction.194.2Connector design and construction.194.3Outline and interface dimensions.195Workmanship, marking and packaging.195.1Workmanship.195.2Marking.215.3End caps.215.4Packaging and labelling.216Quality assessment.217Test methods – General.217.1Standard atmospheric conditions for testing.217.2Visual inspection.217.3Dimensions inspection.218Electrical tests.238.1Reflection properties.238.2Uniformity of impedance.258.3Insertion loss.258.4Insertion loss stability.278.5Propagation time.278.6Stability of electrical length.278.7Phase difference.338.8Phase variation with temperature.358.9Screening effectiveness.358.10Voltage proof.378.11Insulation resistance.378.12Inner and outer conductor continuity.398.13Void.398.14Power rating.398.15Intermodulation level measurement.41SIST EN 60966-1:2001

60966-1 © IEC:1999– 5 –ClausePage9Mechanical robustness tests.419.1Tensile.419.2Flexure.419.3Flexing endurance.439.4Cable assembly crushing.459.5Torque.479.6Multiple bending.499.7Abrasion test of cable assembly.519.8Vibrations, shocks and impact.519.9Mechanical endurance.5110Environmental tests.5110.1Recommended severities.5110.2Vibration, bumps and shock.5110.3Climatic sequence.5110.4Damp heat, steady state.5310.5Rapid change of temperature.5310.6Solvents and contaminating fluids.5510.7Water immersion.5510.8Salt mist and sulphur dioxide tests.5510.9Dust tests.5710.10Flammability.6111Specialized test methods.6312Test schedules.63Annex A (normative)
Test methods for insertion loss determination.65A.1Purpose.65A.2Test methods.65A.2.1Test method 1 .65A.2.2Test method 2 .69A.2.3Test method 3.71A.3Correction for characteristic impedance differences.75Annex B (informative)
Measuring methods for propagation time.77B.1Resonance method for propagation time measurement.77B.2Time domaine method for propagation time measurement.79Annex C (informative)
Measurement method for screening effectiveness.81C.1Introduction.81C.2Test method.83Annex D (informative)
Recommended severities for environmental tests.87D.1Introduction to the relationship between environmental conditionsand test severities.87D.1.1General.87D.1.2Environmental conditions.87D.1.3Environmental testing.87SIST EN 60966-1:2001

60966-1 © IEC:1999– 7 –AnnexesPageD.2Severities for environmental testing.89D.2.1Vibration.89D.2.2Bump.91D.2.3Shock.91D.2.4Climatic sequence.93D.2.5Damp heat, steady state.93D.2.6Rapid change of temperature.93D.2.7Salt mist.93D.2.8Sulphur dioxide test.93D.2.9Dust test.93Annex E (normative)
Quality assessment.95E.1Object.95E.2General.95E.2.1Related documents.95E.2.2Standards and preferred values.95E.2.3Marking of the cable assembly and packaging.95E.2.4Terminology.97E.3Quality assessment procedures.97E.3.1Procedures for qualification approval.97E.3.2Procedures for capability approval.99E.3.3Quality conformance inspection.101E.4Capability manual and approval.103E.4.1Responsibilities.103E.4.2Contents of the capability manual.105E.4.3Criteria for capability limits.107TablesD.1Relationship between displacement and acceleration.91D.2Relationship between peak acceleration and velocity change.91E.1Example of capability limits for cable assemblies.107E.2Example of capability limits for flexible cables.107E.3Example of capability limits for connectors.107E.4Example of flow chart.109Figures1Bending test: U shape assembly.292Bending test: straight assembly.313Twisting test: U shape assembly.334Fixture for cable assembly flexure test.435Apparatus for cable assembly flexing endurance test.456Fixture for cable crushing test.477Multiple bending test.498Dust measuring device.61SIST EN 60966-1:2001

60966-1 © IEC:1999– 9 –FigurePageA.1Circuit for the determination of insertion loss.65A.2Circuit for the determination of insertion loss.69A.3Alternative circuit for the determination of insertion loss.69A.4Double-pass circuit for the determination of insertion loss.71B.1Arrangement of test equipment.77C.1Line injection test circuit for coaxial cable assemblies.81C.2Schematic transfer functions of a coaxial cable assembly.81C.3Complete installation for practical screening effectiveness measurements.85D.1Description of action needed for the preparation of the environmentaltest specification.89SIST EN 60966-1:2001

60966-1 © IEC:1999– 11 –INTERNATIONAL ELECTROTECHNICAL COMMISSION–––––––––––––RADIO FREQUENCY AND COAXIAL CABLE ASSEMBLIES –Part 1: Generic specification – General requirements and test methodsFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in addition to other activities, the IEC publishes International Standards. Their preparation isentrusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation. The IEC collaborates closely with the International Organizationfor Standardization (ISO) in accordance with conditions determined by agreement between the twoorganizations.2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the formof standards, technical reports or guides and they are accepted by the National Committees in that sense.4)In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standards.6)
Attention is drawn to the possibility that some of the elements of this International Standard may be the subjectof patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 60966-1 has been prepared by subcommittee 46A: Coaxial cables,of IEC technical committee 46: Cables, wires, waveguides, r.f. connectors and accessories forcommunication and signalling.This second edition cancels and replaces the first edition published in 1988, amendment 1(1990) and amendment 2 (1995) and constitutes a technical revision.The text of this standard is based on the following documents:FDISReport on voting46A/343/FDIS46A/346/RVDFull information on the voting for the approval of this standard can be found in the report onvoting indicated in the above table.Annexes A and E form an integral part of this standard.Annexes B, C and D are for information only.SIST EN 60966-1:2001

60966-1 © IEC:1999– 13 –RADIO FREQUENCY AND COAXIAL CABLE ASSEMBLIES –Part 1: Generic specification – General requirements and test methods1 ScopeThis International Standard specifies requirements for radio frequency coaxial cableassemblies operating in the transverse electromagnetic mode (TEM) and establishes generalrequirements for testing the electrical, mechanical and environmental properties of radiofrequency coaxial cable assemblies composed of cables and connectors. Additionalrequirements relating to specific families of cable assemblies are given in the relevantsectional specifications.NOTE 1 – The design of the cables and connectors used should preferably conform to the applicable parts ofIEC 61196 and IEC 61169 respectively.NOTE 2 – This specification does not include tests which are normally performed on the cables and connectorsseparately. These tests are described in IEC 61196-1 and IEC 61169-1 respectively.NOTE 3 – Wherever possible, cables and connectors used in cable assemblies, even if they are not described inthe IEC 61196 or IEC 61169 series are tested separately according to the tests given in the relevant genericspecification.NOTE 4 – Where additional protection is applied to a cable assembly, the mechanical and environmental testsdescribed in this standard are applicable.2 Normative referencesThe following normative documents contain provisions which, through reference in this text,constitute provisions of this part of IEC 60966. At the time of publication, the editions indicatedwere valid. All normative documents are subject to revision, and parties to agreements basedon this part of IEC 60966 are encouraged to investigate the possibility of applying the mostrecent editions of the normative documents indicated below. Members of IEC and ISO maintainregisters of currently valid International Standards.IEC 60068-2-3:1969, Environnmental testing – Part 2: Tests – Test Ca: Damp heat, steadystateIEC 60068-2-6:1995, Environnmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)IEC 60068-2-11:1981, Environnmental testing – Part 2: Tests – Test Ka: Salt mistIEC 60068-2-14:1984, Environnmental testing – Part 2: Tests – Test N: Change of temperatureIEC 60068-2-27:1987, Environnmental testing – Part 2: Tests – Test Ea and guidance: ShockIEC 60068-2-29:1987, Environnmental testing – Part 2: Tests – Test Eb and guidance: BumpIEC 60068-2-42:1982, Environnmental testing – Part 2: Tests – Test Kc: Sulphur dioxide testfor contacts and connectionsSIST EN 60966-1:2001

60966-1 © IEC:1999– 15 –IEC 60068-2-68:1994, Environmental testing – Part 2: Tests – Test L: Dust and sandIEC 60096-1:1986, Radio frequency cables – Part 1: General requirements and measuringmethodsIEC 60332-1:1993, Tests on electric cables under fire conditions – Part 1: Test on a singlevertical insulated wire or cableIEC 60339 (all parts), General purpose rigid coaxial transmission lines and their associatedflange connectorsIEC 60512-5:1992, Electromechanical components for electronic equipment, basic testingprocedures and measuring methods – Part 5: Impact tests (free components), static load tests(fixed components), endurance tests and overload testsIEC 61169-1:1992, Radio-frequency connectors – Part 1: Generic specification – Generalrequirements and measuring methodsIEC 61196-1:1995, Radio-frequency cables – Part 1: Generic specification – Generaldefinitions, requirements and test methodsIEC 61726:1995, Cable assemblies, cables, connectors and passive microwave components –Screening attenuation measurement by the reverberation chamber methodIEC QC 001002:1986, Rules of procedure of the IEC quality assessment system for electroniccomponents (IECQ)ISO 9000, Quality management and quality assurance standardsISO 9001:1994, Quality systems – Model for quality assurance in design, development,production, installation and servicingISO 9002:1994, Quality systems – Model for quality assurance in production, installation andservicing3 DefinitionsFor the purpose of this part of IEC 60966, the following definitions apply.3.1cable assemblya combination of cable(s) and connector(s) with or without any additional protection and withspecified performance, used as a single unit3.1.1flexible cable assemblya cable assembly where the cable is capable of repeated flexure. The cable usually has a braidouter conductor3.1.2semi-flexible cable assemblya cable assembly not intended for applications requiring repeated flexure of the cable inservice, but bending or forming is permissible to facilitate installationSIST EN 60966-1:2001

60966-1 © IEC:1999– 17 –3.1.3semi-rigid cable assemblya cable assembly not intended to be bent or flexed after manufacture. Any bending or flexingduring installation or use may degrade the performance of the cable assembly3.2insertion lossthe loss introduced by inserting a cable assembly into a system. In this standard, it is the ratio,expressed in decibels, of the power (P1) delivered to a load connected directly to a source andthe power (P2) delivered to a load when the cable assembly is inserted between the sourceand the loadInsertionlossPP =´æèçöø÷1012log3.3reflection factorthe ratio of the complex wave amplitude of the reflected wave to the complex wave amplitudeof the incident wave at a port or transverse cross-section of a transmission line3.4electrical lengththe equivalent free-space length of the cable assembly3.5electrical length differencethe difference in electrical length between cable assemblies3.6phase differencethe difference in phase between a transverse electromagnetic mode (TEM) wave which hastraversed the cable assembly and an identical wave which has traversed another cableassembly3.7propagation timethe time taken for the propagation of a TEM wave between the reference planes of the twoconnectors3.8minimum static bending radiusthe radius used in climatic tests. It is the minimum permissible radius for fixed installation ofthe cable3.9dynamic bending radiusthe bending radius is used for the insertion loss stability, stability of electrical length and flexingendurance tests, and is the minimum bending radius for applications where the cable assemblyis flexed. Larger bending radii will allow the increase of the maximum number of flexuresSIST EN 60966-1:2001

60966-1 © IEC:1999– 19 –3.10
screening effectiveness3.10.1transfer impedancethe quotient of the induced voltage on the inside of the cable assembly and the inducingcurrent outside the assembly. In practice, this is between defined points on connectors matedto the connectors of the cable assembly3.10.2screening attenuationthe ratio of the signal power inside the cable assembly to the total power that radiates outsidethe cable assembly3.11power ratingthe input power which may be handled continuously by the cable assembly when terminated byits characteristic impedanceNOTE 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 isnormally specified at an ambient temperature of 40 °C.3.12artificial ageinga process used to improve the stability of phase attenuation and expansion with temperature.This process normally consists of submitting the complete cable assembly to a number oftemperature cycles. Unless otherwise specified in the relevant detail specification, submittingthe complete cable assembly to artificial ageing is optional, at the discretion of the supplier4 Design and manufacturing requirements4.1 Cable design and constructionCables 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 withthe requirements of the relevant detail specification.4.2 Connector design and constructionConnector types conforming to the relevant part of IEC 61169 shall be specified whereverpossible, but where a special connector design is required, the interface shall conform to therelevant part of IEC 61169, where available, and the connector construction shall comply withthe requirements of the relevant detail specification.4.3 Outline and interface dimensionsa)Outline dimensions shall be in accordance with the relevant detail specification of the cableassembly.b)Interface dimensions shall be in accordance with the relevant detail specification.5 Workmanship, marking and packaging5.1 WorkmanshipThere shall be no observable defects in the cable assembly; it shall be clean and in goodcondition.SIST EN 60966-1:2001

60966-1 © IEC:1999– 21 –5.2 MarkingMarking shall be legible and in accordance with the relevant detail specification; it shall identifythe manufacturer of the cable assembly.5.3 End capsUnless otherwise specified in the relevant detail specification, disposable end caps of suitablematerial for transport and storage shall be fitted to the connectors to protect at least eachinterface from damage and dirt.5.4 Packaging and labellingPackaging and labelling shall be in accordance with the relevant detail specification, unlessotherwise specified.6 Quality assessmentA guide for quality assurance including capability approval as well as qualification approval isgiven in annex E.7 Test methods – General7.1 Standard atmospheric conditions for testingUnless otherwise specified, all tests shall be carried out under the conditions specified inIEC 60068.Before the measurements are made, the cable assemblies shall be stored at the measuringtemperature for a time sufficient to allow the entire cable assembly to reach this temperature.When measurements are made at a temperature other than the standard temperature, theresult shall, where necessary, be corrected to the standard temperature.NOTE – Where it is impracticable to carry out tests under the standard atmospheric conditions for testing, a note tothis effect, stating the actual conditions of tests, should be added to the test report.7.2 Visual inspectionThe specimen shall be visually examined to ensure that:a)the condition, workmanship and finish are satisfactory;b)the marking is in accordance with 5.2 of this specification;c)there is no mechanical damage, undesired movement or displacement of parts;d)no pitting or flaking of materials or finishes is apparent.Examination may generally be carried out using an instrument with up to three timesmagnification.7.3 Dimensions inspection7.3.1 Interface dimensionsThe interface dimensions shall be tested for compliance with the relevant detail specificationwith the appropriate test equipment.SIST EN 60966-1:2001

60966-1 © IEC:1999– 23 –Where connectors conforming to IEC 61169 are used, inspection of interface dimensions maybe limited to those features likely to vary as a result of incorrect assembly, for example theaxial dimensions from reference plane to dielectric, and to inner contact features.Where other connectors are used or where special requirements exist, details shall be given inthe relevant detail specification.7.3.2 Outline dimensionsAny special requirements for the measurement of cable assembly outline dimensions shall begiven in the relevant detail specification.8 Electrical tests8.1 Reflection properties8.1.1 ObjectTo determine the amount of signal that is reflected back to the signal source by the cableassembly under test in a matched system. The reflection behaviour is preferably expressed interms of 'dB return loss'.8.1.2 ProcedureThe 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 mustbe given to the following:–ensure that the sweep speed is slow enough for the reflected signal to remain in the centreof the IF-filter of the receiver system. The longer the cable, the slower the sweep speedthat must be chosen;–cable assemblies might have narrow return loss spikes. For continuous network analyser-systems, the sweep rate shall be low enough and for digital network analyser-systems, thenumber of measurement points shall be high enough for resolving eventual return lossspikes.For example, for digital systems, the number of points should be:n ³ 3(f2 – f1) L / (120)wherenis the number of sampling points in the frequency range f1 to f2 forming the responsecurve;f1is the lowest frequency in the range, in MHz;f2is the highest frequency in the range, in MHz;Lis the physical length of the test specimen, in m.Failing to apply these criteria may result in too wide a distance between the frequency samplingpoints, thus leading to considerable measuring failures.SIST EN 60966-1:2001

60966-1 © IEC:1999– 25 –The return loss of cable assemblies is not necessarily symmetrical for both sides, andmeasurements from both sides might be required. Unless otherwise stated in the relevantdetail specification, the worse case has to be within the specification.The system has to be calibrated with the appropriate connector types. If these are notavailable, then adapters have to be used. The adapters will give a deterioration in themeasured return loss, but, the result shall not be corrected for the adapters. The combinedreturn loss, including the adapters, shall be within the specification.Other techniques for measuring the reflection characteristics of a cable assembly may be usedif agreed by the customer.8.1.3 RequirementsThe measured return loss values shall be within the specified limits.8.1.4 Information to be given in the detail specificationa)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.8.2 Uniformity of impedance8.2.1 ObjectTo determine the variation of local characteristic impedance of the cable assembly.8.2.2 ProcedureMeasurement is made using a time domain reflectometer (TDR) with input step applied to thecable assembly through an air line acting as an impedance reference. Impedance variationalong the assembly shall be observed.Alternatively, a system using frequency domain to time domain conversion may be used.8.2.3 RequirementsTo be as specified in the relevant detail specification.8.2.4 Information to be given in the detail specificationa)Rise time of the TDR system.b)Limits of impedance variation.8.3 Insertion loss8.3.1 ProcedureThe insertion loss shall be inspected in accordance with annex A.SIST EN 60966-1:2001

60966-1 © IEC:1999– 27 –8.3.2 RequirementsThe insertion loss shall not exceed the specified limits at any frequency within the frequencyband indicated in the relevant detail specification.8.3.3 Information to be given in the detail specificationa)Maximum insertion loss, if appropriate, as a function of frequency.b)Frequency range.8.4 Insertion loss stability8.4.1 ObjectTo determine the change of attenuation at a given frequency when the cable assembly issubjected to dynamic bending.8.4.2 ProcedureDuring insertion loss measurement according to 8.3, the cable is wound on a mandrel of radiusequal to the dynamic bending radius and using the number of turns indicated in the relevantdetail specification.8.4.3 RequirementsDuring and after the test, the specified change of insertion loss given in the relevant detailspecification shall not be exceeded.8.4.4 Information to be given in the detail specificationa)Dynamic bending radius of the cable (radius of the mandrel).b)Number of turns and portion of the cable assembly on the mandrel.c)Test frequencies.d)Maximum change of insertion loss.8.5 Propagation time8.5.1 ProcedureThe propagation time is inspected in accordance with annex B.8.5.2 RequirementsThe propagation time shall not exceed the limits indicated in the relevant detail specification.8.5.3 Information to be given in the detail specificationa)Frequency band in which the measurement is carried out (see clause B.1) or rise time ofthe system (see clause B.2).b)Propagation time and tolerance.8.6 Stability of electrical length8.6.1 ObjectTo determine the change of phase caused by the change in electrical length when the cableassembly is subjected either to bending or twisting.SIST EN 60966-1:2001

60966-1 © IEC:1999– 29 –8.6.2 Procedures8.6.2.1 BendingMethod 1A cable assembly which is of a U shape has to be connected to a suitable network analyser(NWA), (see figure 1a). During recording of the phase of the transmitting signal, the cable iswound around the mandrel for 180° (see figure 1b), unwound to the starting position, woundcounter-clockwise for 180° around the mandrel (see figure 1c) and again unwound to itsstarting position. The initial position of the mandrel shall be chosen so that only the straightparts of the U will be bent during the test.DUTNWATest portsIEC
409/99Figure 1a – Start positionDUTNWATest portsIEC
410/99Figure 1b – First bendDUTNWATest portsIEC
411/99Figure 1c – Second bendFigure 1 – Bending test: U shape assemblySIST EN 60966-1:2001

60966-1 © IEC:1999– 31 –Method 2A cable assembly which is of a straight shape (see figure 2a) has to be terminated by a short atone end and connected to a suitable network analyser at the other end. During the recording ofthe phase of the reflected signal, the cable is first wound clockwise around the mandrel for onehalf turn (see figure 2b), released to the starting position then wound anti-clockwise around themandrel (see figure 2c) and again released to its starting position.DUTShortNWATest portsIEC
412/99Figure 2a – Start positionDUTShortNWATest portsIEC
413/99Figure 2b – First bendDUTShortNWATest portsIEC
414/99Figure 2c – Second bendFigure 2 – Bending test: straight assembly8.6.2.2 TwistingA cable assembly which is of a U shape has to be connected to a suitable network analyser(see figure 3a). During the recording of the phase of the transmitting signal the mandrel in themiddle of the cable is first twisted in a clockwise direction for 180° (see figure 3b) thenreleased to the starting position, twisted counter-clockwise for 180° (see figure 3c) and againreleased to its 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.SIST EN 60966-1:2001

60966-1 © IEC:1999– 33 –DUTNWATest portsIEC
415/99Figure 3a – Start positionDUTDUTNWATest portsIEC
416/99Figure 3b – First twistDUTDUTNWATest portsIEC
417/99Figure 3c – Second twistFigure 3 – Twisting test: U shape assembly8.6.3 RequirementsThe phase difference shall not exceed the limits specified in the relevant detail specification.8.6.4 Information to be given in the detail specificationa)Radius of mandrel (usually dynamic bending radius of the cable).b)Test frequency.c)Maximum change of phase.8.7 Phase difference8.7.1 ObjectTo measure the phase difference between two or more cable assemblies.8.7.2 ProcedureMeasurements shall be made using a suitable network analyser of appropriate resolution.Alternatively, a slotted line may be used where frequency and accuracy requirements permit.8.7.3 RequirementsThe phase difference shall not exceed the limits specified in the relevant detail specification.SIST EN 60966-1:2001

60966-1 © IEC:1999– 35 –8.7.4 Information to be given in the detail specificationa)Maximum phase difference or nominal phase difference with tolerances.b)Frequency.8.8 Phase variation with temperature8.8.1 ObjectTo determine the changes of phase caused by the change in the electrical length when thecable assembly is subjected to various temperatures within its operating temperature range.When specified in the relevant detail specification this test may be conducted on a specimencable assembly rather than a finished cable assembly. The specimen cable assembly shall beidentical to the finished cable assembly except for its length and its shape.8.8.2 ProcedureMeasurements shall be made using a suitable network analyser with the cable assembly,including its connectors, in a controlled temperature chamber. Details of any cable supportsshall be given in the relevant detail specification.Where tests are made on a specimen cable assembly, the cable shall form one or moreunsupported loops of a diameter at least ten or more times the minimum static bending radius.Six temperature cycles shall be used. Alternatively, a slotted line can be used where frequencyand accuracy requirements permit.8.8.3 RequirementsDuring the test, the phase variation shall not exceed the limits specified in the relevant detailspecification.8.8.4 Information to be given in the detail specificationa)Temperature range and temperature against time cycle.b)Measurement frequency.c)Method of presenting the results for example °el /°C.d)Admissible phase variation.e)Configuration of substitute specimen cable assembly, when allowed.8.9 Screening effectivenessThe screening effectiveness shall be tested. Applicable tests are given in annex C or inIEC 61726. The relevant detail specification shall identify the applicable test, the frequencyrange and the minimum value of screening effectiveness.SIST EN 60966-1:2001

60966-1 © IEC:1999– 37 –8.10 Voltage proof8.10.1 ProcedureEach cable assembly shall withstand, without breakdown or flashover, the voltage specified bythe relevant detail specification. The minimum value of the test voltage derived from the ratedworking voltage U of the cable assembly and the test voltage E (both expressed as d.c. or a.c.peak) is given by:E = 3 U for cable assemblies having a rated working voltage up to and including 1 kV,orE = 1,5 U with a minimum of 3 kV for cable assemblies having a rated working voltageexceeding 1 kV.The peak a.c. voltage stated in the relevant detail specification, at a frequency between 40 Hzand 60 Hz, shall be applied between the inner and outer conductors of the cable assemblyusing a mated connector as an 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 detailspecification.8.10.2 RequirementsThere shall be no breakdown or flashover.8.10.3 Information to be given in the detail specificationa)Test voltage.b)Any special requirements.8.11 Insulation resistance8.11.1 ProcedureThe insulation resistance shall be measured between the inner and outer conductor of thecable assembly with a direct voltage of 500 V ± 50 V or with the rated voltage of the cableassembly, whichever is less.The insulation resistance shall be measured after a stabilisation time of 60 s ± 5 s, unlessotherwise specified in the relevant detail specification.8.11.2 RequirementsThe value of the insulation resistance shall not be less than that indicated in the detailspecification.8.11.3 Information to be given in the detail specificationa)Test voltage.b)Stabilization time.c)Resistance value.SIST EN 60966-1:2001

60966-1 © IEC:1999– 39 –8.12 Inner and outer conductor continuity8.12.1 ObjectTo ensure the d.c. and low frequency continuity of the inner and outer conductors.8.12.2 ProcedureAny appropriate method may be used.8.12.3 RequirementsThere 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 specificationa)Test voltage.b)Test current.c)Frequency.8.13 Void8.14 Power rating8.14.1 ObjectThe power rating of a cable assembly is defined as the input power at any specified frequency,temperature and pressure, which can be handled continuously when the cable assembly isterminated by a load corresponding to the characteristic impedance.A limitation may be either the maximum permissible operating voltage or the maximum innerconductor 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.8.14.2 ProcedureThe test shall be performed in accordance with 11.19 of IEC 61196-1 taking into account anyevidence of arcing and mechanical displacement of the solder or mechanical joint.8.14.3 RequirementsThere shall be no evidence of breakdown due to overheating, arcing or flashover throughoutthe application of the specified power related to the environmental conditions as stated in therelevant detail specification. After the test, the cable assembly shall show no visual damageand the electrical requirements shall be satisfied.8.14.4 Information to be given in the detail specificationa)Temperature.b)Pressure.c)Relative humidity.SIST EN 60966-1:2001

60966-1 © IEC:1999– 41 –Peak power testd)Power level.e)Frequency.f)Pulse width and duty cycle.CW power testg)Power level.h)Frequency.8.15 Intermodulation level measurementUnder consideration.9 Mechanical robustness tests9.1 Tensile9.1.1 ObjectTo determine the mechanical strength and, when required, electrical stability of the cableassembly when subjected to an axial force.9.1.2 ProcedureA tensile force as stated in the relevant detail specification shall be applied to the twoconnectors along the common axis of the cable and connectors. When the length or shape ofthe cable makes this impossible, the force shall be applied between the cable and eachconnector in turn.NOTE – When the force cannot be applied between the two connectors, these tests are normally destructive
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