BS EN 60603-7:2009+A1:2011 BSI Standards Publication Connectors for electronic equipment — Part 7: Detail specification for 8-way, unshielded, free and fixed connectors BRITISH STANDARD BS EN 60603-7:2009+A1:2011 National foreword This British Standard is the UK implementation of EN 60603-7:2009+A1:2011 It is identical to IEC 60603-7:2008 incorporating amendment 1:2011 It supersedes BS EN 60603-7:2009 which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to IEC text carry the number of the IEC amendment For example, text altered by IEC amendment is indicated by !" The UK participation in its preparation was entrusted to Technical Committee EPL/48, Electromechanical components and mechanical structures for electronic equipment A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2012 ISBN 978 580 70674 ICS 31.220.10 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2010 Amendments/corrigenda issued since publication Date Text affected 31 January 2012 Implementation of IEC amendment 1:2011 with CENELEC endorsement A1:2011 EUROPEAN STANDARD EN 60603-7:2009+A1 NORME EUROPÉENNE EUROPÄISCHE NORM November 2011 ICS 31.220.10 Supersedes EN 60603-7:2009 English version Connectors for electronic equipment Part 7: Detail specification for 8-way, unshielded, free and fixed connectors (IEC 60603-7:2008) Connecteurs pour équipements électroniques Partie 7: Spécification particulière pour les fiches et les embases non écrantées voies (CEI 60603-7:2008) Steckverbinder für elektronische Einrichtungen Teil 7: Bauartspezifikation für ungeschirmte freie und feste Steckverbinder, 8polig (IEC 60603-7:2008) This European Standard was approved by CENELEC on 2009-09-01 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels © 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 60603-7:2009 E BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) –2– Foreword The text of document 48B/1883A/FDIS, future edition of IEC 60603-7, prepared by SC 48B, Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60603-7 on 2009-09-01 This European Standard supersedes EN 60603-7:1997 EN 60603-7:2009 includes the following significant technical changes with respect to EN 60603-7:1997: – drawings and test schedules were updated based on the work done developing EN 60603-7-4; – a corrected figure (Figure 10) illustrating a connector de-rating curve has been prepared and inserted in the text; – Annex D contains the dimensions that define the panel mounting features on the connector and panel that were referenced as the Type A, variant 03 connector in EN 60603-7:1997 The following dates were fixed: – latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-06-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-09-01 Annex ZA has been added by CENELEC Endorsement notice The text of the International Standard IEC 60603-7:2008 was approved by CENELEC as a European Standard without any modification In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60603-7-2 NOTE Harmonized as EN 60603-7-2:2009 (not modified) IEC 60603-7-3 NOTE Harmonized as EN 60603-7-3:2009 (not modified) IEC 60603-7-4 NOTE Harmonized as EN 60603-7-4:2005 (not modified) IEC 60603-7-5 NOTE Harmonized as EN 60603-7-5:2009 (not modified) IEC 60603-7-7 NOTE Harmonized as EN 60603-7-7:2006 (not modified) IEC 61169-16 NOTE Harmonized as EN 61169-16:2007 (not modified) Foreword to amendment A1 The text of document 48B/2145/CDV, future edition of IEC 60603-7:2008/A1, prepared by SC 48B, “Connectors”, of IEC/TC 48, “Electromechanical components and mechanical structures for electronic equipment” was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60603-7:2009/A1:2011 The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement • latest date by which the national standards conflicting with the document have to be withdrawn (dop) 2012-08-03 (dow) 2014-11-03 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights Endorsement notice The text of the International Standard IEC 60603-7:2008/A1:2011 was approved by CENELEC as a European Standard without any modification –3– BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies Publication Year Title EN/HD Year IEC 60050-581 - 1) IEC 60068-1 - 1) Environmental testing Part 1: General and guidance EN 60068-1 1994 2) IEC 60068-2-14 - 1) Environmental testing Part 2-14: Tests - Test N: Change of temperature EN 60068-2-14 2009 2) IEC 60068-2-38 - 1) Environmental testing Part 2-38: Tests - Test Z/AD: Composite temperature/humidity cyclic test EN 60068-2-38 2009 2) IEC 60352-2 - 1) Solderless connections Part 2: Crimped connections - General requirements, test methods and practical guidance EN 60352-2 2006 2) IEC 60352-3 - 1) Solderless connections Part 3: Solderless accessible insulation displacement connections - General requirements, test methods and practical guidance EN 60352-3 1994 2) IEC 60352-4 - 1) Solderless connections Part 4: Solderless non-accessible insulation displacement connections - General requirements, test methods and practical guidance EN 60352-4 1994 2) IEC 60352-5 - 1) Solderless connections Part 5: Press-in connections - General requirements, test methods and practical guidance EN 60352-5 2008 2) IEC 60352-6 - 1) Solderless connections Part 6: Insulation piercing connections General requirements, test methods and practical guidance EN 60352-6 1997 2) IEC 60352-7 - 1) Solderless connections Part 7: Spring clamp connections - General requirements, test methods and practical guidance EN 60352-7 2002 2) 1) 2) Undated reference Valid edition at date of issue International Electrotechnical Vocabulary (IEV) Part 581: Electromechanical components for electronic equipment - BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) –4– Publication Year IEC 60512 Series Connectors for electronic equipment - Tests and measurements IEC 60512-1-100 - IEC 60603-7 Series Connectors for electronic equipment EN 60603-7 Part 7: Detail specifications for 8-way free and fixed connectors IEC 60664-1 - IEC 61076-1 2006 IEC 61156 Series Multicore and symmetrical pair/quad cables for digital communications IEC 61156-1 - 1) IEC 61156-2 - IEC 61156-3 1) 1) Title EN/HD Year EN 60512 Series Connectors for electronic equipment - Tests EN 60512-1-100 and measurements Part 1-100: General - Applicable publications 2006 2) Series Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests EN 60664-1 2007 Connectors for electronic equipment Product requirements Part 1: Generic specification EN 61076-1 2006 - - Multicore and symmetrical pair/quad cables for digital communications Part 1: Generic specification - - 1) Multicore and symmetrical pair/quad cables for digital communications Part 2: Horizontal floor wiring - Sectional specification - - - 1) Multicore and symmetrical pair/quad cables for digital communications Part 3: Work area cable - Sectional specification - - IEC 61156-4 - 1) Multicore and symmetrical pair/quad cables for digital communications Part 4: Riser cables - Sectional specification - - IEC 61156-5 - 1) Multicore and symmetrical pair/quad cables for digital communications Part 5: Symmetrical pair/quad cables with transmission characteristics up to 000 MHz Horizontal floor wiring - Sectional specification - IEC 61156-6 - 1) Multicore and symmetrical pair/quad cables for digital communications Part 6: Symmetrical pair/quad cables with transmission characteristics up to 000 MHz Work area wiring - Sectional specification - IEC 61156-7 - 1) Multicore and symmetrical pair/quad cables for digital communications Part 7: Symmetrical pair cables with transmission characteristics up to 200 MHz - Sectional specification for digital and analog communication cables - ISO/IEC 11801 - 1) Information technology - Generic cabling for customer premises - - ISO 1302 - 1) Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation EN ISO 1302 2002 2) 2) –5– Publication Year Title ITU-T Recommendation K.20 2000 3) ITU-T Recommendation K.44 2000 4) 3) 4) BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) EN/HD Year Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents - Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation - - ITU-T Recommendation K.20 is superseded by ITU-T Recommendation K.20:2003 but for the purpose of this standard, the 2000 edition applies ITU-T Recommendation K.44 is superseded by ITU-T Recommendation K.44:2003 but for the purpose of this standard, the 2000 edition applies BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) –2– CONTENTS INTRODUCTION General 1.1 Scope 1.2 Normative references Terms and definitions 10 Common features and typical connector pair 11 3.1 3.2 View showing typical fixed and free connectors 11 Mating information 11 3.2.1 General 11 3.2.2 Contacts – mating conditions 12 3.2.3 Fixed connector 14 3.2.4 Free connector 17 Cable terminations and internal connections – Fixed and free connectors 19 4.1 4.2 General 19 Termination types 19 4.2.1 Solder terminations (under consideration) 19 4.2.2 Solderless terminations 19 Gauges 20 5.1 Fixed connectors 20 5.2 Free connectors 23 Characteristics 25 6.1 6.2 6.3 6.4 General 25 Pin and pair grouping assignment 25 Classification into climatic category 25 Electrical characteristics 26 6.4.1 Creepage and clearance distances 26 6.4.2 Voltage proof 26 6.4.3 Current-temperature derating 26 6.4.4 Initial contact resistance – interface only (separable fixed and free contact) 27 6.4.5 Input to output d.c resistance 27 6.4.6 Input-to-output d.c resistance unbalance 27 6.4.7 Initial insulation resistance 28 6.4.8 Transfer impedance 28 6.5 Transmission characteristics 28 6.6 Mechanical characteristics 28 6.6.1 Mechanical operation 28 6.6.2 Effectiveness of connector coupling devices 28 6.6.3 Insertion and withdrawal forces 28 Tests and test schedule 28 7.1 7.2 7.3 7.4 7.5 General 28 Arrangement for contact resistance test 29 Arrangement for vibration test (test phase CP1) 30 Test procedures and measuring methods 30 Preconditioning 31 –3– BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) 7.6 Wiring and mounting of specimens 31 7.6.1 Wiring 31 7.6.2 Mounting 31 7.7 Test schedules 31 7.7.1 Basic (minimum) test schedule 31 7.7.2 Full test schedule 31 Annex A (normative) Gauging continuity procedure 39 Annex B (normative) Locking-device mechanical operation 43 Annex C (normative) Gauge requirements 44 Annex D (normative) Keystone connector information 45 Bibliography 47 Figure – View showing typical fixed and free connectors 11 Figure – Contact interface dimensions with terminated free connector 12 Figure – Fixed connector details 15 Figure – Free connector view 17 Figure – “Go” gauge 20 Figure – “No-go” gauges 22 Figure – “No-go” gauges 23 Figure – “Go” gauge 24 Figure – Fixed connector pin and pair grouping assignment (front view of connector) 25 Figure 10 – Connector de-rating curve 27 Figure 11 – Arrangement for contact resistance test 29 Figure 12 – Arrangement for vibration test 30 Figure A.1 – Gauge 41 Figure A.2 – Gauge insertion 42 Figure D.1 – Keystone connector 45 Figure D.2 – Panel drawing 46 Table – Dimensions for Figure 13 Table – Dimensions for Figure 16 Table – Dimensions for Figure 18 Table – Dimensions for Figures and 22 Table – Dimensions for Figure 23 Table – Dimensions for Figure 24 Table – Climatic categories – selected values 25 Table – Creepage and clearance distances 26 Table – Test group P 32 Table 10 – Test group AP 33 Table 11 – Test group BP 35 Table 12 – Test group CP 36 Table 13 – Test group DP 37 Table 14 – Test group EP 38 Table 15 – Test group FP 38 Table A.1 – Dimensions for Figure A.1 40 BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) –4– Table D.1 – Dimensions for Figure D.1 45 Table D.2 – Dimensions 46 BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) 7.7.2.5 – 36 – Test group CP Table 12 – Test group CP Test phase CP1 Test Title Vibration IEC 60512 Test No !6d" Measurement to be performed Severity or condition of test f = 10 Hz to 500 Hz, Amplitude = 0,35 mm Title IEC 60512 Test No Requirements Contact disturbance 2e 10 μs maximum Contact resistance 2a !Text deleted " 20 m Ω maximum change from initial Acceleration = 50 m/s 10 sweeps/axis Measurement points as in Figure 12 CP2 Measurement points as in Figure 11 All contacts/specimens !No disturbance of the free connector to fixed connector electrical connections, between vibration test and contact resistance measurement" CP3 Test voltage 100 V d.c Method A Mated connectors Insulation resistance 3a 500 M Ω minimum CP4 Unmated connectors Visual examination 1a There shall be no defects that would impair normal operation BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 37 – 7.7.2.6 Test group DP Table 13 – Test group DP Test phase DP1 Test Title Electrical load and temperature IEC 60512 Test No 9b Measurement to be performed Severity or condition of test Title IEC 60512 Test No Requirements connectors 0,8 A connectors 500 h 70 ° C Recovery period h No current connectors DP2 Test voltage 100 V d.c Method A Mated connectors Insulation resistance 3a 500 M Ω minimum DP3 Contact/contact: Method A Mated connectors Voltage proof 4a 000 V d.c or a.c peak 500 V d.c or a.c peak All contacts to test panel: Method A Mated connectors DP4 Unmated connectors Visual examination 1a There shall be no defects that would impair normal operation DP5 Measurement points as in Figure 11 Contact resistance 2a 20 m Ω maximum change from initial All contacts/specimens DP6 Gauging Annex C DP7 Gauging continuity Annex A All samples tested shall pass all gauges and forces All contacts/specimen Contact disturbance 2e 10 μs maximum BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) 7.7.2.7 Test group EP ! Test phase EP1 – 38 – Table 14 – Test group EP Test Title IEC 60512 Test No Measurement to be performed Severity or condition of test IEC 60512 Test No Title Requirements Not applicable EP2 Not applicable EP3 Not applicable EP4 Not applicable EP5 Not applicable EP6 Not applicable EP7 Input to Output resistance Measurement points as defined in 6.4.5 Millivolt level method 2a Per 6.4.5 Millivolt level method 2a Per 6.4.6 All signal contacts EP8 Resistance unbalance Measurement points as defined in 6.4.6 All signal contacts All measurements to be performed on mated connectors 7.7.2.8 " Test Group FP Table 15 – Test group FP Test phase FP1 Test Title Surge test IEC 60512 Test No ITU-T K.20:2000 Measurement to be performed Severity or condition of test Title IEC 60512 Test No Requirements Mated connectors Test 2.1 and 2.2: Table 2a/2b, basic test level Acceptance criterion A per ITU-T K.44, Clause Tests 2.1.1a, 2.1.1b, 2.1.3, 2.2.1a, and 2.3.1a !(For test 2.3.1a, the load (resistor) value shall be ≥ 40 Ω; line a and line b shall be directly interconnected behind the connector, and a - terminal and b - terminal, respectively, directly connected to ground.)." Test 2.3: Acceptance criterion B per ITU-T K.44, Clause FP2 100 V ± 15 V d.c Method A Mated connectors Insulation resistance 3a 500 M Ω minimum FP3 Unmated connectors Visual examination 1a There shall be no defects that would impair normal operation – 39 – BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) Annex A (normative) Gauging continuity procedure A.1 Object The object of this test is to check whether, in worst-case conditions of the free connector, the electrical continuity is guaranteed A.2 Preparation of the specimens This test is carried out using a gauge according to Figure A.1 A.3 Test method The test specimen, suitably mounted with the gauge inserted to its fullest extent, is tested according to IEC 60512, Test 2e The test shall be repeated for each individual contact of the fixed connector For the test of the signal contacts, the gauge shall be fully inserted and then be moved upwards until it stops against the plastic wall of the fixed connector (see Figure A.2) For the test of the screen contact, the gauge shall be fully inserted and then be moved to both sides of the connector until it stops against the plastic wall of the fixed connectors This movement shall be repeated times During the movements, a forward force of 20 N minimum shall be applied as indicated by the arrow in Figure A.2 A.4 Final measurements The test requirements shall be satisfied if no discontinuity ≥ 10 μs is measured for each individual contact A.5 Description of the continuity gauge The gauge shall be made according to the following specification: Material: hardened and tempered steel, all sharp edges removed, hardness 650 HV 20 minimum Surface roughness: according to ISO 1302 Ra: 0,25 μm maximum The surface should be compatible with the contact finish of the connector under test BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 40 – Table A.1 – Dimensions for Figure A.1 Letter Maximum Minimum mm mm A1 11,59 11,57 B1 4,90 C1 0,8 0,6 D1 4,12 4,10 E1 15,0 F1 0,89 0,79 H1 0,47 0,45 J1 0,69 0,59 L1 6,72 6,70 N1 5,90 5,88 P1 4,7 4,3 R1 1,6 1,4 S1 1,46 1,44 T1 0,1 X1 0,6 Y1 0,4 5,0 Letter Maximum Minimum K1 30° 24° Gauging continuity process: Gauge shall be made as follows (see Figure A.1): Material: tool steel, hardened with suitable plating finish Surface roughness, according to ISO 1302 Ra: 0,25 μm maximum BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 41 – A1 C1 D1 E1 F1 H1 J1 Y1 K1 N1 P1 R1 X1 B1 L1 T1 S1 IEC 100/05 Key Sharp edge Insulation part Edge of insulation part may not extend beyond radius of steel part Dimension to edge of insulation part Figure A.1 – Gauge BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 42 – IEC Figure A.2 – Gauge insertion 101/05 – 43 – BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) Annex B (normative) Locking-device mechanical operation B.1 Object The object of this mechanical endurance test is to assess the operational limits of the locking device on the free connectors B.2 Preparation of the specimens The specimen shall be prepared and mounted so that the locking device is readily accessible for application of the test No other movement of the free connector shall be allowed B.3 Test method The specimen shall be subjected to mechanical operational endurance tests of the number of cycles, as specified in Table 11, group BP, test BP1 The speed of the operation of the applied force to the locking device shall not exceed 20 cycles per minute The specimen shall be operated in the normal manner, and the locking device shall be depressed until it contacts the body of the free connector Mechanical aids which simulate normal operations may be used, provided that they not introduce abnormal stresses B.4 Final measurements After the specified number of operations, the specimens shall be examined per IEC 60512, Test 1a and show no visual indication of fatigue or stress cracking of the locking device BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 44 – Annex C (normative) Gauge requirements C.1 Fixed connectors The “Go” gauge specified in 5.1 shall be capable of being inserted and removed with a force of 8,9 N maximum The “No-go” gauges specified in 5.1 shall not be capable of entering the fixed connector more than 1,78 mm with an 8,9 N insertion force C.2 Free connectors The connector shall be capable of insertion and latching into the “Go” gauge specified in 5.2 with a 20 N or less insertion force with the latch bar depressed After insertion and latching, the connector shall be capable of removal, with the latch depressed, with a removal force of 20 N or less applied at an advantageous angle The free connectors shall not be capable of entering the “No-go” gauges specified in 5.2 more than 1,78 mm with an 8,9 N insertion force BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) – 45 – Annex D (normative) Keystone connector information D.1 Fixed connector, female contacts Keystone type − Type A, variant 03 in the previous edition of this standard This annex contains the dimensions that define the panel mounting features on the connector and panel that were referenced in IEC 60603-7 Ed as the Type A, variant 03 connector Only the dimensions pertaining to the mounting features for what has come to be called a “Keystone connector” have been retained The connector dimensions are shown in Figure D.1 and the panel dimensions are given in Figure D.2 P1 C1 L1 A1 J1 B1 M1 K1 IEC 1018/08 Figure D.1 – Keystone connector Table D.1 – Dimensions for Figure D.1 Letter Maximum Minimum mm mm A1 16,51 16,00 B1 22,43 22,07 C1 12,65 12,34 J1 1,65 1,17 K1 9,78 9,53 L1 1,75 1,55 M1 5,46 5,16 P1 14,61 14,35 BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) D.2 – 46 – Mounting dimensions for type A, Keystone type variant 03 A a3 A I3 c3 Section A-A IEC 1019/08 Figure D.2 – Panel drawing Table D.2 – Dimensions Letter Maximum Minimum mm mm a3 19,61 19,30 c3 15,04 14,78 l3 1,54 1,22 – 47 – BS EN 60603-7:2009+A1:2011 EN 60603-7:2009+A1:2011 (E) Bibliography IEC 60603-7-2, Connectors for electronic equipment – Part 7-2: Detail specification for 8-way, unshielded, free and fixed connectors, for data transmissions with frequencies up to 100 MHz IEC 60603-7-3, Connectors for electronic equipment – Part 7-3: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 100 MHz IEC 60603-7-4, Connectors for electronic equipment – Part 7-4: Detail specification for 8-way, unshielded, free and fixed connectors, for data transmissions with frequencies up to 250 MHz IEC 60603-7-5, Connectors for electronic equipment – Part 7-5: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 250 MHz IEC 60603-7-7, Connectors for electronic equipment – Part 7-7: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 600 MHz IEC 60603-7-41, Connectors for electronic equipment – Part 7-41: Detail specification for 8-way, unshielded, free and fixed connectors, for data transmissions with frequencies up to 500 MHz IEC 60603-7-51, Connectors for electronic equipment – Part 7-51: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 500 MHz IEC 60603-7-71, Connectors for electronic equipment – Part 7-71: Detail specification for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to 000 MHz IEC 61169-16, Radio-frequency connectors – Part 16: Sectional specification – RF coaxial connectors with inner diameter of outer conductor mm (0,276 in) with screw coupling – Characteristic impedance 50 ohms (75 ohms) (Type N) ITU-T Recommendation O.9, Measuring arrangements to assess the degree of unbalance about earth _ ——————— To be published To be published To be published This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT 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