cispr 25_2008_en.pdf

CISPR/D/321/CD COMMITTEE DRAFT (CD) IEC/TC or SC: CISPR/D Project number CISPR 25 Ed. 3.0 Title of TC/SC: Electromagnetic disturbances related to electric/electronic equipment on vehicles and internal combustion engine powered devices Date of circulation 2006-05-05 Closing date for comments 2006-08-11 Also of interest to the following committees Supersedes document CISPR/D/317/CD and CISPR/D/320/CC Functions concerned: Safety EMC Environment Quality assurance Secretary: Germany THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title: CISPR 25 Ed.3: Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers (Titre) : Introductory note CISPR/D Working group 2 decided at the last meeting in Troy to launch a third CD, since the discussions show significant changes. Copyright © 2006 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. CISPR/D/321/CD - 2 - CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .8 3 Definitions 9 4 Requirements common to vehicle and component/module emissions measurement12 4.1 General test requirements and test plan 12 4.1.1 Categories of disturbance sources (as applied in the test plan) .12 4.1.2 Test plan .12 4.1.3 Determination of conformance of EUT with limits.12 4.1.4 Operating conditions15 4.1.5 Test report.15 4.2 Shielded enclosure15 4.3 Absorber-lined shielded enclosure (ALSE).15 4.3.1 Reflection characteristics.15 4.3.2 Size.15 4.3.3 Objects in ALSE 15 4.4 Measuring instrument16 4.4.1 Spectrum analyser parameters 16 4.4.2 Scanning receiver parameters .17 4.5 Power supply.18 5 Measurement of emissions received by an antenna on the same vehicle19 5.1 Antenna measuring system .19 5.1.1 Type of antenna 19 5.1.2 Measuring system requirements 19 5.2 Method of measurement20 5.3 Examples of limits for vehicle radiated disturbances22 6 Measurement of components and modules.24 6.1 Test equipment .24 6.1.1 Ground plane.24 6.1.2 Power supply and AN 24 6.1.3 Signal/control line network.25 6.2 Conducted emissions from components/modules – Voltage method 26 6.2.1 General .26 6.2.2 Ground plane arrangement26 6.2.3 Limits for conducted disturbances from components/modules – Voltage method .32 6.3 Conducted emissions from components/modules – current probe method .33 6.3.1 Test set-up 33 6.3.2 Test procedure 33 6.3.3 Limits for conducted disturbances from components/modules – Current probe method35 6.4 Radiated emissions from components/modules - ALSE method.36 6.4.1 General .36 CISPR/D/321/CD - 3 - 6.4.2 Test set-up 36 6.4.3 Test procedure 38 6.4.4 Limits for radiated disturbances from components/modules – ALSE method 44 6.5 Radiated emissions from components/modules – TEM cell method .49 6.5.1 General .49 6.5.2 Test set-up 50 6.5.3 Test procedure 52 6.5.4 Limits for radiated disturbances from components/modules – TEM cell method54 6.5.5 Disturbances radiated from integrated circuits .54 6.6 Radiated emissions from components/modules – Stripline method 54 Annex A (informative) Flow chart for checking the applicability of CISPR 2555 Annex B (normative) Antenna matching unit – Vehicle test 56 Annex C (informative) Sheath-current suppressor58 Annex D (informative) Guidance for the determination of the noise floor of active vehicle antennas in the AM and FM Range.59 Annex E (normative) Artificial network schematic.62 Annex F (informative) TEM cell dimensions .64 Annex G (informative) Radiated emissions from components/modules – Stripline method.66 Annex H (informative) Interference to mobile radio communication in the presence of impulsive noise – Methods of judging degradation74 Annex I (informative) Items Under Consideration .78 CISPR/D/321/CD - 4 - INTERNATIONAL ELECTROTECHNICAL COMMISSION INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE ____________ VEHICLES, BOATS AND INTERNAL COMBUSTION ENGINES – RADIO DISTURBANCE CHARACTERISTICS – LIMITS AND METHODS OF MEASUREMENT FOR THE PROTECTION OF ON-BOARD RECEIVERS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes Internation。