1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22561-2 SANS 225:2008 Edition 2, CISPR tech. corr. 1 CISPR 25:2008 Edition 3, tech. corr. 1SOUTH AFRICAN NATIONAL STANDARD Vehicles, boats
4、 and internal combustion engines Radio disturbance characteristics Limits and methods of measurement for the protection of on-board receivers This national standard is the identical implementation of CISPR 25:2008 and CISPR technical corrigendum 1, and is adopted with the permission of the Internati
5、onal Electrotechnical Commission (International Special Committee on Radio Interference). Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by appro
6、ved subscription and freemailing clients of the SABS.SANS 225:2008 Edition 2, CISPR tech. corr. 1 CISPR 25:2008 Edition 3, tech. corr. 1 Table of changes Change No. Date Scope CISPR tech. corr. 1 2009 Corrected to replace the existing figure 1 and notes by a new figure 1 and notes, and in figure 4 t
7、o replace “Level dB (V/m)“ by “Level dB (V)“. National foreword This South African standard was approved by National Committee SABS TC 73, Electromagnetic compatibility, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS docum
8、ent was published in March 2009. This SANS document supersedes SANS 225:2008 (edition 2). This standard may only be used and printed by approved subscription and freemailing clients of the SABS.January 2009 CISPR 25 (Third edition 2008) Vehicles, boats and internal combustion engines Radio disturban
9、ce characteristics Limits and methods of measurement for the protection of on-board receivers CORRIGENDUM 1 Figure 1 Method of determination of conformance for all frequency bands Replace the existing figure and notes by the following: Start (1) Are the peak data below the average limit? Measurement
10、 with peak detector Measurement with average detector (3) Fail Pass Fail Average and peak Yes (2) Yes (2) No No No No No No No Yes Yes Yes Yes Yes Average and quasi-peak Are the peak data below the peak limit? Are the average data below the average limit? Measurement with average detector (3) Are th
11、e average data below the average limit? Measurement with quasi-peak detector (3) Are the quasi-peak data below the quasi-peak limit? Are the peak data below the quasi-peak limit? Are the peak data below the average limit? Measurement with peak detector Applicable limits : average and peak or average
12、 and quasi-peak? IEC 051/09 SANS 225:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.January 2009 NOTE 1 The conformance should normally be obtained by compliance to both average and peak limits or both average and quasi-peak limits unless
13、the test plan defines that conformance can be obtained by compliance to the single appropriate limit) (depending on the case, peak, or average, or quasi-peak). NOTE 2 Because measurement with peak detector is always higher or equal to measurement with average detector and applicable peak limit is al
14、ways higher or equal to applicable average limit, this single detector measurement can lead to a simplified and quicker conformance process. NOTE 3 This flow-chart is applicable for each individual frequency, e.g. only frequencies that are above the applicable limit need be remeasured with average o
15、r quasi-peak detector. Figure 4 Average limit for radiated disturbances from vehicles GPS band 1 567,42 to 1 583,42 MHz In the existing figure, replace “Level dB (V/m)” by: Level dB(V) 10 0 10 20 30 40 50 60 Frequency (MHz) Level dB (V) 1 567,42 1 568,42 1 569,42 1 570,42 1 571,42 1 572,42 1 573,42
16、1 574,42 1 575,42 1 576,42 1 577,42 1 578,42 1 579,42 1 580,42 1 581,42 1 582,42 1 583,42 IEC 052/09 SANS 225:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. CISPR 25 Edition 3.0 2008-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Vehicles
17、, boats and internal combustion engines Radio disturbance characteristics Limits and methods of measurement for the protection of on-board receivers Vhicules, bateaux et moteurs combustion interne Caractristiques des perturbations radiolectriques Limites et mthodes de mesure pour la protection des r
18、cepteurs embarqus INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XC ICS 33.100.10; 33.100.20 PRICE CODE CODE PRIX ISBN 2-8318-9664-9 INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE COMIT INTERNATIONAL SPCIAL DES PERTURBATIONS RADIOLECTRIQUES SANS 225:2008T
19、his standard may only be used and printed by approved subscription and freemailing clients of the SABS. 2 CISPR 25 IEC:2008 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references .9 3 Terms and definitions10 4 Requirements common to vehicle and component/module emissions measurement12 4
20、.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 .13 4.1.3 Determination of conformance of EUT with limits.13 4.1.4 Operating conditions15 4.1.5 Test report.15 4.2 Shielded enclosure15 4.3 Absorber-lined shielded
21、enclosure (ALSE).15 4.3.1 Reflection characteristics.15 4.3.2 Size.16 4.3.3 Objects in ALSE 16 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 Anten
22、na 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 disturbances23 6 Measurement of components and modules.25 6.1 Test equipment .25 6.1.1 Ground plane.25 6.1.2 Power supply and AN 25 6.1.3 Lo
23、ad Simulator 25 6.1.4 Signal/control line filters 26 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 .33 6.3 Conducted emissions from components/modules
24、 current probe method .34 6.3.1 Test set-up 34 6.3.2 Test procedure 35 6.3.3 Limits for conducted disturbances from components/modules Current probe method37 6.4 Radiated emissions from components/modules - ALSE method.38 6.4.1 General .38 6.4.2 Test set-up 39 SANS 225:2008This standard may only be
25、used and printed by approved subscription and freemailing clients of the SABS.CISPR 25 IEC:2008 3 6.4.3 Test procedure 41 6.4.4 Limits for radiated disturbances from components/modules ALSE method 47 6.5 Radiated emissions from components/modules TEM cell method .49 6.5.1 General .49 6.5.2 Test set-
26、up 51 6.5.3 Test procedure 52 6.5.4 Limits for radiated disturbances from components/modules TEM cell method54 6.6 Radiated emissions from components/modules Stripline method 56 Annex A (informative) Flow chart for checking the applicability of CISPR 2557 Annex B (normative) Antenna matching unit Ve
27、hicle test 58 Annex C (informative) Sheath-current suppressor60 Annex D (informative) Guidance for the determination of the noise floor of active vehicle antennas in the AM and FM Range .61 Annex E (normative) Artificial network .64 Annex F (informative) TEM cell dimensions .66 Annex G (informative)
28、 Radiated emissions from components/modules Stripline method .68 Annex H (informative) Interference to mobile radio communication in the presence of impulsive noise Methods of judging degradation 76 Annex I (informative) Items Under Consideration .80 Bibliography81 Figure 1 Method of determination o
29、f conformance for all frequency bands .14 Figure 2 Example of gain curve20 Figure 3 Vehicle-radiated emissions Example for test layout (end view with monopole antenna).22 Figure 4 Average limit for radiated disturbances from vehicles GPS band 1 567,42 to 1 583,42 MHz .24 Figure 5 Example for the req
30、uired minimum attenuation of the signal / control line filters 26 Figure 6 Conducted emissions EUT with power return line remotely grounded29 Figure 7 Conducted emissions EUT with power return line locally grounded30 Figure 8 Conducted emissions Test layout for alternators and generators.31 Figure 9
31、 Conducted emissions Test layout for ignition system components.32 Figure 10 Conducted emissions Example of test layout for current probe measurements 36 Figure 11 Test harness bending requirements40 Figure 12 Example of test set-up rod antenna.43 Figure 13 Example of test set-up biconical antenna 4
32、4 Figure 14 Example of test set-up log-periodic antenna45 Figure 15 Example of test set-up above 1 GHz .46 Figure 16 Example of average limit for radiated disturbances from components GPS band 1 567,42 to 1 583,42 MHz Class 549 Figure 17 TEM cell (example) 50 SANS 225:2008This standard may only be u
33、sed and printed by approved subscription and freemailing clients of the SABS. 4 CISPR 25 IEC:2008 Figure 18 Example of arrangement of leads in the TEM cell and to the connector panel 51 Figure 19 Example of the arrangement of the connectors, the lead frame and the dielectric support 52 Figure 20 Exa
34、mple of the TEM cell method test layout.53 Figure B.1 Verification set-up59 Figure C.1 Attenuation vs. frequency .60 Figure D.1 Vehicle test set up for equipment noise measurement in the AM/FM range.62 Figure D.2 Vehicle test set up for antenna noise measurement in the AM/FM range.63 Figure E.1 Char
35、acteristics of the AN impedance 64 Figure E.2 Example of 5 H AN schematic.65 Figure F.1 TEM cell .66 Figure G.1 Example of a basic stripline test setup in a shielded enclosure.70 Figure G.2 Example for a 50 stripline .74 Figure G.3 Example for a 90 stripline .75 Table 1 Spectrum analyser parameters1
36、7 Table 2 Scanning receiver parameters.18 Table 3 Antenna types .19 Table 4 Example for limits of disturbance Complete vehicle 23 Table 5 Examples of quasi-peak or peak limits for conducted disturbances Voltage Method .33 Table 6 Examples of average limits for conducted disturbances Voltage Method.3
37、4 Table 7 Examples of quasi-peak and peak limits for conducted disturbances - control/signal lines Current probe method37 Table 8 Examples of average limits for conducted disturbances - control/signal lines Current probe method38 Table 9 Examples of quasi-peak or peak limits for radiated disturbance
38、s ALSE 47 Table 10 Examples of average limits for radiated disturbances ALSE48 Table 11 Examples of quasi-peak or peak limits for radiated disturbances TEM cell55 Table 12 Examples of average limits for radiated disturbances TEM Cell 56 Table F.1 Dimensions for TEM cells.67 Table G.1 Examples of qua
39、si-peak or peak limits for radiated disturbances Stripline 71 Table G.2 Examples of average limits for radiated disturbances Stripline72 SANS 225:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.CISPR 25 IEC:2008 5 INTERNATIONAL ELECTROTECHN
40、ICAL 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 wo
41、rldwide 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
42、 activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the su
43、bject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions
44、determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National C
45、ommittees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in w
46、hich they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publi
47、cation and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure
48、that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any
49、nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct applic
