1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11452-9:2012Road vehicles Componenttest methods for electricaldisturbances from narrowbandradiated electromagneticenergyPart 9: Portable transmittersBS ISO 11452-9:2012 BR
2、ITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 11452-9:2012.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Electrical and electronic equipment.A list of organizations represented on this committee can beobtained on request to
3、 its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 58062 8ICS 33.100.20; 43.040.10Compliance with a Briti
4、sh Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedBS ISO 11452-9:2012 ISO 2012Road vehicles Component test methods for elec
5、trical disturbances from narrowband radiated electromagnetic energy Part 9: Portable transmittersVhicules routiers Mthodes dessai dun quipement soumis des perturbations lectriques par rayonnement dnergie lectromagntique en bande troite Partie 9: metteurs portablesINTERNATIONAL STANDARDISO11452-9Firs
6、t edition2012-05-15Reference numberISO 11452-9:2012(E)BS ISO 11452-9:2012ISO 11452-9:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elec
7、tronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWe
8、b www.iso.orgPublished in SwitzerlandBS ISO 11452-9:2012ISO 11452-9:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Test conditions . 15 Test location 26 Test instrumentation . 26.1 General . 26.2 Commercia
9、l portable transmitters 26.3 Simulated portable transmitters 26.4 Stimulation and monitoring of the DUT . 37 Test set-up . 37.1 Ground plane 37.2 Power supply and artificial networks . 37.3 Location of the DUT 47.4 Location of the test harness . 47.5 Location of the load simulator . 48 Tests 68.1 Ge
10、neral . 68.2 Test plan . 68.3 Test methods 78.4 Test report .10Annex A (informative) Typical characteristics of portable transmitters 11Annex B (informative) Examples of simulated portable transmitter antennas 13Annex C (informative) Example of test severity levels associated with function performan
11、ce status classification 45Annex D (informative) Remote/local grounding .46BS ISO 11452-9:2012ISO 11452-9:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards
12、is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take pa
13、rt in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to pr
14、epare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that
15、some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 11452-9 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment.ISO 11452 consis
16、ts of the following parts, under the general title Road vehicles Component test methods for electrical disturbances from narrowband radiated electromagnetic energy: Part 1: General principles and terminology Part 2: Absorber-lined shielded enclosure Part 3: Transverse electromagnetic mode (TEM) cell
17、 Part 4: Harness excitation methods Part 5: Stripline Part 7: Direct radio frequency (RF) power injection Part 8: Immunity to magnetic fields Part 9: Portable transmitters Part 10: Immunity to conducted disturbances in the extended audio frequency range Part 11: Reverberation chamberiv ISO 2012 All
18、rights reservedBS ISO 11452-9:2012ISO 11452-9:2012(E)IntroductionImmunity measurements of complete road vehicles can generally only be carried out by the vehicle manufacturer, owing to, for example, high costs of absorber-lined shielded enclosures, the desire to preserve the secrecy of prototypes or
19、 a large number of different vehicle models.For research, development and quality control, a laboratory measuring method can be used by both vehicle manufacturers and equipment suppliers to test electronic components. ISO 2012 All rights reserved vBS ISO 11452-9:2012BS ISO 11452-9:2012Road vehicles
20、Component test methods for electrical disturbances from narrowband radiated electromagnetic energy Part 9: Portable transmitters1 ScopeThis part of ISO 11452 specifies test methods and procedures for testing electromagnetic immunity to portable transmitters of electronic components for passenger car
21、s and commercial vehicles, regardless of the propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The device under test (DUT), together with the wiring harness (prototype or standard test harness), is subjected to an electromagnetic disturbance generated by portable transmi
22、tters inside an absorber-lined shielded enclosure, with peripheral devices either inside or outside the enclosure. The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields.2 Normative referencesThe following referenced documents are indispensable for th
23、e 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.ISO 11452-1, Road vehicles Component test methods for electrical disturbances from narrowband radiated electr
24、omagnetic energy Part 1: General principles and terminologyGuidelines for Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz). International Commission on Non-Ionizing Radiation Protection (ICNIRP)3 Terms and definitionsFor the purposes of this document,
25、the terms and definitions given in ISO 11452-1 apply.4 Test conditionsThe applicable frequency range of the test method is 26 MHz to 5,85 GHz.The user of this International Standard shall specify the test severity level or levels over the frequency bands. The test severity level shall take into acco
26、unt typical portable transmitter characteristics (frequency bands, power level and modulation), given in Annex A, and the characteristics of the antenna(s) used for this test.NOTE Users of this International Standard are advised that Annex A is for information only and cannot be considered as an exh
27、austive description of various portable transmitters available in all countries.Standard test conditions are given in ISO 11452-1 for the following: test temperature; supply voltage;INTERNATIONAL STANDARD ISO 11452-9:2012(E) ISO 2012 All rights reserved 1BS ISO 11452-9:2012ISO 11452-9:2012(E) dwell
28、time; test signal quality.5 Test locationThe purpose of such an enclosure is to create an isolated electromagnetic compatibility test facility which simulates open field testing. Basically, an absorber-lined shielded enclosure consists of a shielded room with absorbing material on its internal refle
29、ctive surfaces, optionally excluding the floor. The design objective is to attenuate the reflected energy in the test area by at least 10 dB compared with the direct energy.6 Test instrumentation6.1 GeneralThe field-generating device can be commercial portable transmitters with integral antennas, or
30、 simulated portable transmitters, with an antenna used as described in 6.3.4 and an amplifier.To reduce test error, the operation of the DUT is usually monitored by fibre-optic couplers.Test personnel shall be protected in accordance with ICNIRP Guidelines.NOTE National or other regulations can appl
31、y.6.2 Commercial portable transmittersCommercial portable transmitters having an integral antenna are a convenient and readily available field-generating device.6.3 Simulated portable transmitters6.3.1 GeneralSimulated portable transmitters consist of radio frequency (RF) signal generating equipment
32、, and RF power monitoring equipment and antennas.6.3.2 RF signal generating equipmentSignal sources with internal or external modulation capability.Power amplifier(s): multiple RF amplifiers may be required to cover the range of test frequencies.6.3.3 RF power monitoring equipmentAn in-line power me
33、ter is required when using simulated portable transmitters for measuring power to the antenna. Both forward and reverse power shall be measured and recorded.6.3.4 AntennasUnless otherwise specified, the simulated portable transmitter antenna characteristics shall be a passive antenna as detailed in
34、B.2. Examples of other antennas which may be used are presented in Annex B.2 ISO 2012 All rights reservedBS ISO 11452-9:2012ISO 11452-9:2012(E)All antennas should be tuned for a minimum voltage standing wave ratio (VSWR) of typically less than 4:1 unless otherwise specified in the test plan. The res
35、ulting VSWR has to be compatible with the design of the RF source. As a minimum, the VSWR value shall be recorded at the lower and upper band edges and at middle frequency.6.4 Stimulation and monitoring of the DUTThe DUT shall be operated in accordance with the test plan by actuators which have a mi
36、nimum effect on the electromagnetic characteristics. EXAMPLE Plastic blocks on the push-buttons, pneumatic actuators with plastic tubes.Connections to equipment monitoring electromagnetic interference reactions of the DUT may be accomplished by using fibre-optics or high-resistance leads. Other type
37、s of leads may be used but require extreme care to minimize interactions. The orientation, length and location of such leads shall be carefully documented to ensure repeatability of test results.CAUTION Any electrical connection of monitoring equipment to the DUT could cause malfunctions of the DUT.
38、 Extreme care shall be taken to avoid such an effect.7 Test set-up7.1 Ground plane7.1.1 GeneralThe ground plane shall be made of 0,5 mm thick (minimum) copper, brass or galvanized steel.The minimum width of the ground plane shall be 1 000 mm. The minimum length of the ground plane shall be 2 000 mm,
39、 or the underneath of the entire equipment plus 200 mm, whichever is larger.The height of the ground plane (test bench) shall be (900 100) mm above the floor.The ground plane shall be bonded to the shielded enclosure such that the DC resistance does not exceed 2,5 m. In addition, the bond straps sha
40、ll be placed no greater than 0,3 m apart.7.2 Power supply and artificial networksEach DUT power supply lead shall be connected to the power supply through an artificial network (AN).Power supply is assumed to be negative ground. If the DUT utilizes positive ground then the test set-up shown in Figur
41、es D.1 and D.2 need to be adapted accordingly. Power shall be applied to the DUT via a 5 H/50 AN. Whether two ANs or only one is required depends on the intended DUT installation in the vehicle: for remotely grounded DUTs (vehicle power return line longer than 200 mm), two ANs are required one for t
42、he positive supply line and the other for the power return line (see Annex D); for locally grounded DUTs (vehicle power return line 200 mm or shorter), only one AN is required, for the positive supply (see Annex D).The AN(s) shall be mounted directly on the ground plane. AN cases shall be bonded to
43、the ground plane.The power supply return shall be connected to the ground plane, between the power supply and the AN(s).The measuring port of each AN shall be terminated with a 50 load. ISO 2012 All rights reserved 3BS ISO 11452-9:2012ISO 11452-9:2012(E)7.3 Location of the DUTThe DUT shall be placed
44、 on non-conductive material of low relative permittivity (dielectric constant) (r 1,4) at (50 5) mm above the ground plane.The case of the DUT shall not be grounded to the ground plane unless it is intended to simulate the actual vehicle configuration.The face of the DUT shall be located at least 10
45、0 mm from the edge of the ground plane.7.4 Location of the test harnessThe total length of the test harness between the DUT and the load simulator (or RF boundary) shall be 17000300+mm unless otherwise specified in the test plan. The wiring type is defined by the actual system application and requir
46、ement.The test harness shall be placed on non-conductive material of low relative permittivity (dielectric constant) (r 1,4) at (50 5) mm above the ground plane.The test harness shall be located at least 200 mm from the edge of the ground plane.7.5 Location of the load simulatorThe load simulator sh
47、all be placed directly on the ground plane. If the load simulator has a metallic case, this case shall be bonded to the ground plane.The load simulator may be located adjacent to the ground plane, with the case of the load simulator bonded to the ground plane, or outside the test chamber, provided t
48、he test harness from the DUT passes through an RF boundary bonded to the ground plane.When the load simulator is located on the ground plane, the DC power supply lines of the load simulator shall be connected through the AN(s).4 ISO 2012 All rights reservedBS ISO 11452-9:2012ISO 11452-9:2012(E)Dimen
49、sions in millimetresUpper view ISO 2012 All rights reserved 5BS ISO 11452-9:2012ISO 11452-9:2012(E)Key1 DUT (grounded locally if required in test plan) 10 high-quality double-shielded coaxial cable (50 )2 test harness 11 bulkhead connector3 load simulator (placement and ground connection according to 7.5)12 RF signal generator, amplifier, directional coupler and power meter for the simulated portable transmitter4 power supply (location optional) 13 RF absorber material5 artificial
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