Regulation No. 10-02

Name:Regulation No. 10-02
Description:Electromagnetic Compatibility.
Official Title:Uniform Provisions Concerning the Approval of: Vehicles with Regard to Electromagnetic Compatibility.
Country:ECE - United Nations
Date of Issue:1997-09-03
Amendment Level:02 Series, Supplement 2
Number of Pages:84
Vehicle Types:Bus, Car, Component, Heavy Truck, Light Truck, Motorcycle, Trailer
Subject Categories:Prior Versions
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Keywords:

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Text Extract:

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E/ECE/324 )
E/ECE/TRANS/505 ) Add.9/Rev.2/Amend.2
October 1, 2004
STATUS OF UNITED NATIONS REGULATION
ECE 10
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
VEHICLES WITH REGARD TO ELECTROMAGNETIC COMPATIBILITY
Incorporating:
02 series of amendments
Date of Entry into Force: 03.09.97
Corr. 1 to the 02 series of amendments
Date of Entry into Force: 11.03.98
Supplement 1 to the 02 series of amendments
Date of Entry into Force: 04.02.99
Corr. 2 to the 02 series of amendments
Date of Entry into Force: 10.11.99
Supplement 2 to the 02 series of amendments
Date of Entry into Force: 12.08.04

REGULATION
1. Scope
2. Definitions
REGULATION NO. 10
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO ELECTROMAGNETIC COMPATIBILITY
3. Application for approval
4. Approval
5. Markings
6. Specifications
CONTENTS
7. Amendment or extension of a vehicle type approval following electrical/electronic sub-assembly
(ESA) addition or substitution
8. Conformity of production
9. Penalties for non-conformity of production
10. Production definitely discontinued
11. Modification and extension of type approval of a vehicle or ESA
12. Transitional provisions
13. Names and addresses of technical services conducting approval tests, and of administrative
departments

REGULATION NO. 10
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF VEHICLES
WITH REGARD TO ELECTROMAGNETIC COMPATIBILITY
1. SCOPE
This Regulation applies to the electromagnetic compatibility of L, M, N and O categories of
vehicles (hereinafter referred to as vehicle(s)) as supplied by the vehicle manufacturer and to
components or separate electrical/electronic technical units intended for fitment in vehicles.
2. DEFINITIONS
For the purposes of this Regulation:
2.1. "Electromagnetic compatibility" means the ability of a vehicle or component(s) or separate
electrical/electronic technical unit(s) to function satisfactorily in an electromagnetic
environment without introducing intolerable electromagnetic disturbances to anything in that
environment.
2.2. "Electromagnetic disturbances" means any electromagnetic phenomenon which may
degrade the performance of a vehicle or component(s) or separate electrical/electronic
technical unit(s). An electromagnetic disturbance may be electromagnetic noise or a change
in the propagation medium itself.
2.3. "Electromagnetic immunity" means the ability of a vehicle of component(s) or separate
technical unit(s) to perform without degradation of performance in the presence of specified
electromagnetic disturbances.
2.4. "Electromagnetic environment" means the totality of electromagnetic phenomena existing
at a given location.
2.5. "Reference limit" means the nominal level to which the type approval and conformity of
production limit values are referenced.
2.6. "Reference antenna" for the frequency range 20 to 80 MHz: means a shortened balanced
resonant dipole at 80 MHz, and for the frequency range above 80 MHz: means a balanced
half-wave resonant dipole tuned to the measurement frequency.
2.7. "Broadband electromagnetic disturbances" means electromagnetic disturbances which
have a bandwidth greater than the passband of the receiver used.
2.8. "Narrowband electromagnetic disturbances" means electromagnetic disturbances which
have a bandwidth less than the passband of the receiver used.
2.9. "Electrical/electronic system" means an electrical and or electronic device or set of devices
together with any associated electrical wiring which forms part of a vehicle but which is not
intended to be type approved separately from the vehicle. (The vehicle is type approved as a
complete unit, See Paragraph 3.1 of this Regulation.)

3.1.6. The manufacturer may supplement the application with a report on tests which have been
carried out. Any such data provided may be used by the approval authority for the purpose of
drawing up the communication form for type-approval.
3.1.7. If the technical service responsible for the type approval test carries out the test itself, then a
vehicle representative of the type to be approved according to Paragraph 3.1.4. shall be
provided.
3.2. ESA Type Approval
3.2.1. The application for approval of a type of ESA with regard to its electromagnetic compatibility
shall be submitted by the vehicle manufacturer or by the manufacturer of the ESA.
3.2.2. A model of information document is shown in Annex 2B.
3.2.3. The manufacturer may supplement the application with a report on tests which have been
carried out. Any such data provided may be used by the approval authority for the purpose of
drawing up the communication form for type-approval.
3.2.4. If the technical service responsible for the type approval test carries out the test itself, then a
sample of the ESA system representative of the type to be approved shall be provided, if
necessary, after discussion with the manufacturer on, e.g., possible variations in the layout,
number of components, number of sensors. If the technical service deems it necessary, it
may select a further sample.
3.2.5. The sample(s) must be clearly and indelibly marked with the manufacturer's trade name or
mark and the type designation.
3.2.6. Where applicable, any restrictions on use should be identified. Any such restrictions should
be included in Annexes 2B and/or 3B.
4. APPROVAL
4.1. Type Approval Procedures
4.1.1. Type Approval of a Vehicle
The following alternative procedures for vehicle type approval may be used at the discretion
of the vehicle manufacturer.
4.1.1.1. Approval of a Vehicle Installation
A vehicle installation may be type approved directly by following the provisions laid down in
Paragraph 6 of this Regulation. If this procedure is chosen by a vehicle manufacturer, no
separate testing of electrical/electronic systems or ESAs is required.
4.1.1.2. Approval of Vehicle Type by Testing of Individual ESAs
A vehicle manufacturer may obtain approval for the vehicle by demonstrating to the approval
authority that all the relevant (See Paragraph 3.1.3. of this Regulation) electrical/electronic
systems or ESAs have been approved in accordance with this Regulation and have been
installed in accordance with any conditions attached thereto.

5.2.2. Sub-assembly
An approval mark described in Paragraph 5.3. below shall be affixed to every ESA
conforming to a type approved under this Regulation.
No marking is required for electrical/electronic systems built into vehicles which are approved
as units.
5.3. An international approval mark must be affixed, in a conspicuous and easily accessible place
specified on the approval communication form, on each vehicle conforming to the type
approved under this Regulation. This mark shall comprise:
5.3.1. A circle containing the letter "E", followed by the distinguishing number of the country granting
the approval.
5.3.2. The number of this Regulation, followed by the letter "R", a dash and the approval number to
the right of the circle specified in Paragraph 5.3;1.
5.4. An example of the type-approval mark is shown in Annex 1 to this Regulation.
5.5. Markings on ESAs in conformity with Paragraph 5.3. above need not be visible when the ESA
is installed in the vehicle.
6. SPECIFICATIONS
6.1. General Specifications
6.1.1. A vehicle (and its electrical/electronic system(s) or ESAs) shall be so designed and fitted as to
enable the vehicle, in normal conditions of use, to conform to the requirements of this
Regulation.
6.2. Specifications Concerning Broadband Electromagnetic Disturbances Generated by
Vehicles Fitted with Spark Ignition.
6.2.1. Method of Measurement
The electromagnetic disturbances generated by the vehicle representative of its type shall be
measured using the method described in Annex 4 at either of the defined antenna
distances. The choice shall be made by the vehicle manufacturer.

57
6.4. Specifications Concerning Immunity of Vehicles to Electromagnetic Radiation.
6.4.1. Method of Testing
The immunity to electromagnetic radiation of the vehicle presented for approval shall be
tested by the method described in Annex 6.
6.4.2. Vehicle Immunity Reference Limits.
6.4.2.1. If tests are made using the method described in Annex 6, the field strength reference limit
shall be 24 Volts/m r.m.s. in over 90 % of the 20 MHz to 1,000 MHz frequency band and
20 Volts/m r.m.s. over the whole 20 MHz to 1,000 MHz frequency band.
6.4.2.2. The vehicle representative of its type shall be considered as conforming to immunity
requirements if, during the tests performed in accordance with Annex 6, and subjected to a
field strength, expressed in Volts/m, of 25% above the reference level, no abnormal change in
the speed of the driving wheels of the vehicle, no degradation of performance which would
cause confusion to other road users, and no degradation in the driver's direct control of the
vehicle can be observed by the driver or other road users.
6.4.2.3. The driver's direct control of the vehicle is exercised by means of, for example, steering,
braking, or engine speed control.
6.5. Specifications Concerning Broadband Electromagnetic Disturbances Generated by
ESAs.
6.5.1. Method of Measurement
The electromagnetic radiation generated by the ESA representative of its type shall be
measured by the method described in Annex 7.
6.5.2. ESA Broadband Reference Limit
6.5.2.1. If measurements are made using the method described in Annex 7, the radiation reference
limit shall decrease logarithmically (linearly) from 64 to 54 dB micro-Volts/m
(1,600-500 micro-Volts/m) in the 30-75 MHz frequency band, and increase logarithmically
(linearly) from 54 to 65 dB micro-Volts/m (500-1,800 micro-Volts/m) in the 75-400 MHz band,
(as shown in Appendix 5 to this Regulation) and remain constant at 65 dB micro-Volts/m
(1,800 micro-Volts/m) in the 400-1,000 MHz frequency band.
6.5.2.2. On the ESA representative of its type, the measured values, expressed in dB micro-Volts/m,
shall be at least 2.0 dB (20 %) below the reference limit.
6.6. Specifications Concerning Narrowband Electromagnetic Disturbances Generated by
ESAs.
6.6.1. Method of Measurement
The electromagnetic disturbances generated by the ESA representative of its type shall be
measured by the method described in Annex 8.

6.8.5. Conducted Transients
Since during normal driving, no external electrical connections are made to vehicles, no
conducted transients are generated in relation to the external environment. The responsibility
of ensuring that equipment can tolerate the conducted transients within a vehicle, e.g. due to
load switching and interaction between systems, lies with the manufacturer. No type approval
test for conducted transients is deemed necessary.
7. AMENDMENT OR EXTENSION OF A VEHICLE TYPE APPROVAL FOLLOWING ESA
ADDITION OR SUBSTITUTION
7.1. Where a vehicle manufacturer has obtained type approval for a vehicle installation and
wishes to fit an additional or substitutional electrical/electronic system or ESA which has
already received approval under this Regulation, and which will be installed in accordance
with any conditions attached thereto, the vehicle approval may be extended without further
testing. The additional or substitutional electrical/electronic system or ESA shall be
considered as part of the vehicle for conformity of production purposes.
7.2. Where the additional or substitutional part(s) has (have) not received approval pursuant to
this Regulation, and if testing is considered necessary, the whole vehicle shall be deemed to
conform if the new or revised part(s) can be shown to conform to the relevant requirements of
Paragraph 6 or if, in a comparative test, the new part can be shown not to be likely to
adversely affect the conformity of the vehicle type.
7.3. The addition by a vehicle manufacturer to an approved vehicle of standard domestic or
business equipment, other than mobile communication equipment, which conforms to other
regulations, and the installation, substitution or removal of which is according to the
recommendations of the equipment and vehicle manufacturers, shall not invalidate the vehicle
approval. This shall not preclude vehicle manufacturers fitting communication equipment in
accordance with suitable installation guidelines developed by the vehicle manufacturer and/or
manufacturer(s) of such communication equipment. The vehicle manufacturer shall provide
evidence (if requested by the test authority) that vehicle performance is not adversely
affected by such transmitters. This can be a statement that the power levels and installation
are such that the immunity levels of this Regulation offer sufficient protection when subject to
transmission alone i.e. excluding transmission in conjunction with the tests specified in
Paragraph 6. This Regulation does not authorise the use of a communication transmitter
when other requirements on such equipment or its use apply.
8. CONFORMITY OF PRODUCTION
The conformity of production procedures shall comply with those set out in the Agreement,
Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with the following requirements:
8.1. Vehicles or components or ESAs approved under this Regulation shall be so manufactured
as to conform to the type approved by meeting the requirements set forth in Paragraph 6
above.
8.2. Conformity of production of the vehicle or component or separate technical unit shall be
checked on the basis of the data contained in the communication form(s) for type approval set
out in Annex 3A and/or 3B of this Regulation.

11.3. The competent authority granting the approval extension shall assign a serial number to the
extension and so notify the other Parties to the 1958 Agreement applying this Regulation by
means of a communication form conforming to the models in Annexes 3A and 3B to this
Regulation.
12. TRANSITIONAL PROVISIONS
12.1. As from the official date of entry into force of the 02 series of amendments no Contracting
Party applying this Regulation shall refuse to grant approvals under this Regulation as
amended by the 02 series of amendments.
12.2. As from January 1, 1998, Contracting Parties applying this Regulation shall grant approvals
only if the requirements of this Regulation, as amended by the 02 series of amendments to
this Regulation, are satisfied. For vehicles of Category L the provisions of this paragraph
shall apply from June 17, 1999.
12.3. Paragraph 12.2. is not applicable to vehicle types approved to Regulation No. 24 before
January 1, 1996 nor, where applicable, to subsequent extensions of these approvals. For
vehicles of Category L the provisions of Annexes 6 and 9 shall apply from August 18, 2000.
12.4. As from October 1, 2002, Contracting Parties applying this Regulation may refuse to
recognise approvals which have not been granted in accordance with the 02 series of
amendments to this Regulation. For vehicles of Category L, the provisions of this paragraph
shall apply from August 18, 2004.
12.5. Notwithstanding the provisions of Paragraphs 12.2. and 12.4. above, Contracting Parties
applying this Regulation shall continue to grant approvals according to the 01 series of
amendments to this Regulation:
12.5.1. To components for use on vehicle types which have been approved before the dates
mentioned in Paragraph 12.2. pursuant to either Regulation No. 10 or Regulation No. 24 and,
where applicable, subsequent extensions to these approvals;
12.5.2. To vehicles of Category L, until the date of entry into force of Supplement 1 to the 02 series of
amendments to Regulation No. 10, containing specific prescriptions for those vehicles.
13. NAMES AND ADDRESSES OF TECHNICAL SERVICES CONDUCTING APPROVAL
TESTS AND ADMINISTRATIVE DEPARTMENTS
The Parties to the 1958 Agreement applying this Regulation shall communicate to the United
Nations Secretariat the names and addresses of the technical services conducting approval
tests and of the administrative departments which grant approvals and to which forms
certifying approval or extension, refusal or withdrawal of approval, issued in other countries,
are to be sent.

APPENDIX 2
VEHICLE BROADBAND REFERENCE LIMITS
Antenna-Vehicle Separation: 3 m
Frequency - megahertz - logarithmic
(See Paragraph 6.2.2.2.)

APPENDIX 4
VEHICLE NARROWBAND REFERENCE LIMITS
Antenna-Vehicle Separation: 3 m
Frequency - megahertz - logarithmic
(See Paragraph 6.3.2.2.)

APPENDIX 6
ELECTRICAL/ELECTRONIC SUB-ASSEMBLY
Narrowband Reference Limits
Frequency - megahertz - logarithmic
(See Paragraph 6.6.2.1.)

ANNEX 2A
INFORMATION DOCUMENT
FOR TYPE-APPROVAL OF A VEHICLE WITH RESPECT TO
ELECTROMAGNETIC COMPATIBILITY
The following information, if applicable, shall be supplied in triplicate and include a list of contents.
Any drawings shall be supplied in appropriate scale and in sufficient detail on size A4 paper or in a folder
of A4 format.
Photographs, if any, shall show sufficient detail.
If the systems, components or separate technical units have electronic controls, information concerning
their operation shall be supplied.
GENERAL
1. Make (trade name of manufacturer):............................................................................................
2. Type and general commercial description(s): ..............................................................................
3. Means of identification of type, if marked on the vehicle (b): .......................................................
......................................................................................................................................................
4. Location of that marking: ..............................................................................................................
5. Category of vehicle (c):.................................................................................................................
6. Name and address of manufacturer:............................................................................................
7. Address(es) of assembly plant(s):................................................................................................
GENERAL CONSTRUCTION CHARACTERISTICS OF THE VEHICLE
8. Photograph(s) and/or drawing(s) of a representative vehicle: .....................................................
......................................................................................................................................................
9. Position and arrangement of the engine: .....................................................................................
POWER PLANT (q)
10. Manufacturer:................................................................................................................................
11. Manufacturer's engine code: ........................................................................................................
(as marked on the engine, or other means of identification)
12. Working principle: positive ignition/compression ignition, four stroke/two stroke .....................
13. Number and arrangement of cylinders: ........................................................................................
14. Maximum net power (t).....................................kW at ........................................................... rpm
15. Fuel Feed

38. Brief description of the electrical/electronic components (if any): ................................................
......................................................................................................................................................
39. Range and method of adjustment, if any, of the steering control:................................................
......................................................................................................................................................
BRAKES
40. For vehicles with anti-lock systems, description of system operation (including any electronic
parts), electric block diagram, hydraulic or pneumatic circuit plan:..............................................
BODYWORK
41. Type of bodywork: ........................................................................................................................
42. Windscreen and other windows
43. A brief description of the electrical/electronic components (if any) of the window lifting
mechanism: ..................................................................................................................................
44. Windscreen wiper(s)
45. Detailed technical description (including photographs or drawing):.............................................
......................................................................................................................................................
46. Defrosting and demisting
47. Detailed technical description (including photographs or drawings): ...........................................
......................................................................................................................................................
48. Rear-view mirrors (state for each mirror): ....................................................................................
......................................................................................................................................................
49. Brief description of the electronic components (if any) of the adjustment system: ......................
......................................................................................................................................................
50. Seats
51. Characteristics: Description and drawings of:
52. The adjustment system: ...............................................................................................................
53. The displacement and locking systems:.......................................................................................
54. Safety belts and/or other restraint systems
55. Brief description of the electrical/electronic components (if any): ................................................
......................................................................................................................................................
56. Suppression of radio interference
57. Description and drawings/photographs of the shapes and constituent materials of the part of
the body forming the engine compartment and the part of the passenger compartment
nearest to it: ..................................................................................................................................

ANNEX 2B
INFORMATION DOCUMENT
FOR TYPE-APPROVAL OF AN ELECTRIC/ELECTRONIC SUB-ASSEMBLY
WITH RESPECT TO ELECTROMAGNETIC COMPATIBILITY
The following information, if applicable, shall be supplied in triplicate and must include a list of contents.
Any drawings shall be supplied in appropriate scale and in sufficient detail on size A4 paper or in a folder
of A4 format.
Photographs, if any, shall show sufficient detail.
If the systems, component or separate technical units have electronic controls, information concerning
their performance shall be supplied.
1. Make (trade name of manufacturer):............................................................................................
2. Type and general commercial description(s): ..............................................................................
3. Name and address of manufacturer:............................................................................................
......................................................................................................................................................
4. In the case of components and separate technical units, location and method of affixing of the
approval mark:..............................................................................................................................
5. Address(es) of assembly plant(s):................................................................................................
......................................................................................................................................................
6. This ESA shall be approved as a component/STU
7. Any restrictions of use and conditions for fitting: ..........................................................................
Description of the ESA chosen to represent the type:
......................................................................................................................................................
......................................................................................................................................................
......................................................................................................................................................
Relevant test report(s) supplied by the manufacturer or approved/recognised laboratories for
the purpose of drawing up the communication form for type-approval.
......................................................................................................................................................
......................................................................................................................................................
......................................................................................................................................................

11. Number of test report:...................................................................................................................
12. Remarks (if any): See appendix
13. Place:............................................................................................................................................
14. Date: .............................................................................................................................................
15. Signature: .....................................................................................................................................
16. The index to the information package lodged with the approval authority, which may be
obtained on request is attached.
1. Additional information
* * *
Appendix to Type-Approval Communication Form No. .........
Concerning the Type-Approval of a Vehicle Under
Regulation No. 10
2. Special devices for the purpose of Annex 4 to this Regulation (if applicable) (e.g. ......... ):
3. Electrical system rated voltage: V. pos/neg ground
4. Type of bodywork:
5. List of electronic systems installed in the tested vehicle(s) not limited to the items in the
information document:
6. Approved/accredited laboratory (for the purpose of this Regulation) responsible for carrying
out the tests:
7. Remarks: (e.g. valid for both left-hand drive and right-hand drive vehicles).

11. No. of test report:..........................................................................................................................
12. Remarks (if any): See appendix
13. Place:............................................................................................................................................
14. Date: .............................................................................................................................................
15. Signature: .....................................................................................................................................
16. The index to the information package lodged with the approval authority, which may be
obtained on request is attached.
1. Additional information
* * *
Appendix to Type-Approval Communication Form No. .........
Concerning the Type-Approval of an Electrical/Electronic
Sub-Assembly Under Regulation No. 10
1.1. Electrical system rated voltage: V. pos/neg ground
1.2. This ESA can be used on any vehicle type with the following restrictions:
1.2.1. Installation conditions, if any:
1.3. This ESA can be used only on the following vehicle types:
1.3.1. Installation conditions, if any:
1.4. The specific test method(s) used and the frequency ranges covered to determine immunity
were: (Please specify precise method used from Annex 9)
1.5. Approved/accredited laboratory (for the purpose of this Regulation) responsible for carrying
out the test: ...................................................................................................................................
2. Remarks: ......................................................................................................................................
......................................................................................................................................................

3.3. Enclosed test facilities may be used if correlation can be shown between the results obtained in
the enclosed test facility and those obtained at an outdoor site. Enclosed test facilities do not
need to meet the dimensional requirements of Figures 1 and 2 in Appendix 1 of this Annex other
than the distance from the antenna to the vehicle and the height of the antenna. Neither do
ambient emissions need to be checked before or after the test as indicated in Paragraph 3.4 of
this Annex.
3.4. Ambient Conditions
To ensure that there is no extraneous noise or signal of a magnitude sufficient to affect
materially the measurement, measurements shall be taken before and after the main test. If
the vehicle is present when ambient measurements are taken, it will be necessary to ensure
that any emissions from the vehicle do not affect significantly the ambient measurements, for
example by removing the vehicle from the test area, removing the ignition key, or
disconnecting the battery. In both of the measurements, the extraneous noise or signal shall
be at least 10 dB below the reference limits given in Paragraph 6.2.2.1 or 6.2.2.2 of this
Regulation, except for intentional narrowband ambient transmissions.
4. VEHICLE STATE DURING TESTS
4.1. Engine
The engine shall be running at its normal operating temperature and the transmission shall be
in neutral. If for practical reasons this cannot be achieved, alternative arrangements mutually
agreed between the manufacturer and the test authority may be made. Care shall be taken to
ensure that the speed setting mechanism does not influence electromagnetic radiations.
During each measurement, the engine shall be operated as follows:
Engine type
Quasi peak
Method of measurements
Peak
Spark ignition Engine speed Engine speed
One cylinder 2 500 rpm ± 10% 2 500 rpm ± 10%
More than one cylinder 1 500 rpm ± 10% 1 500 rpm ± 10%
4.2. Testing shall not be conducted while rain or other precipitation is falling on the vehicle or
within 10 minutes after such precipitation has stopped.
5. ANTENNA TYPE, POSITION AND ORIENTATION
5.1. Antenna Type
Any antenna may be used provided it can be normalised to the reference antenna. The
method described in CISPR Publication No. 12, Edition 3, Appendix A, may be used to
calibrate the antenna.

6. FREQUENCIES
6.1. Measurements
Measurements shall be made throughout the 30 to 1,000 MHz frequency range. To confirm
that the vehicle meets the requirements of this Annex, the testing authority shall test at up to
13 frequencies in the range, e.g. 45, 65, 90, 120, 150, 190, 230, 280, 380, 450, 600, 750,
900 MHz. In the event that the limit is exceeded during the test, investigations shall be
conducted to ensure that this is due to the vehicle and not to background radiation.
6.1.1. The limits shall apply throughout the frequency range 30 - 1,000 MHz.
6.1.2. Measurements can be performed with either quasi-peak or peak detectors. The limits given in
Paragraphs 6.2 and 6.5 of this Regulation are for quasi-peak. If a peak detector is used, add
38 dB for 1 MHz bandwidth or subtract 22 dB for 1 kHz bandwidth.
6.2. Tolerances
Spot frequency
(MHz)
45, 65, 90, 120, 150, 190 and 230
280, 380, 450, 600, 750 and 900
Tolerance
(MHz)
± 5
± 20
The tolerances apply to frequencies quoted and are intended to avoid interference from
transmissions operating on or near the nominal spot frequencies during the time of
measurement.

Figure 2
Clear Horizontal Surface Free of Electromagnetic Reflection
Delimitation of the Surface Defined by an Ellipse
(See CISPR 12, Edition 4, and CISPR 16-1)

Figure 4
Position of antenna in relation to the vehicle
Dipole antenna in position to measure the vertical radiation components
Dipole antenna in position to measure the horizontal radiation components

3.2. Enclosed test facilities may be used if a correlation can be shown between the results
obtained in the enclosed test facility and those obtained at an outdoor site. Enclosed test
facilities do not need to meet the dimensional requirements of Figures 1 and 2 in Appendix 1
of Annex 4 other than the distance from the antenna to the vehicle and the height of the
antenna. Neither do ambient emissions need to be checked before or after the test, as
indicated in Paragraph 3.3 of this Annex.
3.3. Ambient Conditions
To ensure that there is no extraneous noise or signal of a magnitude sufficient to materially
affect the measurement, measurements of ambient conditions shall be taken before and after
the main test. When ambient measurements are taken, it will be necessary to ensure that
any emissions from the vehicle do not affect significantly the ambient measurements, for
example by removing the vehicle from the test area, removing the ignition key, or
disconnecting the battery. In both of the measurements, the extraneous noise or signal shall
be at least 10 dB below the reference limits given in Paragraphs 6.3.2.1 or 6.3.2.2 of this
Regulation, except for intentional narrowband ambient transmissions.
4. VEHICLE STATE DURING TESTS
4.1. All the vehicle's electronic systems shall be in normal operating mode, with the vehicle
stationary.
4.2. The ignition shall be switched on. The engine must not be running.
4.3. Testing shall not be conducted while rain or other precipitation is falling on the vehicle or
within 10 minutes after such precipitation has stopped.
5. ANTENNA TYPE, POSITION AND ORIENTATION
5.1. Antenna Type
Any antenna may be used provided it can be normalised to the reference antenna. The
method described in the CISPR Publication No. 12, Edition 3, Appendix A, may be used to
calibrate the antenna.
5.2. Height and Distance of Measurement
5.2.1. Height
5.2.1.1. 10 m Test
5.2.1.2. 3 m Test
The phase centre of the antenna shall be 150 ± 10 mm above the ground plane.
The phase centre of the antenna shall be 3.00 ± 0.05 m above the plane on which the vehicle
rests.
The phase centre of the antenna shall be 1.80 ± 0.05 m above the plane on which the vehicle
rests.

ANNEX 6
METHOD OF TESTING IMMUNITY TO ELECTROMAGNETIC RADIATION
1. GENERAL
1.1. The test method described in this Annex shall only be applied to vehicles.
1.2. Test Method
This test is intended to demonstrate the immunity to degradation in the direct control of the
vehicle. The vehicle shall be subjected to electromagnetic fields as described in this
Annex. The vehicle shall be monitored during the tests.
2. EXPRESSION OF RESULTS
For the test described in this Annex, field strengths shall be expressed in Volts/m.
3. MEASURING LOCATION
The test facility shall be capable of generating electromagnetic field strengths over the
frequency ranges defined in this Annex. The test facility shall conform to national legal
requirements regarding the emission of electromagnetic signals.
Care shall be taken so that the control and monitoring equipment shall not be affected by
radiated fields in such a way as to invalidate the tests.
4. VEHICLE STATE DURING TESTS
4.1. The vehicle shall be in an unladen condition except for necessary test equipment.
4.1.1. The engine shall normally turn the driving wheels at a steady speed of 50 km/h, or 25 km/h in
the case of L and L vehicles, if there is no technical reason for a manufacturer to prefer a
different speed. The vehicle shall be on an appropriately loaded dynamometer or
alternatively supported on insulated axle stands with minimum ground clearance if no
dynamometer is available. Where appropriate, transmission shafts may be disconnected
(e.g. trucks, two and three-wheeled vehicles).
4.1.2. Headlamps shall be on dipped beam.
4.1.3. Left or right direction indicator shall be operating, if fitted.
4.1.4. All other systems which affect the driver's control of the vehicle shall be on as in normal
operation of the vehicle.
4.1.5. The vehicle shall not be electrically connected to the test area and no connections shall be
made to the vehicle from any equipment, except as required by Paragraph 4.1.1 or 4.2. Tyre
contact with the test area floor shall not be considered to be an electrical connection.

5.2.2. Distance of Measurement
5.2.2.1. In-service conditions may be best approximated by placing the field generating device as far
from the vehicle as practical. This distance will typically lie within the range 1 to 5 m.
5.2.2.2. If the test is carried out in an enclosed facility, the field generating device's radiating elements
shall be no closer than 1.0 m to any radio absorbent material and no closer than 1.5 m to the
wall of the enclosed facility. There shall be no absorbent material between the transmitting
antenna and the vehicle under test.
5.3. Antenna Location Relative to Vehicle
5.3.1. The field generating device's radiating elements shall not be closer than 0.5 m to the outer
body surface of the vehicle.
5.3.2. The field generating device shall be positioned on the vehicle's centre line (plane of
longitudinal symmetry).
5.3.3. No part of a TLS, with the exception of the plane on which the vehicle rests, shall be closer
than 0.5 m to any part of the vehicle.
5.3.4. Any field generating device which is placed over the vehicle shall extend centrally over at
least 75 % of the length of the vehicle.
5.4. Reference Point
5.4.1. For the purposes of this Annex, the reference point is the point at which the field strength
shall be established and shall be defined as follows:
5.4.1.1. at least 2 m horizontally from the antenna phase centre or at least 1 m vertically from the
radiating elements of a TLS,
5.4.1.2. on the vehicle's centre line (plane of longitudinal symmetry),
5.4.1.3. at a height of 1.0 ± 0.05 m above the plane on which the vehicle rests or 2.0 ± 0.05 m if the
minimum height of the roof of any vehicle in the model range exceeds 3.0 m,
5.4.1.4. either:
1.0 ± 0.2 m inside the vehicle, measured from the point of intersection of the vehicle
windscreen and bonnet (Point C in Appendix 1 to this Annex),
or:
0.2 ± 0.2 m from the centre line of the foremost axle of the vehicle measured towards the
centre of the vehicle (Point D in Appendix 2 to this Annex),
whichever results in a reference point closer to the antenna.
or:
at 1.0 ± 0.2 m behind the vertical centreline of the vehicle's front wheel (Point C in Appendix 3
to this Annex) in the case of three-wheeled vehicles,

7.1.3. Test Phase
The vehicle shall then be introduced into the test facility and positioned in accordance with the
requirements of Paragraph 5. The required forward power defined in Paragraph 7.1.2 shall
then be applied to the field generating device, in accordance with Paragraph 6.1.1.
7.1.4. Whatever parameter is chosen in Paragraph 7.1.2 to define the field, the same parameter
shall be used to establish the field strength during the test.
7.1.5. The field generating equipment and its layout employed during the test shall be to the same
specification as that used during the operations described in Paragraph 7.1.2.
7.1.6. Field Strength Measuring Device
A suitable compact field strength measuring device shall be used to determine the field
strength during the calibration phase.
7.1.7. During the calibration phase, the phase centre of the field strength measuring device shall be
positioned at the reference point.
7.1.8. If a calibrated receiving antenna is used as the field strength measuring device, readings shall
be obtained in three mutually orthogonal directions and the isotropic equivalent value of the
readings shall be taken as the field strength.
7.1.9. To take account of different vehicle geometries, a number of antennae positions or reference
points may need to be established for a given test facility.
7.2. Field Strength Contour
7.2.1. During the calibration phase (prior to a vehicle being introduced into the test area), the field
strength in at least 80 % of the calibration frequencies shall not be less than 50 % of the
nominal field strength, at the following locations:
(i)
(ii)
for all field generating devices 0.5 ± 0.05 m either side of the reference point on a line
passing through the reference point and at the same height as the reference point, and
perpendicular to the vehicle plane of longitudinal symmetry;
in the case of a TLS, 1.50 ± 0.05 m on a line passing through the reference point at the
same height as the reference point and along the line of longitudinal symmetry.
7.3. Chamber Resonance
Where the conditions described in Paragraph 7.2.1 above are not met, tests shall not be
performed at chamber resonance frequencies.
7.4. Characteristics of the Test Signal to be Generated
7.4.1. Maximum Envelope Excursion
The maximum envelope excursion of the test signal shall equal the maximum envelope
excursion of an unmodulated sine wave whose r.m.s. value in Volts/m is defined in
Paragraph 6.4.2 of this Regulation (See Appendix 7 to this Annex).

ANNEX 6 - APPENDIX 1

ANNEX 6 - APPENDIX 3

ANNEX 6 - APPENDIX 5

ANNEX 6 - APPENDIX 7
CHARACTERISTICS OF SIGNAL TO BE GENERATED

4. ESA STATE DURING TESTS
4.1. The ESA under test shall be in normal operation mode.
4.2. Measurements shall not be made while rain of other precipitation is falling on the ESA under
test or within 10 minutes after such rain or other precipitation has stopped.
4.3. Test Arrangements
4.3.1. The ESA under test and its wiring harnesses shall be supported 50 ± 5 mm above a wooden
or equivalent non-conducting table. However, if any part of the ESA under test is intended to
be electrically bonded to a vehicle's metal bodywork, that part shall be placed on a ground
plane and shall be electrically bonded to the ground plane. The ground plane shall be a
metallic sheet with a minimum thickness of 0.5 mm. The minimum size of the ground plane
shall depend on the size of the ESA under test but shall allow for the distribution of the ESA's
wiring harness and components. The ground plane shall be connected to the protective
conductor of the earthing system. The ground plane shall be situated at a height of
1.0 ± 0.1 m above the test facility floor and shall be parallel to it.
4.3.2. The ESA under test shall be arranged and connected according to its requirements. The
power supply harness shall be positioned along, and within 100 mm of, the edge of the
ground plane/table closest to the antenna.
4.3.3. The ESA under test shall be connected to the grounding system according to the
manufacturer's installation specification, no additional grounding connections shall be
permitted.
4.3.4. The minimum distance between the ESA under test and all other conductive structures, such
as walls of a shielded areas (with the exception of the ground plane/table underneath the test
object) must be 1.0 m.
4.4. Power shall be applied to the ESA under test via a 5 µH/50W artificial network (AN) which
shall be electrically bonded to the ground plane. The electrical supply voltage shall be
maintained at ± 10 % of its nominal system operating voltage. Any ripple voltage shall be less
than 1.5 % of the nominal system operating voltage measured at the AN monitoring port.
4.5. If the ESA under test consists of more than one unit, the interconnecting cables should ideally
be the wiring harness as intended for use in the vehicle. If these are not available, the length
between the main unit and the AN shall be 1,500 ± 75 mm.
All cables in the loom should be terminated as realistically as possible and preferably with real
loads and actuators.
If extraneous equipment is required for the correct operation of the ESA under test,
compensation shall be made for the contribution it makes to the disturbances measured.
5. ANTENNA TYPE, POSITION AND ORIENTATION
5.1. Antenna Type
Any linearly polarised antenna may be used provided it can be normalised to the reference
antenna.

6.2. Tolerances
Spot frequency
(MHz)
45, 65, 90, 120, 150, 190 and 230
280, 380, 450, 600, 750 and 900
Tolerance
(MHz)
± 5
± 20
The tolerances apply to frequencies quoted and are intended to avoid interference from
transmissions operating on or near the nominal spot frequencies during the time of
measurement.

ANNEX 7 - APPENDIX 2
Figure 1

ANNEX 8
METHOD OF MEASURING NARROWBAND ELECTROMAGNETIC DISTURBANCES
GENERATED BY ELECTRICAL/ELECTRONIC SUB-ASSEMBLIES
1. GENERAL
1.1. The test method described in this Annex shall apply to ESAs.
1.2. Measuring Apparatus
The measuring equipment shall comply with the requirements of publication No. 16-1 (93) of
the International Special Committee on Radio Interference (CISPR).
An average detector or a peak detector shall be used for the measurement of narrowband
electromagnetic disturbances for the purpose of this Annex.
1.3. Test Method
This test is intended to measure the narrowband electromagnetic disturbances such as might
emanate from a microprocessor-based system.
As a short (2-3 minutes) initial step, choosing one antenna polarisation, it is permitted to make
sweeps of the frequency range identified in Paragraph 6.1 of this Annex using a spectrum
analyser to indicate the existence and/or whereabouts of peak emissions. This may assist in
the choice of frequencies to be tested (See Paragraph 6 of this Annex).
2. EXPRESSION OF RESULTS
The results of measurements shall be expressed in dB micro-Volts/m (micro-Volts/m).
3. MEASURING LOCATION
3.1. The test site shall conform to the requirements of Publication No. 16-1 (93) of the
International Special Committee on Radio Interference (CISPR) (See Appendix 1 to Annex 7).
3.2. The measuring set, test hut or vehicle in which the measurement set is located shall be
outside the boundary shown in Appendix 1 to Annex 7.
3.3. Enclosed test facilities may be used if correlation can be shown between the results obtained
in the enclosed test facility those obtained in an outdoor site. Enclosed test facilities do not
need to meet the dimensional requirements of Appendix 1 to Annex 7 other than the distance
from the antenna to the ESA under test and the height of the antenna (See Figures 1 and 2 of
Appendix 2 to Annex 7).
3.4. Ambient Conditions
To ensure that there is no extraneous noise or signal of a magnitude sufficient to affect
materially the measurement, measurements shall be taken before and after the main test. In
both of these measurements, the extraneous noise or signal shall be at least 10 dB below the
reference limits given in Paragraph 6.6.2.1 of this Regulation, except for intentional
narrowband ambient transmissions.

5.2. Height and Distance of Measurement
5.2.1. Height
The phase centre of the antenna shall be 150 ± 10 mm above ground plane.
5.2.2. Distance of Measurement
The horizontal distance from the phase centre, or tip of the antenna as appropriate, to the
edge of the ground plane shall be 1.00 ± 0.05 m. No part of the antenna shall be closer than
0.5 m to the ground plane. The antenna shall be placed parallel to a plane which is
perpendicular to the ground plane and coincident with the edge of the ground plane along
which the principal portion of the harness runs.
5.2.3. If the test is carried out in a facility enclosed for radio frequency electromagnetic screening
purposes, the antenna's receiving elements shall be no closer than 0.5 m to any radio
absorbent material and no closer than 1.5 m to the wall of the enclosed facility. There must
be no absorbent material between the receiving antenna and the ESA under test.
5.3. Antenna Orientation and Polarisation
5.4. Readings
At the measuring point, readings shall be taken with the antenna in both vertical and
horizontal polarisation.
The maximum of the two readings taken (in accordance with Paragraph 5.3) at each spot
frequency shall be taken as the characteristic reading.
6. FREQUENCIES
6.1. Measurements
Measurements shall be made throughout the 30 to 1,000 MHz frequency range. This range
shall be divided into 13 bands. In each band one spot frequency may be tested to
demonstrate that the required limits are satisfied. To confirm that the ESA under test meets
the requirements of this Annex, the testing authority shall test one such point in each of the
following 13 frequency bands: 30-50, 50-75, 75-100, 100-130, 130-165, 165-200, 200-250,
250-320, 320-400, 400-520, 520-660, 660-820, 820-1,000 MHz.
In the event that the reference limit is exceeded during the test, investigations shall be made
to ensure that this is due to the ESA under test and not to background radiation.
6.2. If during the initial step which may have been carried out as described in Paragraph 1.3 of this
Annex, the radiated narrowband disturbances for any of the bands identified in Paragraph 6.1
are at least 10 dB below the reference limit, then the ESA shall be deemed to conform to the
requirements of this Annex in respect of that frequency band.

4.4. To ensure reproducible measurement results are obtained the tests signal generating
equipment and its layout shall be to the same specification as that used during each
appropriate calibration phase (Paragraphs 7.2, 7.3.2.3, 8.4, 9.2 and 10.2 of this Annex).
4.5. If the ESA under test consists of more than one unit, the vehicle wiring harness should
preferably be used. If these are not available, the length between the electronic control unit
and the AN shall be 1,500 ± 75 mm. All cables in the loom should be terminated as
realistically as possible and preferably with real loads and actuators.
5. FREQUENCY RANGE, DWELL TIMES
5.1. Measurements shall be made in the 20 to 1,000 MHz frequency range.
5.2. To confirm that the ESAs meet the requirements of this Annex, the tests shall be performed at
up to 14 spot frequencies in the range, e.g.: 27, 45, 65, 90, 120, 150, 190, 230, 280, 380, 450,
600, 750, 900 MHz
The response time of the equipment under test shall be considered and the dwell time shall
be sufficient to allow the equipment under test to react under normal conditions. In any case,
it shall not be less than two seconds.
6. CHARACTERISTICS OF TEST SIGNAL TO BE GENERATED
6.1. Maximum Envelope Excursion
The maximum envelope excursion of the test signal shall equal the maximum envelope
excursion of an unmodulated sine wave whose r.m.s. value is defined in Paragraph 6.7.2 of
this Regulation (See Appendix 4 of Annex 6).
6.2. Test Signal Wave Form
The test signal shall be a radio frequency sine wave, amplitude modulated by a 1 kHz sine
wave at a modulation depth m of 0.8 ± 0.04.
6.3. Modulation Depth
The modulation depth m is defined as:
Maximum Envelope Excursion − Minimum Envelope Excursion
m =
Maximum Envelope Excursion + Minimum Envelope Excursion
7. STRIPLINE TESTING
7.1. Test Method
This test method consists of subjecting the wiring harness connecting the components in an
ESA to specified field strengths.

7.3.2.2. Positioning of Stripline
The stripline shall be housed in a screened room (to prevent external emissions) and
positioned 2 m away from walls and any metallic enclosure to prevent electromagnetic
reflections. RF absorber material may be used to damp these reflections. The stripline shall
be placed on non-conducting supports at least 0.4 m above the floor.
7.3.2.3. Calibration of the Stripline
A field measuring probe shall be positioned within the central 1/3 of the space between the
plates with the system under test absent. The associated measuring equipment shall be sited
outside the screened room.
At each desired test frequency, a level of power shall be fed into the stripline to produce the
required field strength at the probe. This level of forward power, or another parameter directly
related to the forward power required to define the field, shall be used for type approval tests
unless changes occur in the facilities or equipment which necessitate this procedure being
repeated.
7.3.2.4. Installation of the ESA Under Test
The main control unit shall be positioned within the central 1/3 of the space between the
plates. It shall be supported on a stand made from non-conducting material.
7.3.2.5. Main Wiring Loom and Sensor/Actuator Cables
The main wiring loom and any sensor/actuator cables shall rise vertically from the control unit
to the top ground plate (this helps to maximise coupling with the electromagnetic field). Then
they shall follow the underside of the plate to one of its free edges where they shall loop over
and follow the top of the ground plate as far as the connections to the stripline feed. The
cables shall then be routed to the associated equipment which shall be sited in an area
outside the influence of the electromagnetic field, e.g. on the floor of the screened room not
less than 1 m from the stripline.
8. FREE FIELD ESA IMMUNITY TEST
8.1. Test Method
This test method allows the testing of vehicle electrical/electronic systems by exposing an
ESA to electromagnetic radiation generated by an antenna.
8.2. Test Bench Description
The test shall be performed on a bench inside a semi-anechoic chamber the anechoic portion
of which extends to the bench top.

8.3.2. Height and Distance of Measurement
8.3.2.1. Height
The phase centre of any antenna shall be 150 ± 10 mm above the ground plane on which the
ESA under test rests. No parts of any antenna's radiating elements shall be closer than
250 mm to the floor of the facility.
8.3.2.2. Distance of Measurement
8.3.2.2.1. In-service conditions may best be approximated by placing the field generating device as far
from the ESA as practical. This distance will typically lie within the range 1 to 5 m.
8.3.2.2.2. If the test is carried out in an enclosed facility, the antenna's radiating elements shall be no
closer than 0.5 m to any radio absorbent material and no closer than 1.5 m to the wall of the
facility. There shall be no absorbent material interposed between the transmitting antenna
and the ESA under test.
8.3.3. Antenna Location Relative to ESA Under Test
8.3.3.1. The field generating device's radiating elements shall not be closer than 0.5 m to the edge of
the ground plane.
8.3.3.2. The phase centre of the field generating device shall be on a plane which:
(i)
is perpendicular to the ground plane;
(ii) bisects the edge of the ground plane and the mid-point of the principal portion of the
wiring harness;
and
(iii) is perpendicular to the edge of the ground plane and the principal portion of the wiring
harness.
The field generating device shall be placed parallel to this plane (See Figures 1 and 2 of
Appendix 4 to this Annex).
8.3.3.3. Any field generating device which is placed over the ground plane or ESA under test shall
extend over the ESA under test.
8.3.4. Reference Point
For the purpose of this Annex, the reference point is the point at which the field strength shall
be established and shall be defined as follows:
8.3.4.1. At least 1 m horizontally from the antenna phase centre or at least 1 m vertically from the
radiating elements of a plate antenna;

8.5. Field Strength Contour
8.5.1. During the calibration phase of the substitution method (prior to an ESA under test being
introduced into the test area), the field strength shall not be less than 50 % of the nominal
field strength 0.5 ± 0.05 m either side of the reference point on a line parallel to the edge of
the ground plane nearest to the antenna and passing through the reference point.
9. TEM CELL TESTING
9.1. Test Method
The TEM (Transverse Electromagnetic Mode) cell generates homogeneous fields between
the internal conductor (septum) and housing (ground plane). It is used for testing ESAs (See
Figure 1 of Appendix 3 to this Annex).
9.2. Field Strength Measurement in a TEM Cell
9.2.1. The electric field in the TEM cell shall be determined by using the equation:
E
=
( P ⋅ Z)
d
E = Electric field (Volts/metre)
P = Power flowing into cell (W)
Z = Impedance of cell (50Ω)
d = Separation distance (metres) between the upper wall and the plate (septum).
9.2.2. Alternatively, an appropriate field strength sensor shall be placed in the upper half of the TEM
cell. In this part of the TEM cell the electronic control unit(s) has only a small influence on the
test field. The output of this sensor shall determine the field strength.
9.3. Dimensions of TEM Cell
In order to maintain a homogeneous field in the TEM cell and to obtain repeatable
measurement results, the test object shall not be larger than 1/3 of the cell inside
height. Recommended TEM cell dimensions are given in Appendix 3, Figures 2 and 3 to this
Annex.
9.4. Power, Signal and Control Wires
The TEM cell shall be attached to a co-axial socket panel and connected as closely as
possible to a plug connector with an adequate number of pins. The supply and signal leads
from the plug connector in the cell wall shall be directly connected to the test object.
The external components such as sensors, power supply and control elements can be
connected:
(i)
to a screened peripheral;

ANNEX 9 - APPENDIX 1
Figure 1

ANNEX 9 - APPENDIX 1 (Cont'd)
Figure 3
800 mm Stripline Testing

ANNEX 9 - APPENDIX 2
Figure 1
Bulb Current Injection Measurement Installation

ANNEX 9 - APPENDIX 3 (Cont'd)
Figure 2

ANNEX 9 - APPENDIX 4
Figure 1

Electromagnetic Compatibility.