Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices

Limites et méthodes de mesure des caractéristiques des systèmes d'allumage de véhicules à moteur et autres engins relatives aux perturbations radioélectriques

General Information

Status: Published
Publication Date: 31-Dec-1974

ICS: 27.020 - Internal combustion engines
: 33.100.10 - Emission

Technical Committee: CISPR - International special committee on radio interference

Current Stage: DELPUB - Deleted Publication
Start Date: 19-Nov-2016
Completion Date: 13-Feb-2026

Relations

Revised: CISPR 12:1978 - Limits and methods of measurement of radio interference characteristics of vehicles, motor boats, and spark-ignited engine-driven devices
Effective Date: 05-Sep-2023

CISPR 12:1975 - Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices
Released:1/1/1975 - Page 1 preview

Standard

CISPR 12:1975 - Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices Released:1/1/1975

English and French language

38 pages

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Frequently Asked Questions

What is CISPR 12:1975?

CISPR 12:1975 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices". This standard covers: Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices

What is the scope of CISPR 12:1975?

Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices

What ICS categories does CISPR 12:1975 belong to?

CISPR 12:1975 is classified under the following ICS (International Classification for Standards) categories: 27.020 - Internal combustion engines; 33.100.10 - Emission. The ICS classification helps identify the subject area and facilitates finding related standards.

What standards are related to CISPR 12:1975?

CISPR 12:1975 has the following relationships with other standards: It is inter standard links to CISPR 12:1978. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

How can I access CISPR 12:1975?

CISPR 12:1975 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

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IEC

CISPR 12:1978/AMD1:1986(Amendment)

Amendment 1 - Limits and methods of measurement of radio interference characteristics of vehicles, motor boats, and spark-ignited engine-driven devices

Standard
10 pages
English and French language
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31-Jan-1986
27.020
33.100.10
CISPR

IEC

CISPR 12:1978(Main)

Limits and methods of measurement of radio interference characteristics of vehicles, motor boats, and spark-ignited engine-driven devices

Standard
40 pages
English and French language
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31-Dec-1977
27.020
33.100.10
CISPR

IEC

CISPR 12:2025(Main)

Vehicles, boats and devices with internal combustion engines or traction batteries – Radio disturbance characteristics – Limits and methods of measurement for the protection of off-board receivers

CISPR 12:2025 The limits in this document are designed to provide protection in the frequency range of 30 MHz to 1 000 MHz for off-board receivers. Compliance with this document does not guarantee adequate protection for receivers nearer than 10 m to the vehicle, boat or device. This document applies to the emission of electromagnetic energy that can cause interference to radio reception and which is emitted from:
1) vehicles propelled by an internal combustion engine (ICE), electrical means or both (see 3.1.34);
2) boats propelled by an ICE, electrical means or both (see 3.1.4). Boats are tested in the same manner as vehicles except where they have unique characteristics as explicitly stated in this document;
3) devices equipped with ICE (see 3.1.9). In the case of hybrid devices (e.g. equipped with both ICE and traction batteries), only the ICE mode is included in this document;
4) inboard and outboard boat engines and motors [i.e. equipped with ICE, electric motor (EM), or both], when marketed independently.
See Annex D for a flow chart and a list of examples to help determine the applicability of CISPR 12.
This document does not apply to aircraft, household appliances, medical devices, traction systems (railway engine or locomotive, streetcar or tram and electric trolley bus), vehicle, boat and device off-board chargers or to incomplete vehicles, boats and devices. In the case of a dual-mode trolley bus (e.g. propelled by power from either AC/DC mains or an ICE), the ICE propulsion system is included, but the EM propulsion portion of the vehicle is excluded from this document. In addition, domestic helper robots, such as household cleaning robots, hotel service robots and personal safety robots are also excluded from the scope of this document.
NOTE 1 Other than inboard or outboard boat engines and motors that are marketed independently, this document does not apply to components or incomplete products, such as an ICE, an incomplete vehicle or boat that has not yet been fitted with an ICE or EM, or spare parts. This document only applies to the final product, which is equipped with all applicable parts and components to be able to function as intended.
NOTE 2 Appliances without ICE for typical housekeeping and service functions in the household and similar environment are covered by the requirements of CISPR 14-1[1].
NOTE 3 Protection of receivers used on board the same vehicle as the disturbance source(s) are covered by CISPR 25[2].
This document does not prescribe measurement methods or limits for conducted disturbances, for the charging mode of operation, where the (electric or hybrid) vehicle or boat is connected to power mains, either directly (i.e. plug-in vehicle or boat) or indirectly (i.e. wireless power charging). The user is referred to appropriate IEC and CISPR standards, which define measurement techniques and limits for this condition.
NOTE 4 See IEC 61851-21-1[3] for road vehicles and IEC 61000-6-3[4], IEC 61000-6-4[5] and IEC 61000-6-8[6] for other types of vehicles or boats.
The emission requirements in this document are not applicable to the intentional transmissions from a radio transmitter, as defined by the ITU-R, including its spurious emissions.
Equipment that is covered by other CISPR product and product family emission standards are excluded from the scope of this document, except where they include ICE(s). In the latter case, the equipment complies with this document in all modes of operation where the ICE(s) is(are) active.
NOTE 5 The other CISPR product or product family emission standard can also apply to the equipment for those modes of operation where the ICE(s) is (are) not active. In case the ICE(s) is (are) always in operation, the other CISPR product or product family emission standard can still apply, for verifying the emissions from the other components and circuitry of the equipment.
Annex B and Annex C contain methods to evaluate the disturbance characteristics of high

Standard
91 pages
English language
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Standard
102 pages
French language
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Standard
193 pages
English and French language
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17-Jul-2025
27.020
33.100.10
CIS/D

IEC

CISPR 12:2007+AMD1:2009 CSV(Main)

Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers

CISPR 12:2007+A1:2009 The limits in this International Standard are designed to provide protection for broadcast receivers in the frequency range of 30 MHz to 1 000 MHz when used in the residential environment. Compliance with this standard may not provide adequate protection for new types of radio transmissions or receivers used in the residential environment nearer than 10 m to the vehicle, boat or device. This standard applies to the emission of electromagnetic energy which may cause interference to radio reception and which is emitted from
a) vehicles propelled by an internal combustion engine, electrical means or both;
b) boats propelled by an internal combustion engine, electrical means or both. Boats are to be tested in the same manner as vehicles except where they have unique characteristics as explicitly stated in this standard;
c) devices equipped with internal combustion engines.
The following changes were made with respect to the previous edition:
- deletion of narrowband / broadband determination;
- general improvement of wording.
This consolidated version consists of the sixth edition (2007) and its amendment 1 (2009). Therefore, no need to order amendment in addition to this publication.

Standard
110 pages
English and French language
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09-Mar-2009
27.020
33.100.10
CIS/D

IEC

CISPR 12:2007/AMD1:2009(Amendment)

Amendment 1 - Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers

Standard
8 pages
English and French language
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11-Jan-2009
27.020
33.100.10
CIS/D

IEC

CISPR 12:2007(Main)

Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers

The limits in this International Standard are designed to provide protection for broadcast receivers in the frequency range of 30 MHz to 1 000 MHz when used in the residential environment. Compliance with this standard may not provide adequate protection for new types of radio transmissions or receivers used in the residential environment nearer than 10 m to the vehicle, boat or device. This standard applies to the emission of electromagnetic energy which may cause interference to radio reception and which is emitted from a) vehicles propelled by an internal combustion engine, electrical means or both; b) boats propelled by an internal combustion engine, electrical means or both. Boats are to be tested in the same manner as vehicles except where they have unique characteristics as explicitly stated in this standard; c) devices equipped with internal combustion engines. This sixth edition cancels and replaces the fifth edition published in 2001 and its Amendment 1 (2005). This edition constitutes a technical revision. The following changes were made with respect to the previous edition: - deletion of narrowband / broadband determination; - general improvement of wording.

Standard
110 pages
English and French language
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Standard
109 pages
English and French language
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22-May-2007
27.020
33.100.10
CIS/D

IEC

CISPR 12:2001/AMD1:2005(Amendment)

Amendment 1 - Vehicles, boats, and internal combustion engine drive devices - Radio disturbance characteristics - Limits and methods of measurement for the protection of receivers except those installed in the vehicle/boat/device itself or in adjacent vehicles/boats/devices

Standard
3 pages
English and French language
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23-Feb-2005
27.020
33.100.10
CIS/D

IEC

CISPR 12:2001(Main)

Vehicles, boats and internal combustion engine driven devices - Radio disturbance characteristics - Limits and methods of measurement for the protection of receivers except those installed in the vehicle/boat/device itself or in adjacent vehicles/boats/devices

Applies to the emission of broadband and narrowband electromagnetic energy which may cause interference to radio reception and which is emitted from: a) vehicles propelled by an internal combustion engine, electrical means, or both; b) boats propelled by an internal combustion engine, electrical means, or both. c) devices equipped with internal combustion engines. This standard includes limits and test methods for both broadband and narrowband emissions. The limits are designed to provide protection for broadcast receivers in the frequency range of 30 MHz to 1000 MHz when used in a residential environment.

Standard
103 pages
English and French language
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Standard
105 pages
English and French language
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25-Sep-2001
27.020
33.100.10
CIS/D

IEC

CISPR 12:1997(Main)

Vehicles, motorboats and spark-ignited engine-driven devices - Radio disturbance characteristics - Limits and methods of measurement

Applies to the emission of broadband and narrowband electromagnetic energy which may cause interference to radio reception and which is emitted from: a) vehicles propelled by an internal combustion engine, electrical means, or both; b) motor boats propelled by an internal combustion engine, electrical means, or both; c) devices equipped with spark-ignited internal combustion engines. This standard includes limits and test methods for both broadband and narrowband emissions. The limits are designed to provide protection for broadcast receivers in the frequency range of 30 MHz to 1000 MHz when used in a residential environment.

Standard
99 pages
English and French language
sale 15% off

09-Jun-1997
27.020
33.100.10
CIS/D

IEC

CISPR 12:1990(Main)

Limits and methods of measurement of radio interference characteristics of vehicles, motor boats, and spark-ignited engine-driven devices.

Applies to the radiation of electromagnetic energy which may cause interference to radio reception and which is emitted from: a) vehicles propelled by an internal combustion engine, electrical means, or both; b) motor boats propelled by an internal combustion engine, electrical means, or both; c) devices equipped with spark ignited internal combustion engines. Establishes uniform requirements for radio interference suppression of vehicles, motor boats and devices and fixes limits of interference. Describes methods of measurement and gives guidance for suppression methods.

Standard
77 pages
English and French language
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30-Jan-1990
27.020
33.100.10
CIS/D

Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices

Limites et méthodes de mesure des caractéristiques des systèmes d'allumage de véhicules à moteur et autres engins relatives aux perturbations radioélectriques

General Information

Relations

CISPR 12:1975 - Limits and methods of measurement of radio interference characteristics of ignition systems of motor vehicles and other devices Released:1/1/1975

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