Council Directive 72/245/EEC of 20 June 1972 on the approximation of the laws of the Member States relating to the suppression of radio interference produced by spark-ignition engines fitted to motor vehicles
Docs | E/ECE/324 | Add. 9, |
E/ECE/Trans/505 |
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requirements regarding the immunity to radiated and conducted disturbances for functions related to direct control of the vehicle, related to driver, passenger and other road users' protection and related to disturbances, which would cause confusion to the driver or other road users, requirements regarding the control of unwanted radiated and conducted emissions to protect the intended use of electrical or electronic equipment at own or adjacent vehicles or nearby, and the control of disturbances from accessories that may be retrofitted to the vehicle.
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2.1.1. "Electromagnetic compatibility" means the ability of a vehicle or component(s) or separate technical unit(s) to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment. 2.1.2. "Electromagnetic disturbance" means any electromagnetic phenomenon which may degrade the performance of a vehicle or component(s) or separate technical unit(s), or of any other device, unit of equipment or system operated in vicinity of a vehicle. An electromagnetic disturbance may be electromagnetic noise, an unwanted signal or a change in the propagation medium itself. 2.1.3. "Electromagnetic immunity" means the ability of a vehicle or component(s) or separate technical unit(s) to operate without degradation of performance in the presence of (specified) electromagnetic disturbances which includes wanted radio frequency signals from radio transmitters or radiated in-band emissions of industrial-scientific-medical (ISM) apparatus, internal or external to the vehicle. 2.1.4. "Electromagnetic environment" means the totality of electromagnetic phenomena existing at a given location. 2.1.5. "Broadband emission" means an emission, which has a bandwidth greater than that of a particular measuring apparatus or receiver (International Special Committee on Radio Interference (CISPR) 25, 2nd edition). 2.1.6. "Narrowband emission" means an emission which has a bandwidth less than that of a particular measuring apparatus or receiver (CISPR 25, 2nd edition). 2.1.7. "Electrical/electronic system" means (an) electrical and/or electronic device(s) or set(s) of devices together with any associated electrical connections which form part of a vehicle but which are not intended to be type-approved separately from the vehicle. 2.1.8. "Electrical/electronic subassembly" (ESA) means an electrical and/or electronic device or set(s) of devices intended to be part of a vehicle, together with any associated electrical connections and wiring, which performs one or more specialised functions. An ESA may be approved at the request of a manufacturer or his authorised representative as either a "component" or a "separate technical unit (STU)" (see Directive 70/156/EEC, Article 2). 2.1.9. "Vehicle type" in relation to electromagnetic compatibility means vehicles which do not differ essentially in such respects as: -
2.1.9.1. the overall size and shape of the engine compartment; 2.1.9.2. the general arrangement of the electrical and/or electronic components and the general wiring arrangement; 2.1.9.3. the primary material of which the body or shell (if applicable) of the vehicle is constructed (for example, a steel, aluminium or fibreglass body shell). The presence of panels of different material does not change the vehicle type provided the primary material of the body is unchanged. However, such variations must be notified.
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2.1.10. An "ESA type" in relation to electromagnetic compatibility means ESAs which do not differ in such essential respects as: -
2.1.10.1. the function performed by the ESA; 2.1.10.2. the general arrangement of the electrical and/or electronic components, if applicable.
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2.1.11. "Vehicle wiring harness" means supply voltage, bus system (e.g. CAN), signal or active antenna cables, which are installed by the vehicle manufacturer. 2.1.12. Immunity-related functions are: -
(a) functions related to the direct control of the vehicle: -
by degradation or change in: e.g. engine, gear, brake, suspension, active steering, speed limitation devices by affecting driver’s position, e.g. seat or steering wheel positioning, by affecting driver’s visibility: e.g. dipped beam, windscreen wiper;
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(b) functions related to driver, passenger and other road-user protection: -
e.g. airbag and safety restraint systems;
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(c) functions which, when disturbed, cause confusion to the driver or other road users: -
optical disturbances: incorrect operation of e.g. direction indicators, stop lamps, end outline marker lamps, rear position lamp, light bars for emergency system, wrong information from warning indicators, lamps or displays related to functions in clauses (a) or (b) which might be observed in the direct view of the driver, acoustical disturbances: incorrect operation of anti-theft alarm, horn, for example;
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(d) functions related to vehicle data bus functionality: -
by blocking data transmission on vehicle data bus-systems, which are used to transmit data, required to ensure the correct functioning of other immunity-related functions;
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(e) functions which, when disturbed, affect vehicle statutory data: e.g. tachograph, odometer.
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2.1.13. "24 GHz short-range radar equipment" means a radar as defined in Article 2(2) of Commission Decision 2005/50/EC , and satisfying the performance requirements of Article 4 of that Decision.OJ L 21, 25.1.2005, p. 15 .2.1.14. "79 GHz short-range radar equipment" means a radar as defined in Article 2(b) of Commission Decision 2004/545/EC , and satisfying the performance requirements of Article 3 of that Decision.OJ L 241, 13.7.2004, p. 66 .
Test pulse number | Immunity test level | Functional status for systems | |
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Related to immunity-related functions | Not related to immunity-related functions | ||
1 | III | C | D |
2a | III | B | D |
2b | III | C | D |
3a/3b | III | A | D |
4 | III | D |
Polarity of pulse amplitude | Maximum allowed pulse amplitude for | |
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vehicles with 12 V systems | vehicles with 24 V systems | |
Positive | + |
+ |
Negative | – |
– |
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8.7.1. "Necessary bandwidth": for a given class of emission, the width of the frequency band which is just sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions (Article 1, No 1152 of the radio regulations). 8.7.2. "Out-of-band emissions": emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious emissions (Article 1, No 1144 of the radio regulations). 8.7.3. "Spurious emission": in every modulation process additional undesired signals exist. They are summarised under the expression "spurious emissions". Spurious emissions are emissions on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information. Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products, but exclude out-of-band emissions (Article 1 No 1145 of the radio regulations).
frequency bands (Hz) | max. output power (W) |
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Appendix 1 A list (with make(s) and type(s) of all electrical and/or electronic components concerned by this Directive (see paragraphs 2.1.9. and 2.1.10. of Annex I) and not previously listed. Appendix 2 Schematics or drawing of the general arrangement of electrical and/or electronic components (concerned by this Directive) and the general wiring harness arrangement. Appendix 3 Description of vehicle chosen to represent the type Body style: Left or right-hand drive: Wheelbase: Appendix 4 Relevant test report(s) supplied by the manufacturer from a test laboratory accredited to ISO 17025 and recognised by the Approval Authority for the purpose of drawing up the type-approval certificate.
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type-approval Delete where not applicable. extension of type-approval Delete where not applicable. refusal of type-approval Delete where not applicable. withdrawal of type-approval Delete where not applicable.
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type-approval Delete where not applicable. extension of type-approval Delete where not applicable. refusal of type-approval Delete where not applicable. withdrawal of type-approval Delete where not applicable.
"50 km/h cycle" vehicle test conditions | Failure criteria |
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Vehicle speed 50 km/h ± 20 % (vehicle driving the rollers). If the vehicle is equipped with a cruise control system, it shall be operational | |
Dipped beams ON (manual mode) | Lighting OFF |
Front wiper ON (manual mode) maximum speed | Complete stop of front wiper |
Direction indicator on driver’s side ON | |
Adjustable suspension in normal position | Unexpected significant variation |
Driver’s seat and steering wheel in medium position | Unexpected variation greater than 10 % of total range |
Alarm unset | Unexpected activation of alarm |
Horn OFF | Unexpected activation of horn |
Airbag and safety restraint systems operational with inhibited passenger airbag if this function exists | Unexpected activation |
Automatic doors closed | Unexpected opening |
Adjustable endurance brake lever in normal position | Unexpected activation |
"Brake cycle" vehicle test conditions | Failure criteria |
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To be defined in brake cycle test plan. This must include operation of the brake pedal (unless there are technical reasons not to do so) but not necessarily an anti-lock brake system action. |
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AM, with 1 kHz modulation and 80 % modulation depth in the 20-800 MHz frequency range, and PM, t on 577 μs, period 4600 μs in the 800-2000 MHz frequency range,
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Absorber Chamber test: according to ISO 11452-2: 2nd edition 2004 TEM cell testing: according to ISO 11452-3: 2nd edition 2001 Bulk current injection testing: according to ISO 11452-4: 3rd edition 2005 Stripline testing: according to ISO 11452-5: 2nd edition 2002 800 mm Stripline: according to clause 4.5 of this Annex.
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AM, with 1 kHz modulation and 80 % modulation depth in the 20-800 MHz frequency range, PM, t on 577 μs, period 4600 μs in the 800-2000 MHz frequency range,
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The injection probe shall be positioned at a distance of 150 mm from the ESA to be tested. The reference method shall be used to calculate injected currents from forward power. The frequency range of the method is limited by the injection probe specification.