BS EN 55012:2007 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.
NOTE 1 Experience has shown that compliance with
this standard may provide satisfactory protection for
receivers of other types of transmissions when used in
the residential environment, including radio
transmissions in frequency ranges other than that
specified.
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 (see 3.1);
b) boats propelled by an internal combustion engine, electrical means or both (see 3.2).
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 (see 3.3).
See Annex G for a flow chart to help determine the applicability of CISPR 12.
This standard does not apply to aircraft, traction systems (railway, tramway and electric trolley
bus), or to incomplete vehicles. In the case of a dual-mode trolley bus (e.g. propelled by
power from either a.c./d.c. mains or an internal combustion engine), the internal combustion
propulsion system must be included, but the a.c./d.c. mains portion of the vehicle propulsion
system is excluded from this standard.
NOTE 2 Protection of receivers used on board the same vehicle as the disturbance source(s) are covered by
CISPR 25.
The measurement of electromagnetic disturbances while the vehicle is connected to power
mains for charging is not covered in this standard. The user is referred to appropriate IEC and
CISPR standards which define measurement techniques and limits for this condition.
Annex H lists work being considered for future revisions.
BS EN 55012:2007 history
2008BS EN 55012:2007+A1:2009 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers
2008BS EN 55012:2007 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers
2002BS EN 55012:2002 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/de
1999BS CISPR 12:1999 Vehicles, motorboats and spark-ignited engine-driven devices - Radio disturbance characteristics - Limits and methods of measurement
1970BS 833:1970 Specification for radio interference limits and measurements for the electrical ignition systems of internal combustion engines