CISPR 12:20 07+A1:2009本国际标准中的限值旨在为在住宅环境中使用时在30 MHz至1 000 MHz频率范围内的广播接收机提供保护。遵守本标准可能无法为在距离车辆、船只或设备10米以内的住宅环境中使用的新型无线电发射或接收器提供足够的保护。本标准适用于可能对无线电接收造成干扰的电磁能的发射，并且是从 a)由内燃机、电气装置或两者驱动的车辆； b)由内燃机、电力装置或两者推动的船只。船只应以与车辆相同的方式进行测试，除非它们具有本标准中明确规定的独特特性；c)装有内燃机的装置。 与上一版本相比，进行了以下更改: -删除窄带/宽带确定； ——全面改进措辞。 本合并版本由第六版（2007年）组成 及其修正案1（2009年）。因此，无须在 本出版物的补充。

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.