车辆、船只和内燃机.无线电干扰特性.车载接收器保护用限值和测量方法

[中文适用范围]： 本文件包含150 kHz至5 925 MHz频率范围内无线电干扰的测量限值和程序。本文件适用于车辆、船只、内燃机、拖车、设备以及任何打算用于车辆、船只、拖车和设备的电子/电气组件。参考国际电信联盟（ITU）出版物以了解频率分配详情。限值旨在保护根据制造商指南安装在车辆内的车载接收器，免受同一车辆内组件/模块产生的干扰。需要保护的接收器类型包括广播接收器（声音和电视）、陆地移动无线电、无线电电话、业余无线电、公民无线电、卫星导航（GPS等）、WiFi、V2X和蓝牙。本文件不包括从无线电频率（RF）发射或瞬态/脉冲型电压波动中保护电子控制系统的内容。这些主题包含在ISO出版物中。本文件中的限值是推荐性的，并可由客户（如车辆制造商）与供应商（如组件制造商）协商修改。本文件还旨在由车辆制造商和供应商应用，这些制造商和供应商将在车辆交付后将其添加到车辆线束或车载电源连接器上。本文件定义了车辆制造商和供应商使用的测试方法，以帮助设计车辆和组件，并确保车载无线电频率发射处于受控水平。本文件中的发射要求不适用于ITU定义的无线电发射机的有意传输（包括其杂散发射）。 [外文原描述]： CISPR 25:2021 contains limits and procedures for the measurement of radio disturbances in the frequency range of 150 kHz to 5 925 MHz. This document applies to vehicles, boats, internal combustion engines, trailers, devices and any electronic/electrical component intended for use in vehicles, boats, trailers and devices. Refer to International Telecommunications Union (ITU) publications for details of frequency allocations. The limits are intended to provide protection for on-board receivers installed (per the manufacturer’s guidelines) in a vehicle from disturbances produced by components/modules in the same vehicle. The receiver types to be protected are, for example, broadcast receivers (sound and television), land mobile radio, radio telephone, amateur, citizens' radio, Satellite Navigation (GPS etc.), Wi-Fi, V2X, and Bluetooth. This document does not include protection of electronic control systems from radio frequency (RF) emissions or from transient or pulse-type voltage fluctuations. These subjects are included in ISO publications. The limits in this document are recommended and subject to modification as agreed between the customer (e.g. vehicle manufacturer) and the supplier (e.g. component manufacturer). This document is also intended to be applied by vehicle manufacturers and suppliers which are to be added and connected to the vehicle harness or to an on-board power connector after delivery of the vehicle. This document defines test methods for use by vehicle manufacturers and suppliers, to assist in the design of vehicles and components and ensure controlled levels of on-board radio frequency emissions. The emission requirements in this document are not intended to be applicable to the intentional transmissions from a radio transmitter as defined by the ITU including their spurious emissions. NOTE 1 This exclusion is limited to those intended transmitter emissions, which leave the EUT as radiated emissions and are coupled onto the wire line in the measurement setup. For conducted transmissions on frequencies intentionally produced by the radio part of an EUT, this exclusion does not apply. NOTE 2 It is usual for customers and suppliers to use radio regulation standards to manage the effect of spurious emissions from a radio transmitter unless limits of spurious emission are agreed in the test plan. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: inclusion of new frequency bands, deletion of the annex on TEM cells, inclusion of annexes on measurement uncertainty, overall improvement.