文档介绍：National Standard of the People’s Republic of China
Limits and methods of measurement of radio
disturbance characteristics for the protection
of receivers used on board vehicles
GB 18655-2002
idt IEC/CISPR 25:1995
Section 1: General
1 Scope
This standard contains limits1) and procedures for the measurement of radio disturbances in the frequency
range of 150 kHz to 1000 MHz. The standard applies to any electronic/ponent intended for
use in vehicles and large devices. Refer to International munications Union (ITU) publications for
details of frequency allocations. The limits are intended to provide protection for receivers installed in a
vehicle from disturbances produced ponents/modules in the same vehicle2). The methods and
limits for plete vehicle are in Section 2 and the methods and limits ponents/modules are in
Section 3.
The receiver types to be protected are: sound and television receivers3), land mobile radio, radio telephone,
amateur and citizens’ radio. For the purpose of this standard, a vehicle is a machine which is
self-propelled. Vehicles include (but are not limited to) passenger cars, trucks, agricultural tractors and
snow mobiles.
The limits in this standard are mended and subject to modification as agreed between the vehicle
manufacturer and ponent supplier. This standard is also intended to be applied by manufacturers
and suppliers ponents and equipment which are to be added and connected to the vehicle harness or
to an on-board power connector after delivery of the vehicle.
This standard does not include protection of electronic control systems from radio frequency (.)
emissions, or from transient or pulse-type voltage fluctuations. These subjects are expected to be included
in ISO publications.
Since the mounting location, vehicle body construction and harness design can affect the coupling of radio
disturbances to the on-board radio, Section 3