Applies to information technology equipment (ITE). Procedures are given for the measurement of the levels of spurious signals generated by the ITE and limits are specified for the frequency range 9 kHz to 400 GHz for both class A and class B equipment. No measurements need be performed at frequencies where no limits are specified. The intention of this publication is to establish uniform requirements for the radio disturbance level of the equipment contained in the scope, to fix limits of disturbance, to describe methods of measurement and to standardize operating conditions and interpretation of results. This consolidated version consists of the fifth edition (2005), its amendment 1 (2005) and its amendment 2 (2006). Therefore, no need to order amendments in addition to this publication. Keywords: electromagnetic compatibility; EMC; smart city; rural electrification