CISPR Technical Report 16-4-4

CISPR TR 16-4-4:2025 which is a Technical Report, establishes the CISPR model for the calculation of limits for the protection of radio services, based on data from the IEC Radio Services Database (RSD) and estimations of the input values for related probabilistic factors. This is part of the process of the derivation of disturbance limits in the radio frequency spectrum for use in publications containing emission requirements Application of this document leads to a frequency dependent limit result for a particular disturbance phenomenon and the considered product or product type establishing the technical basis in the CISPR limit specification procedure.
NOTE Non-technical parameters and terms that can be considered to influence a limit for inclusion in IEC publications are excluded from the modelling (see also Clause 4.6.5.3).
This third edition cancels and replaces the second edition published in 2007, Amendment 1:2017 and Amendment 2:2020. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) full revision of the limit calculation model;
b) the content on statistics of complaints was taken from this publication and published as separate document (CISPR TR 16-4-6);
c) application cases/rationales were separated from the model and will be handled in another document to be drafted.