a) coupling mechanisms and possible countermeasures;b) assessment of the electromagnetic environment;c) filtering, isolation and surge protections measures.Cross References:EN 50174EN 50174-3EN 50173EN 50174-2:2018EN 50310:2016 ITU-T K.45 ITU-T K.20IEC/TR 61000-5-3EN 61643 CLC/TR 50659EN 50173-1EN 62368-1IEC 60728ITU-T K.44 EN 50083ITU-T K.21IEC 61643EN 60728IEC 62368-1:2014