Functional Safety and IEC 61508); IEC 61508-3:2010 EN-FR c3b8b254 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (see Functional Safety and IEC 61508); IEC 61788-7:2006 EN 19361a21 Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of superconductors at microwave frequencies; IEC 61969-1:2020 RLV EN 1d266b94 Mechanical structures for electrical and electronic equipment - Outdoor enclosures - Part 1: Design guidelines; IEC 62425:2007 EN-FR 1cb66f43 Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling;">