2020DS/EN IEC 60904-9:2020 Photovoltaic devices – Part 9: Classification of solar simulator characteristics
2008DS/EN 60904-9:2008 Photovoltaic devices - Part 9: Solar simulator performance requirements
DS/EN IEC 60904-9:2020 Photovoltaic devices – Part 9: Classification of solar simulator characteristics was changed to DS/EN 60904-9:2008 Photovoltaic devices - Part 9: Solar simulator performance requirements.