EN 60835-1-4 : methods of measurements for equipment used in digital microwave radio transmission systems: part 1: measurements common to terrestrial radio-relay systems and satellite earth stations: section 4: transmission performance: (IEC 835-1-4:1992) / European Commitee for Electrothecnical Standardization
EN 60835-2-4 : methods of measurements for equipment used in digital microwave radio transmission systems: part 2: measurements on terrestrial radio-relay systems: section 4: transmitter/receiver including modulator/demodulator: (IEC 835-2-4:1993) / European Commitee for Electrothecnical Standardization
EN 60950/A3 : safety of information technology equipment, including electrical business equipment: (IEC 950: 1991/A3: 1995, modified) / European Commitee for Electrothecnical Standardization
EN 60950 : sicherheit von einrichtungen der informationstechnik, einschlieblich elektrischer buromaschinen / Europaisches Komitee Fur Elektrotechnische Normung