Optical amplifiers - Test methods - Part 3-3: Noise figure parameters - Signal power to total ASE power ratio
Edition 2014-02

Electrical relays. Part 24: Common format for transient data exchange (COMTRADE) for power systems
Edition 2001-07

Sound system equipment - Part 23: TVs and monitors - Loudspeaker systems
Edition 2023-04

Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems - Equipment with rated current
Edition 2019-11

Sound system equipment - Part 21: Acoustical (output-based) measurements
Edition 2018-12

Sound system equipment - Electroacoustic transducers - Measurement of large signal parameters
Edition 2011-03

Energy performance of lamp controlgear - Part 2: Controlgear for discharge lamps (excluding low-pressure mercury fluorescent lamps) - Method of measurement to determine the efficiency of controlgear
Edition 2022-03

Fibre optic communication subsystem test procedures - Part 2-9: Digital systems - Optical signal-to-noise ratio measurement for dense wavelength-division multiplexed systems
Edition 2009-04

Plasma display panels - Part 2-3: Measuring methods - Image quality: Defects and degradation
Edition 2009-11

Measuring relays and protection equipment - Part 181: Functional requirements for frequency protection
Edition 2019-04