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Electromagnetic compatibility of technical equipment. Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz. Part 2-1. Mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz intended for use in residential, commercial and light industrial environments. Immunity requirements and test methods
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Optical fibres. Part 1-45. Measurement methods and test procedures. Mode field diameter
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Audio-, video and related equipment. Determination of power consumption. Part 6. Audio equipment
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Information technology. Open systems interconnection. Basic reference model. Part 2. Security Architecture
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