Electric and optical fibre cables. Test methods for non-metallic materials. Part 509. Mechanical tests. Test for resistance of insulations and sheaths to cracking (heat shock test)
Energy effectiveness. Glandless circulators. Part 1. General requirements and procedures for testing and calculation of energy effectiveness index (EEI)
Transmission of audio and/or video and related signals using infra-red radiation. Part 3. Transmission systems for audio signals for conference and similar systems