Proposal from the secretary of SC 86B: IEC 61300-3-31: Examinations and measurements - Coupled power ratio measurement for fibre optic sources

Reciprocating internal combustion engines - Measurement method for exhaust silencers - Sound power level of exhaust noise and insertion loss using sound pressure and power loss ratio

IEC 62047-21 Ed.1: Semiconductor devices - Micro-electromechanical devices - Part 21: Test method for Poisson's ratio of thin film MEMS materials

IEC 62047-21 Ed.1: Semiconductor devices - Micro-electromechanical devices - Part 21: Test method for Poisson's ratio of thin film MEMS materials

Comments received on 46A/431/NP (Coaxial cables for use in cabled distribution networks - Part 2-18: Test for relative propagation velocity (velocity ratio))

IEC 61280-2-2 Ed. 4.0: Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement

Proposal of the German NC: IEC 60684-3-247: Flexible insulating sleeving - Heat-shrinkable polyolefin sleeving, dual-wall not flame retarded, shrink ratio 3:1

Future IEC 60684-3-205: Flexible Insulating Sleeving - Part 3: Specifications for individual types of sleeving - Sheet 205: Heat-shrinkable polychloroprene sleeving, flame retarded, shrink ratio 1,7:1

IEC 62558 Ed.1: Ultrasonics - Real-time pulse-echo scanners - Phantom and method for automated evaluation and periodic testing of 3-D distributions of signal-to-noise ratio using voids

IEC 60684-3-271 Ed. 3.0: Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 271: Heat-shrinkable elastomer sleevings, flame retarded, fluid resistant, shrink ratio 2:1