Fibre optic interconnecting devices and passive components - Performance standard - Part 086-6: Non-connectorized single-mode bidirectional 1 490/1 550 nm downstream and 1 310 nm upstream WWDM devices for category O - Uncontrolled environment (IEC 61753-086-6:2010); German version EN 61753-086-6:2011
Edition 2011-09

Fibre optic interconnecting devices and passive components performance standard - Part 086-2: Non-connectorised single-mode bidirectional 1490/1550 nm downstream 1310 nm upstream WWDM devices for category C - Controlled environment (IEC 61753-086-2:2009); German version EN 61753-086-2:2009
Edition 2010-06

Piezoelectric, dielectric and electrostatic oscillators of assessed quality - Part 1: Generic specification (IEC 60679-1:2017); German version EN 60679-1:2017
Edition 2018-04

Process measurement and control devices - General methods and procedures for evaluating performance - Part 3: Tests for the effects of influence quantities (IEC 61298-3:2008); German version EN 61298-3:2008
Edition 2009-08

Plastics - Vocabulary (ISO 472:2013); Trilingual version EN ISO 472:2013
Edition 2013-06

Ultrasonics - Hand-held probe doppler foetal heartbeat detectors - Performance requirements and methods of measurement and reporting (IEC 61266:1994); German version EN 61266:1995
Edition 1996-06

Measurement of quartz crystal unit parameters - Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004); German version EN 60444-7:2004
Edition 2004-11

Sound system equipment - Part 21: Acoustical (output-based) measurements (IEC 60268-21:2018); German version EN IEC 60268-21:2018
Edition 2019-11

Semiconductor devices - Part 16-5: Microwave integrated circuits - Oscillators (IEC 60747-16-5:2013 + A1:2020 + COR1:2020); German version EN 60747-16-5:2013 + A1:2020
Edition 2021-08

Measurement of the Electrical Properties of Microwave Tubes; Part 3: Disk Seal Tubes
Edition 1978-04