Fibre optic communication subsystem test procedures - Part 2-1: Digital systems - Receiver sensitivity and overload measurement (IEC 61280-2-1:2010); German version EN 61280-2-1:2010
Edition 2011-01

Integrated Services Digital Network (ISDN) - Access digital section for ISDN primary rate; English version ETS 300233/A1:1995
Edition 1995-10

Fibre optic communication subsystem test procedures - Part 2-9: Digital systems - Optical signal-to-noise ratio measurement for dense wavelength-division multiplexed systems (IEC 61280-2-9:2009); German version EN 61280-2-9:2009
Edition 2009-12

Consumer audio/video equipment - Digital Interface - Part 7: Transmission of ITU-R BO.1294 System B (IEC 61883-7:2003); German version EN 61883-7:2003
Edition 2003-08

Integrated Services Digital Network (ISDN) - Primary rate User-Network Interface (UNI) - Part 2: Conformance test specification for interface IA and IB; English version ETS 300011-2:1998
Edition 1998-12

Non-broadcast video recorders; time base stability (IEC 60756:1991); German version EN 60756:1993
Edition 1993-11

Integrated Services Digital Network (ISDN) - Access digital section for ISDN basic rate; English version ETS 300297:1995/A1:1996
Edition 1996-10

Digital audio interface - Part 4-4: Professional applications - Physical and electrical parameters (IEC 60958-4-4:2016); German version EN 60958-4-4:2016
Edition 2017-01

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 1: Measurements common to terrestrial radio-relay systems and satellite earth stations; section 4: Transmission performance (IEC 60835-1-4:1992); German version EN 60835-1-4:1995
Edition 1995-04

Transitions, pulses and related waveforms - Terms, definitions and algorithms (IEC 60469:2013); German version EN 60469:2013
Edition 2014-02