Transmission systems and two-ports; measures for attenuation
Edition 1971-11

Communication cables - Specifications for test methods - Part 4-4: Environmental test methods - Resistance to solvents and contaminating fluids; German version EN 50289-4-4:2008
Edition 2008-08

Communication cables - Specifications for test methods - Part 4-5: Environmental test methods - Climatic sequence; German version EN 50289-4-5:2008
Edition 2008-08

Communication cables - Specifications for test methods - Part 4-7: Environmental test methods - Damp heat steady state; German version EN 50289-4-7:2008
Edition 2008-08

Communication cables - Specifications for test methods - Part 4-12: Environmental test methods - Vertical flame spread test on bunched small communication cables; German version EN 50289-4-12:2004
Edition 2005-02

Communication cables - Specifications for tests methods - Part 3-10: Mechanical test methods - Torsion and twisting; German version EN 50289-3-10:2004
Edition 2005-10

Communication cables - Specifications for test methods - Part 3-13: Mechanical test methods - Aeolian vibration; German version EN 50289-3-13:2003
Edition 2004-02

Telecontrol equipment and systems - Part 5: Transmission protocols; section 1: Transmission frame formats (IEC 60870-5-1:1990); German version EN 60870-5-1:1993
Edition 1994-07

Measurement of fiber optic elements - Part 4: Determination of diameters and thicknesses of optical fibers; Text in German and English
Edition 2014-08

Measurement of fiber optic elements - Part 2: Determination of spectral transmittance of light guides; Text in German and English
Edition 2012-09