DIN EN 61290-4-1:2012 Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2011); German version EN 61290-4-1:2011
2017DIN EN 61290-4-1:2017-06 Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2016); German version EN 61290-4-1:2016 / Note: DIN EN 61290-4-1 (2012-04) remains valid alongside this standard until 2019-10-31.
2017DIN EN 61290-4-1:2017 Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2016); German version EN 61290-4-1:2016
2012DIN EN 61290-4-1:2012 Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2011); German version EN 61290-4-1:2011