NF C93-846-13*NF EN IEC 62129-3:2019 Calibration of wavelength/optical frequency measurement instruments - Part 3 : optical frequency meters internally referenced to a frequency comb
2019NF C93-846-13*NF EN IEC 62129-3:2019 Calibration of wavelength/optical frequency measurement instruments - Part 3 : optical frequency meters internally referenced to a frequency comb