DIN EN IEC 61744:2023-12 光纖色散測試儀的校準(zhǔn)(IEC 61744:2023);德文版 EN IEC 61744:2023
Calibration of fibre optic chromatic dispersion test sets (IEC 61744:2023); German version EN IEC 61744:2023 / Note: DIN EN 61744 (2006-10) remains valid alongside this standard until 2026-05-09.