This Part of IEC 61282 provides guidance for the testing of multi-fibre cable, multimode or single-mode, terminated with plugs described in IEC 61754‑7 (all parts) (multiple-fibre push on – MPO). Guidance is provided on the measurement of attenuation, polarity, length and optical return loss. The cabling can be installed in a variety of environments, including residential, commercial, industrial, and data centre premises, and possibly in outside plant environments.