概要（Overview）

The 81626B optical power head offers precision power measurements within a -70 to +27 dBm range, featuring exceptionally low PDL and spectral ripple uncertainties, typically ±0.002 dB. It boasts optional calibration for ±2.5% uncertainty enhancement. Designed for versatility, it includes a large area detector and a flexible remote head, accommodating various fiber connectors like MT ribbon and bare fibers. Additional features encompass adjustable averaging times, auto-ranging, and extensive data logging capabilities.