The AQ3550 Optical Switch Box from Yokogawa Test&Measurement is a 12-channel OSW that, when paired with an optical time domain reflectometer, improves workflow efficiency. In this video, we demonstrate how to switch channels on an AQ3550 from the screen of an AQ1210 OTDR for quick and easy measurement of fiber optic cable. Please note that product specifications may change without notice due to firmware updates, etc. For the most up-to-date information, please visit the firmware download page.