... routing and continuity checking in optical networks.Other fiber optic measurementsKey Features – Pen-Type Visual Fault Locator2. ... 1Central wavelength650nm±10nmEmitter typeFP-LD Output powerOptional choice for 5mw, 10mw,20mw,30mw,40mw,50mwOptical connector2.5mm ... VFL650-1Central wavelength650nm±10nmEmitter typeFP-LDOutput powerOptional choice for 5mw, 10mw,20mw,30mw,40mw,50mwOptical connector2.5mm ...