Additional Features: Wavelength Range: 480 to 1650 nm Wavelength Absolute Accuracy: ±2 ppm Max Input level: +10 dBm Optical Input: 9.5/125 um SM fiber, 50/125 µm GI fiber Featuring the legendary craftsmanship from Advantest, the Q8326 is a optical wavelength meter capable of accuracy and good resolution measurement at the central wavelength from laser diodes (LD) for DWDM applications. AssetRelay recommend this optical wavelength meter for starter labs.