AFL's WDM900 Lightwave Test Set is intended for performance analysis in the DWDM test space, specifically for testing cell backhaul and Metro Ethernet access networks. Equipped with the patent-pending AFL Health Meter, the WDM900 is designed to enable users to find, analyze, document and report issues related to optical signal-to-noise ratio (OSNR), wavelength drift and channel power. It employs a solid state, no-moving-parts design for both field and indoor use.The AFL Health Meter is designed to validate each DWDM channel against user-defined pass/fail criteria and immediately tell the user the health of the network.