The FTB-5320 is the perfect tool for system operators facing new DWDM testing challenges. The bandwidth squeeze has been the driving force behind the deployment of DWDM in the long-haul market and is the reason for its further expansion into the metropolitan arena. Specifically designed for DWDM testing, the easy-to-use FTB-5320 Multi-Wavelength Meter is among the best on the market for absolute wavelength accuracy.