Variable Attenuator: FVA-3100   The fully programmable FVA-3100 Variable Attenuator, ideal for single mode and multimode applications, enables highly accurate automated BER testing. It comes with standard GPIB and RS-232 interfaces. The BW and BWM configurations provide excellent WDM-range spectral uniformity (± 0.1 dB), allowing you to maintain constant attenuation values throughout the complete WDM spectrum when characterizing EDFAs or subsystems.       Key features · Spectral resolution of 0.1 nm · Typical insertion loss of < 1.5 dB · First-class repeatability · Optional monitor output   Copyright @ i-Tech Group Inc. All Rights Reserved.