Scratches and stains on optical-fiber ferrule end faces can have a negative impact on transmission quality. Connecting the G0306B to the Network Master MT1000A/MT1100A series, ACCESS Master MT9083x2 series, Network Master MT9090A (μOTDR module) series or a Windows® PC displays provides a safe way to view, analyze and document connector end face condition and quality. This function is useful for determining whether a ferrule end face is clean, or whether connector replacement is required due to the presence of scratches