The multi-mode fiber-optic receiver system incorporates digital encoding technology. This fiber-optic module transmits 8 channels of audio (600 ohms, balanced) over one fiber. This is multi-mode fiber system. Meridians digital product line incorporates plug-in personality signal cards to easily configure a wide variety of module types. The DT/DR-8A-0 product is fully compatible with Meridians PC based SpectraSmart network management and diagnostic software system. SpectraSmart supervises the operating parameters of the transmission system such as the status on video levels, sync, digital carrier detect, voltages, temperatures and optical levels.