The DR-14C-4 product incorporates a new digital encoding technology. This fiber optic system is available in 14-channels of unidirectional Contact Closure signals over one single-mode fiber. Meridian’s digital product line is incorporates plug-in personality circuit cards to easily configure number of Contact Closure channels on this system. The Contact Closure channels can be configured as either Normally Open (N.O.) or Normally Closed (N.C.). The functionality of the DR-14C-4 system are further enhanced by their compatibility with Meridian’s PC based SpectraSmart™ Network Management and Diagnostic Software system. SpectraSmart supervises the operating parameters of the transmission system such as the status on Digital carrier detect, voltages, temperatures, optical levels , Laser currents, Digital Power supply etc.