Optical DAS consists of donor units, optical fibers, service units, RF coaxial cables and DAS components and antennas.
Donor unit receives, filters and amplifies RF signal from base station, DAS or service unit, convert it to optical signal and transmits through optical fibers.
Service unit receives optical signal from donor unit and convert to RF signal, filters and amplifies RF signal and transmits through RF coaxial cable to the air over antennas.
Donor unit supports up to 4 optical branches. Each optical branch supports one service unit, or up to 8 daisy chained service units. Two optical ports can be used to loop up to 8 daisy chained service units, which will allow other service units working normally in case one service is out of power or optical fiber fails.
Each donor unit supports up to 4 optical branches (Star network topology)
Each donor unit optical branch supports up to 8 daisy chained service units (Daisy chain network topology)
Two donor unit optical branches can loop 8 daisy chained service units (Loop network topology)
A Sample System Architecture (Hybrid network topology)
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