The FILT-S3A-2050-8/12/16 series of fiber optic transmitters allow the operator to distribute DTH/DBS signals from a single satellite dish to multiple locations via single mode fiber. The transmitter is available in 8, 12, and 16 output versions to accommodate a variety of MDU topologies. The unit features automatic gain control (AGC) on the satellite input to help ensure optimum input levels with changes in weather. The transmitter is equipped with two LED indicators, one for power on (green) and the other for a low RF input alarm (red). For remote monitoring, a TTL based alarm monitor is provided on the rear panel. The alarm will trigger with either a low RF input; optical or DC failure. An alarm condition results in the monitor output going low (0 VDC). Under normal operating conditions the monitor output is 5 VDC. All three versions of the transmitters are in a single height, 1.75″ high, 19″ rack mount aluminum chassis for easy installation into any headend. Switched LNB power is multiplexed on the RF input connector, eliminating the need for external power inserters.