Optical Repeaters Transmit Only Desired Signals
•Brochure: Fiber Optic Repeater
Photonuum's RF repeaters and Distributed Antenna System (DAS) equipment are designed to provide indoor or outdoor coverage in a wide variety of operating environments and configurations.
Today in most wireless networks, technicians and engineers install inexpensive bi-directional amplifiers (BDAs), quickly discovering that the coverage area and overall signal levels offered are far less than what they wanted and expected. This is because so many undesired signals are consuming the RF power in the BDA so that little signal strength is left for in-band signals. As noted in Figure 1. our optical solutions provide filtering and transmit onlv the desired signals, so no valuable RF power is wasted. And the cost differential is negligible relative to a BDA, especially if external band-pass filters must be added to the BDA to make it reject out-of-band signals. Additionally, the only limitation in transmission distance over the fiber is a function of how much latency the network can tolerate.
Photonuum's fiber optic systems and repeaters offer optional remote alarming or a convenient RS-232 craft port providing technical support with remote monitor capability and immediate "health and status" data. The remote units can also be provisioned to dial telephone numbers with an alarm notification. A GUI (graphical user interface) driven software package continuously polls multiple repeaters for alarms and will alert the Network Operations Center (NOC) to an alarm dialed in from a repeater.
Photonuum repeaters can be very basic units or be provisioned with extensive software control of uplink and downlink power level control, making these more sophisticated units truly "plug and play," with a total automatic set-up routine. Less sophisticated BDAs offer automatic gain control (AGC), that vary the gain of the unit based on received RF signal levels. This AGC configuration works to defeat the power control already in place from the base station (BTS). Other vendor solutions offer manual attenuator switches that need to be adjusted by the installation technician. Our systems are software controlled repeaters and transmission equipment that start their set-up sequence automatically when the AC power is engaged. The units monitor their own RF output power and increase/ decrease gain in small increments until the optimal output power is achieved. Once the set-up sequence is complete, the unit WILL NOT continue to change its internal attenuator settings, leaving the BTS and mobile interconnectivity devices operating in their native states.
SOURCE: Photonuum
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•Brochure: Fiber Optic Repeater