ADC 800 ESMR, 850 Cellular, 1900 PCS manual Digitized RF, Description

InterReach® In-building Coverage Solution

800 ESMR, 850 Cellular, 1900 PCS

6 / 0 8 • 1 0 2 4 4 0 A E InterReach® In-building Coverage Solution

Digitized RF

InterReach ICS distributes wireless coverage digitally over optical fiber, which makes it the best choice for signal quality, architectural flexibility, and overall performance.

Fiber is completely immune to reception or generation of electromagnetic interference, making it easy to install alongside other wiring without fear of noise or crosstalk. By using digital optics, either single-mode or multi-mode fiber can be used without degrading signal quality. This allows users to utilize any dark fiber that may already be in place within the building and flat polished LC connectors.

Digital RF transport over fiber also offers the lowest possible noise level, regardless of the length of fiber. Digital transport is unaffected by long cable runs, splices and signal splits. Digital RF transport over fiber also enables complete flexibility of design. Digital RF transport systems split and add signals digitally, so the architecture of fiber cable runs can be optimized for each application, minimizing installation costs and time.

Coverage areas can be expanded by adding, or even daisy-chaining, system components. Multiple areas, floors, or even multiple buildings can be covered with uniform digital quality signals delivered to even the most remote antenna. Additional components can simply be plugged in. If the RF parameters have not changed, no additional optimization is required. Furthermore, digital RF transport provides greater flexibility for converging indoor and macro networks.

Description

InterReach ICS, offered for 800 ESMR, 850 Cellular, and 1900 PCS applications, transports 18- 25MHz of contiguous bandwidth.

The InterReach ICS system components include: a Digital Host Unit (DHU), optional Digital Expansion Units (DEU), and Digital Remote Units (DRU).

A DHU can feed either DRUs or DEUs. Digital Expansion Units can be daisy chained without affecting system performance*.

Each DHU and DEU is configurable with up to

six single-mode or multi-mode optical transceivers. Because the optical ports are independent of one another, single-mode and multi-mode fiber may be mixed and matched as needed between elements. For example, a host unit may feed five remotes with multi-mode fiber, and feed the sixth remote via single-mode fiber due to distance or to utilize available fiber in a facility. As requirements change and future growth is needed, additional transceivers and DRUs can be ordered and easily installed onsite. This modular approach provides optimum design flexibility, reduces the initial cost of an indoor wireless solution, and delays further investment until it is justified by growth. Likewise, any unused ports may simply be turned off without affecting any part of the system performance.

The DHU and DEU are AC powered. The DRUs are CAT3/5 powered. For distances greater than 500 meters, ADC offers a local power supply for remote power.

*The number of DEUs that can be daisy chained is limited only by the Noise Figure, which can be calculated using the formula 8 dB + (10 log N).

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