Section 2.1 System Overview - ADC InterReach Fusion Installation, Operation And Reference Manual

System Overview
2-2
CONFIDENTIAL
The Fusion system supports three configurable bands:
• Band 1 in 35 MHz and can be configured for 850 MHz, or 900 MHz.
• Band 2 in 75 MHz and can be configured for 1800 MHz, 1900 MHz, or 2100 MHz
Both bands support all protocols.
Fusion remote access units contain combinations of Band 1, Band 2, and Band 3
frequencies to support various world areas, that is 800 MHz/900 MHz/1900MHz
for North America or 900 MHz/2100 MHz and 900 MHz/1800 MHz for Europe
and Asia. Refer to Figure 2-7 on page 2-8 for a specific list of these RAU fre-
quency combinations.
• Band 3 (only used for the North American FSN-809019-2 RAU) whose Band 3 is
a 6 MHz sub-band of the 35 MHz Band with Band 1 being an 18 MHz sub-band of
the 35 MHz Band.
Key System Features
• Multi-Band, supports two or more full band frequencies for spectrum growth.
• Superior RF performance, particularly in the areas of IP3 and noise figure.
• High downlink composite power and low uplink noise figure enables support of
a large number of channels and larger coverage footprint per antenna.
• Software configurable Main and Expansion Hubs allow the frequency bands to
be configured in the field.
• Either single-mode or multi-mode fiber can be used, supporting flexible cabling
alternatives (in addition to standard CATV 75 Ohm cabling). You can select the
cabling type to met the resident cabling infrastructure of the facility and unique
building topologies.
• Extended system "reach." Using single-mode fiber, fiber runs can be a long as 6
kilometers (creating a total system "wingspan" of 12 kilometers). Alternatively,
with multi-mode fiber, fiber runs can be as long as 500 meters.
• Standard 75 Ohm CATV cable, can be run up to 150 meters for RG-59 cable
(170 meters for RG-6; 275 meters for RG-11 using CommScope 2065V, 2279V,
and 2293K cables).
• Flexible RF configuration capabilities, including:
• System gain:
– Ability to manually set gain in 1 dB steps, from 0 to 15 dB, on both down-
link and uplink.
• RAU:
– RAU uplink and downlink gain can be independently attenuated 0 or 10 dB.
– Uplink level control protects the system from input overload and can be
optimized for either a single operator or multiple operators/protocols.
InterReach Fusion Installation, Operation, and Reference Manual
D-620610-0-20 Rev D