Fusion Main Hub; Fusion Main Hub Overview; Section 3.1 Fusion Main Hub Overview - ADC InterReach Fusion Installation, Operation And Reference Manual

Fusion Main Hub Overview

Downlink Path: The Main Hub receives up to 3 individual (Band1, 2, or 3) downlink RF signals from a base station, repeater,
or FlexWave Focus system using 50 Ohm coaxial cable. It converts the signals to IF then to optical and sends them to up to
four Expansion Hubs using fiber optic cable.
The Main Hub also sends OA&M communication to the Expansion Hubs using the fiber optic cable. The Expansion Hubs, in
turn, communicate the OA&M information to the RAUs using CATV cable.
RF1, 2, and 3
Downlink to Main Hub
Uplink from Main Hub
RF1, 2, and 3
Uplink Path: The Main Hub receives uplink optical signals from up to four Expansion Hubs using fiber optic cables. It con-
verts the signals to IF then to RF and sends them to the respective Band1, 2, or 3 base station, repeater, or FlexWave
Focus system using 50 Ohm coaxial cable.
The Main Hub also receives status information from the Expansion Hubs and all RAUs using the fiber optic cable.
3-2
CONFIDENTIAL
Main Hub in a Fusion System
Figure 3-1
Downlink from Main Hub

Fusion Main Hub

Figure 3-2 shows a detailed view of the major RF and optical functional blocks of the
Main Hub.
NOTE: The Fusion One Port Main Hub (PN: FSN-1-MH-1P) configuration
is a cost reduced version of the Fusion Main Hub and supports only one
Expansion Hub (up to 8 RAUs).
InterReach Fusion Installation, Operation, and Reference Manual
Fusion Expansion Hub
Uplink to Main Hub
RAU
D-620610-0-20 Rev D