User's Manual Part 1

Fusion Wideband Expansion Hub
Page 42 InterReach Fusion Wideband Installation, Operation, and Reference Manual
© 2013 TE Connectivity Ltd D-620616-0-20 Rev H • TECP-77-044 Issue 7 • May 2013
EXPANSIONHUBOVERVIEW
TheExpansionHubactsaninterfacebetweentheMainHubandtheRemoteAccessUnit(s)by
convertingopticalsignalstoelectricalsignalsandviceversa,asshowninFigure13.Italso
suppliescontrolsignalsandDCpow
ertooperatetheRemoteAccessUnit(s)aswellaspassing
statusinformationfromtheRAUstotheMainHub.
Figure13.
Expansion Hub in a Fusion Wideband System
Downlink Path: The Expansion Hub receives downlink (Band 1, 2, and 3) optical signals from the Main Hub using fiber optic
cable. It converts the signals to electrical and sends them to up to eight Remote Access Units (RAUs) using CATV cables. The
Expansion Hub also receives configuration information from the Main Hub using the fiber optic cable and relays it to the RAUs
using CATV cable.
Uplink Path: The Expansion Hub receives uplink (Band 1, 2, and 3) IF signals from up to eight RAUs using CATV cables. It
converts the signals to optical and sends them to a Main Hub using fiber optic cable.
The Expansion Hub also receives RAU status information using CATV cable and sends it and its own status information to the
Main Hub using the fiber optic cable.
RF1, 2, and 3
Downlink to Main Hub
Uplink from Main Hub
RF1, 2, and 3
Downlink to Main Hub
Uplink from Main Hub
Fusion Wideband
Main Hub
Fusion Wideband
Main Hub
RAU