User's Manual

Introduction
P/N 709C010701
Page 15
1.2.1 Signal Path
On the DL, combined RF signals (from up to four supported services) from the Radio Interface
Unit (RIU) are converted into optical signals by the Optical Control Hub (OCH). The optical
signals are then transmitted to the GX at the remote site via optical fiber. The signals are
filtered and amplified at the GX and transmitted through the service specific output ports to the
broadband antennas.
On the UL, GX converts the RF signals transmitted from the service antennas into optical
signals. The signals are transmitted via optical fiber to the OCH-GX which then converts the
optical signals back to RF signals.
The optical DL and UL signal are transmitted in a single optical fiber based on the WDM
technology.
GX Functional Block Diagram
Figure 1-3
1.3 System Monitoring and Management
The MobileAccessGX-Quad Remote Unit is centrally managed via the MobileAccess SC-450
Controller.
NOTE: The GX-Quad solution is supported by SC-450 v5.4 and higher.
MobileAccessGX-Quad is not connected directly to the controller; it is connected to the OCH-GX
element (that is connected to the controller). Thus, the controller monitors views and manages
the GX-Quad via the OCH-GX, hosting the GX unit.
The following shows the Config(uration) tab of the selected GX unit. The system configuration
and management is described in the SC-450 UM (v5.4 and
higher).