Preface Material
MA1000 Installation and Configuration Guide
9
Table
2-4. RHU Add-on Rear Panel Connectors
Add-on Control
Transmits the control signals between the Add-on module and the
860 and 1000 RHU modules:
•
From – receives control signals from the 1000 RHU. Connected
to the 1000 RHU Add-on Control connector.
•
To – for configurations that include 860. Transmits control
signals to 860. Connected to the 860 Add-on Control connector.
DL, UL
Transmit the RF signals to- and from- the Add-on module. These
ports are connected to the corresponding ports on the 1000 rear
panel: DL to DL, UL to UL.
High
RF service output port connected to the 1000 RHU rear-panel High
port.
2.2
Base Units
The BUs (Base Units) perform RF to optical conversion of the signal on the BTS/BDA side. Each
can support up to two services (provided by the same operator). Two models of BUs are
available: four-port unit – supporting four RHUs, and eight-port unit supporting up to eight RHUs.
The RHU models correspond to the services supplied through the BUs.
The BU (and all the corresponding remote units) may be remotely monitored and managed via
the 410, 430 and SC-450.
The BUs are usually installed in the telecom room adjacent to the BTS/BDA signal source. RF
ports on the rear panel provide interface to the BTS side (through connection to RIU or passive
interface), while optic ports on the front panel provide interface to the RHUs (Remote Units). The
following sections describe the BU front and rear panels, including indicators and connectors.
