User's Manual

System Elements
Table 2-4. RHU 1200 Rear Panel Connectors
Add-on Control Transmits the control signals between the MA 1200 module and the
MA 850 and RHU 1000 modules.
From – receives control signals from the RHU 1000. Connected to
the RHU 1000 Add-on Control connector.
To – for configurations that include MA 850. Transmits control
signals to MA 850. Connected to the MA 850 Add-on Control
connector.
DL, UL Transmit the RF signals to- and from- the MA 1200 add-on module.
These ports are connected to the corresponding ports on the MA
1000 rear panel: DL to DL, UL to UL.
High RF service output port connected to the RHU 1000 rear-panel High
port.
2.2 MA 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 MA 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 MA NMS (Network Management System).
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). This
following sections describe the MA BU front and rear panels, including indicators and connectors.
MA 1000M Installation and Configuration Guide 11