AR Standard Repeater Sub Unit Overview
1-6 044-05250 Rev B
Directional Coupler (DC)
DC units are used as antenna signal directional couplers. They are located on the left and
right side in the lower part of the cabinet if a test port (TEST –30 dB) or an antenna port (MS
–20 dB) for an internal RF modem is required. Some repeater configurations lack a DC in the
DL, UL or both directions.
Low Noise Amplifier (LNA)
LNAs are used as uplink and downlink low noise branch amplifiers. They are located in the
upper part of the cabinet or in equipped high covers. LNA/UL is located to the left and LNA/DL
to the right. Some repeater configurations lack LNAs in the DL, UL or both directions.
Duplex filter (DPX)
DPXs are located on the cover plate over the amplifier boards.
Fiber Optic Unit (FOU)
The FOU is an add-on unit for the various repeater models. In the simplest form, the FOU is a
metal plate on which a FON PCBA, a DPX and fiber optic connectors are assembled. It can
also be configured with combiners, splitters and WDMs to obtain a desired combination of
several branches with double or single fiber. The FOU is used in the BMU, RMU and FOR and
is mounted on top of the cover plate in the upper part of the repeaters.
Fiber Optic Node (FON)
The FON is a bi-directional electrical/optical signal converter and a node in either a wire
network or a fiber network. It has functionality for:
• Electrical and optical signal supervision
• Internal and external alarm handling
• RS232 interface for local PC control via an O&M software (OM-Online)
• Remote control via an O&M software (OM-Online or OMS)
• Interface for RCU
• Interface for WLI, wire network
• Interface for FLI, fiber optic network
• Battery backup with charger
The FON can be installed in all Powerwave repeaters
Power Supply Unit (PSU)
A PSU is located in the lower center of the cabinet and, if configured, in the lower center of the
high cover.
Remote Control Unit (RCU)
The RCU is an optional communication unit for remote control of repeaters via PSTN or RF
modems. RCU types and details are described on page 4-11.
Combiner unit (CMB)
CMB combiner units are used to combine two different bands. CMB units are located on the
cover plate over the amplifier boards.
Alarm Interface PCBA (ALI) and Remote Control Interface PCBA (RCI)
The ALI handles alarms and alarm communication. It is replace with an RCI if an RCU is used
and provides an interface between the CU and an RCU for remote communication via modem.
The RCI also handles alarms and alarm communication. Either unit is located in the lower left
part of the shielded DIA frame.
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