INSTALLATION GUIDE FOR RX-4122
ENU STATUS : 1-0-1
Copyright - refer to title page
Page 12
2.3
EQUIPMENT CONSTITUTION
The typical PS BDA unit consists of the following components:
Downlink Power Amplifier (DPA):
It provides power amplification for DL branches.
Uplink Power Amplifier (UPA):
It provides power amplification for UL branches.
Main Control Unit (MCU):
The MCU is used to monitor and control the operation of the repeater. It also
provides the communication interface for remote control and status
indication. LED indicators provide the
operation status of the MCU.
Downlink Filter:
The filter is used to restrain the uplink signals to achieve a better isolation between downlink
path and uplink path, to make sure the device can work in a normal duplex mode.
Uplink Filter:
The filter is used to restrain the downlink signals to achieve a better isolation between downlink
path and uplink path, to make sure the device can work in a normal duplex mode.
Digital Integrated Module
: Consists of RF module, digital process module and monitoring modules. The RF
module amplifies and converts the RF signal to IF signal. The Digital process module converts the IF signal into
baseband signal via AD conversion and extraction, and filtering. After that, the IF signal will be amplified and
converted to an RF signal by the RF module for RF filtering and amplification. The Monitoring module monitors
and controls the system parameters and it is the interface for both remote monitoring and local commissioning,
and at the same time control the charge and discharge of the backup battery.
Power Supply Unit (PSU):
The PSU converts the input voltage into a stable DC supply
to provide power for
the internal functional modules.
