User's Manual
USER MANUAL FOR RD-8132
RD-8132 QI
Copyright - refer to title page
Page 6
ENU Status : 1-0-0
1 EQUIPMENT DESCRIPTION
The RD-8132 CDMA repeater is designed for CDMA850 networks. Band-specific linear MCPA and filtering
effectively amplifies the desired BTS carriers and provides superior out-of-band rejection. The unit can
incorporate two adjustable bandwidth segments. Remote configuration and surveillance is possible
through Comba’s remote control and monitoring system via PC or wireless modem to the OMT/OMC.
Internal Li-ion backup battery ensures alarm signals are sent out during power failure. The unit comes in a
sealed, cast aluminum enclosure, suitable for operation in all weather conditions.
This is an ideal product for outdoor coverage, especially for rural sides and mountain areas without signal
coverage. Site location shall be selected with care to avoid radiation effect to human being though this
product is meeting FCC regulation requirement. Any installation, adjustment, maintenance and repair of
the equipment must only be carried out by trained, licensed engineer.
1.1 BLOCK DIAGRAM
LNA1
LNA2
Mobile
Ant
Donor
Ant
Mobile
Power
Supply
Alarm
Indicator
Main Control Unit
External
Power
OMT
Li-ion
BATT
Modem
DT
MT
OMT
Computer with
Data card
Wireless
Modem
OMC
PA1
PA2
DL Band Selective
Module
DL Band Selective
Module
UL Band Selective
Module
UL Band Selective
Module
BTS
Figure 1: Block Diagram
In the downlink, the signal from the BTS is divided into RX/TX by duplexer in DT end and sent to LNA1,
then band selective module for selecting desired signals, followed by PA1 for amplifying the signal, and
then to duplexer in MT terminal; finally the signals are sent to the service antenna for signal coverage.
In the uplink, the mobile signals are received by the service antenna. Divided in RX/TX by the duplexer in
MT terminal and followed by LNA2, then band selective module for selecting desired signals, followed by
PA2 for amplifying. After the duplexer of DT end, the signals are sent to the donor antenna for
transmission back to the BTS.