Equipment Description; Sr-1910 Functional Block Diagram - Comba Telecom SR-1910 Installation Manual

2 EQUIPMENT DESCRIPTION

2.1 SR-1910 FUNCTIONAL BLOCK DIAGRAM

Donor
ANT
BTS
OMT
Computer with
Data card
Wireless
Modem
OMC
In downlink, the BTS signals are received by donor antenna of the repeater. After the duplexer, the signals
are sent to the LNA for pre-amplification, followed by band filtering through the Frequency Selection (FS)
Module. The power amplifier (PA) will then amplify the band to the desired output power before entering the
duplexer to share a common service antenna with uplink signals path.
In uplink, the mobile signals are received by the service antenna. After the duplexer, the signals are sent to
the LNA, FS and PA modules. After combining with the downlink signals in the duplexer, the uplink signals
are sent to the donor antenna for transmission back to the BTS.
The FS and PA modules are usually integrated into one module called FSA module.
SR-1910 QI
ENU Status : 1-1-1
INSTALLATION GUIDE FOR SR-1910
LNA1
DPX1
DT
PA2
Alarm
Indicator
Modem
Figure 2: SR-1910 functional block diagram
Copyright - refer to title page
PA1
DL FS Module
DPX2
ULFS Module
LNA2
Power
Main Control Unit
Supply
External
OMT
Power
Service
ANT
MT
Mobile
Li-ion
BATT
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