User's Manual

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4.2.7. Function of Modules
No Module Description
1
[RFAGC]
Divides RF signal to 850MHz, 1900MHz and
modem signal, and amplify the lossy RF signal
due to optic cable.
2
[RFBS]
Controls the gain of FWD output signal, filtered
FWD band and perform the ALC function. The
module output is sent to HPA.
3
[SOU]
Converts E/O (or O/E) of FWD and RVS signals.
Wavelength: TX 1550[nm], RX 1310[nm]
4
[FSK Modem]
Data modem for RU and MHU communication
RU → MHU frequency: 340MHz
MHU → RU frequency: 360MHz
5
[RRCOM]
Combines RF signal(850MHz and 1900MHz) and
data signal, and provides the combined signal to
optical module in order to convert E/O.
6
[RRBS]
Amplifies RVS CDMA signal, select the filtering
band and control the RVS path gain of RU.
7
[RRLNA]
A low noise amplifier module for RVS CDMA
signal. RRLNA amplify the CDMA Rx signal with
low noise and high gain. It has 20dB coupling
port compared to the output of the module. And
built-in local oscillator to check reverse path gain.