User's Manual

JUNI JF43-E1900/CFN03
CDMA FIBER FED REPEATER OPERATIONS MANUAL
Version 1.17 ⓒ J
uni America Inc. Page 13 of 88
2. System Description
2.1 FFR System
The JF43 FFR is made up of a main unit (DHU) and a RU. The DHU and RU are
divided into modules to allow easy operation and maintenance. It can operate even in
the harshest environmental conditions due to its durable NEMA 4X casing.
TX0/RX0
TX1/RX1
BTS
BTS Ant.
-30 or -20dB
BTS Ant.
D/C
D/C
Cable Loss
-2~-5dB
TX1
Duplexer
Optic
O/E
(LD)
E/O
(PD)
Remote
PA
LNA
LNA
BPF
BPF
Optic AGC
-30 or -20dB
Duplexer
RX1
TX1
O/E
(LD)
E/O
(PD)
AGC(LD,PD)
SAW
Donor Optic Cavity
Optic cable
15 miles_max
SAW
SAW
Modem
Modem Ant.
Local
p-Det
T/RX Drive
RX
Att.
Att.
Local
Com.
TX
RX1
Optic
Combiner
(-10dB)
Combiner
(-10dB)
[Figure 2.1] System Block diagram
2.2 Donor Unit
This section describes the main components of the DHU, the functions performed by
the components and the user interface.