User's Manual

3 Sector Duplexed
68P64115A19–4
Mar 2003
1X SC 4812T-MC BTS Hardware Installation - Software Release R2.16.1.x
CONTROLLED INTRODUCTION
4-20
3 Sector Duplexed
Objective
The objective of this procedure is to install an external CDMA RFDS
into a 3-Sector Duplexed site. This configuration covers all indoor BTS
types.
Cabling Diagram
Figure 4-10 shows the cabling from an RFDS to a 3-Sector Duplexed
BTS configuration without regard to BTS type or band. Table 4-15 lists
the ports for the Directional Couplers and RFDS, and instructions for
installing the RF cables are shown in Table 4-16.
ASU2
ASU1
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
123456
1234 5 6
RX Pri / TX1
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
DIRECTIONAL
COUPLER
FWD REV
LIGHTNING
ARRESTOR
ANT
FWD
REFL
TO BTS
Sector 1
TX1 RX Pri
Figure 4-10: 3–Sector Duplexed Cabling Configurations
FWD
REFL
TO BTS
Sector 1
TX2 * RX Div
TO BTS
Sector 2
TX1 RX Pri
TO BTS
Sector 2
TX2* RX Div
TO BTS
Sector 3
TX1 RX Pri
TO BTS
Sector 3
TX2* RX Div
123456
1234 5 6
RX Div / TX2* RX Pri / TX1
RX Div / TX2*
RX Pri / TX1
RX Div / TX2*
SECTOR 1 SECTOR 2 SECTOR 3
* TX2 – FOR SINGLE FRAME UNUSED TX PORTS ON THE
DUPLEXER MUST BE TERMINATED WITH A 50 OHM LOAD.
FOR EXPANSION CONNECT CABLES HERE
LEGEND:
= EXISTING EQUIPMENT
DUPLEXER
ANT
TX RX
DUPLEXER
ANT
TX RX
DUPLEXER
ANT
TX RX
DUPLEXER
ANT
TX RX
DUPLEXER
ANT
TX RX
DUPLEXER
ANT
TX RX
4