
Introduction
– continued
Apr 2001
V02.03
25
SC
TM
4812ET RF and Power Cabinet Hardware Installation Manual
DRAFT
RF Cabinet Internal FRUs
Figure 1-6 shows the location of the Internal Field Replaceable Units. A
brief description of each Internal FRU is found in the following
paragraphs.
Figure 1-6: RF Cabinet Internal FRUs
DRDC/TRDC
LPA’s
CCP Fans
LPA Trunking
Backplane
5 RU Rack Space
RFDS
DC
Power
Dist.
Punch
Block
(back)
EBA
C–CCP Shelf
Combiner
Cage
Circuit
Breaker Panel
ETIB
FW00163
OPTIONAL AREA
Duplexer/Directional Coupler (DRDC)
The DRDC combines, in a single module, the functions of antenna
duplexing, receive band pass filtering, and surge protection.
TX Filter/RX Filter/Directional Coupler (TRDC)
The TRDC is the same as the DRDC but has a separate antenna
connector for TX and RX operation. The TRDC is not available in the
1.9 GHz band.
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