User Manual

BTS Overview68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

1-17

RF Cabinet Internal FRUs

Figure 1-3 shows the location of the Internal Field Replaceable

Units (FRUs). A brief description of each Internal FRU is found in the

following paragraphs.

Figure 1-3: RF Cabinet Internal FRUs

DRDC LPAs

CCP Fans

LPA Trunking

Backplane

5 RU Rack Space

RFDS

Power

Dist.

Punch

Block

(back)

EBA

C-CCP Shelf

Combiner

Cage

Circuit

Breaker Panel

ETIB

FW00163

OPTIONAL AREA

Duplexer/RX Filter Directional Coupler

The DRDC combines, in a single module, the functions of antenna

duplexing, receive band pass filtering, and surge protection (see

Figure 1-7).

Combiner Cage (2:1, 4:1, or Band pass Filter)

The Combiner Cage holds the transmit band pass filters, 2:1 combiners,

or 4:1 combiners, depending on system configuration.