User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 2: Description
Page 2-35
 2005, ADC Telecommunications, Inc.
(2) FAULT LED
(1) P OWER LED
Figure 2-33. RAN Chassis DC cPCI Power Supply
Table 2-24. DC cPCI P/S User Interface
REF
No.
USER INTERFACE
DESIGNATION
DEVICE FUNCTIONAL DESCRIPTION
1 Power LED Single-colored LED
(Green)
Status indicator turns green when power
supply has power.
2 Alarm LED Single-colored LED
(Yellow)
Status indicator turns yellow when power
supply has failed
7.6 RF Assembly Module (RFA)
The Radio Frequency Assembly (RFA) is used to amplify the forward path RF output signal,
receive the reverse path RF signals and amplify the signals with a low noise amplifier, duplex
RF signals and filter out-of-band emissions and signals. On the forward path RF signal passes
to the RFA from the Ran Up Converter (RUC) for amplification, filtering and duplexing and
output in the antenna port on the module. On the reverse path, signals are separated by the
duplexer, filtered, and amplified by a Low Noise Amplifier (LNA) which sets the noise figure
of the system. Signals are passed to the Ran Down Converter.
The RFA contains redundant power supplies. In the event that one supply fails, the other unit
will maintain power to the RFA and the power LED will be lighted.
There are several types of RFA’s depending on the band, number of power amplifier, and
signal combining using diplexers. The RFA’s may be used with the CXD standard and
extended battery cabinet. Other cabinet options are available as accessory items.