User Manual

ADCP-75-192 • Issue D • October 2005 • Section 1: Overview
Page 1-8
 2005, ADC Telecommunications, Inc.
3.6.8 DC Power Entry Card (DPEC)
The DPEC is used to distribute DC power to the cPCI power supplies in the RAN and is used
when the battery backup option is used.
3.6.9 CompactPCI RAN Power Supply (RPS)
The CompactPCI (cPCI) Power Supplies provide +/-12V, 5V and 3.3 V DC power to the cPCI
backplane for use by the RAN modules. These units are hot swappable and can be redundant
when used in pairs.
3.6.10 RF Assembly
The RF Assembly (RFA) consists of the Power Amplifier (PA), A/C Power Supply (ies), Fans,
duplexers and RF assembly Interface Controller (RIC). the dual-band 800/900 RF assembly
does both SMR800 and 900 bands.
3.6.11 Fuses
There are fuses in the APEC and DPEC that protect the RAN electronics:
3.6.12 Internal Battery backup (BAT1) 1 Hour
The Digivance CXD has an option for an internal battery back up is located inside the CXD
RAN cabinet. It is positioned in the space of a RFA and is used to provide short duration
power backup to the RAN. A cabinet using the internal battery backup option can only support
one single- or dual-band RFA. .
3.6.13 Extended Internal Battery Backup (BAT2) 2 Hour
The Digivance CXD has an option for an extended internal battery backup option through use
of a custom cabinet with an auxiliary space for the battery module. A cabinet using the
extended backup option can support two single- or dual-RFA’s and can provide up to two
hours of battery backup time.
3.6.14 Antenna (ANT)
The Digivance CXD RAN may be deployed and installed on a power distribution pole, on a
building wall, on a water tank, or on a rooftop, or within a building environment. ADC can
supply a number of antenna options for the Digivance CXD as accessory items. Antenna(s)
may be mounted on a facade, supporting member, wall or rooftop pedestal mount. Installations
may use conventional omni-directional or directional antenna, in either a sector or quasi-omni
antenna configuration, depending on the site’s coverage objective and design. When designing
a network, the azimuth and elevation beamwidths would be selected by the RF designer to