User Manual

ADCP-75-192 • Issue 1• December 2005 • Section 1: Overview
Page 1-13
 2005, ADC Telecommunications, Inc.
3.7.9 DC Power Entry Card (DPEC)
The DPEC is used to distribute DC power to the cPCI power supplies in the RAN when
supporting battery backup. It has a built in EMI filter and fuse holder and provides an access
point for fan monitoring and control.
3.7.10 CompactPCI RAN Power Supply (cPCI P/S)
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 supports redundant
supply configurations.
3.7.11 RF Assembly
The RF Assembly (RFA) consists of the power amplifier (PA), power supply, fans, duplexers
and RFA interface controller. RF assemblies are PCS, Cellular and SMR 800/900 bands.
3.7.12 Internal Battery backup (BAT1) 1-Hour
The Digivance CXD has an option for an internal battery back-up located inside the Standard
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.
3.7.13 Extended Internal Battery Backup (BAT2) 2-Hour
The Digivance CXD has an option for an extended internal battery back-up through use of the
Extended CXD RAN Cabinet with a separate compartment for the batteries. 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.
3.7.14 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
support the desired coverage objectives. Proper antenna selection and the mounting installation
is the responsibility of the customer.
When using a customer supplied antenna, they should meet or exceed the following antenna
specifications: