User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 2: Description
Page 2-11
 2005, ADC Telecommunications, Inc.
Figure 2-10. CXD RAN Extended Cabinet
• Provides a point for terminating the coaxial antenna cable, the fiber optic cable, the
AC power cable, and ground cable.
• Provides AC power surge protection
• Provides lightning protection
• Provides limited storage for fiber optic pigtails.
The CXD RAN cabinets are weather-tight but contact with salt-air mist should be avoided as it
may degrade the MTBF of the product. The cabinet can be mounted from a flat-vertical
surface, on a wooden utility pole (requires wood pole-mount kit) or from a metal street pole
(requires metal pole-mount kit). Slots within the RAN cabinet are designated for either the
RAN Chassis or RFA modules.
5 ELEMENTS COMMON TO HUB AND RAN
This section describes the various modules, controls and indicators that are common between
the Hub and RAN.
5.1 Central Processor Unit (CPU)
The Hub Central Processor Unit (CPU) installs into the Digital Chassis. There are two CPU
types used in the CXD system, Hubmaster and Slave CPUs. The Hubmaster manages its own
local hardware as well as controlling the overall system. The Slave CPUs only manage their
local hardware. All Slave CPUs communicate to the Hubmaster over a network connection.
Figure 2-11 shows the relationship between Hubmaster and Slave CPUs.