Installation Instructions

Ensemble Communications Inc.
Preinstallation 3-3
Installation
Requirements
Size and access
The base station chassis mounts in a standard 19-inch (48-cm) rack
or cabinet and requires 10 rack units (RUs) of space (17.5 inches (44
cm)), 24 inches (60 cm) deep. Allow adequate clearance around the
base station to permit access for installation of cards, assemblies,
and modules. Verify there is sufficient room to route and attach
cables to the rear of the unit. The unit requires clearance of at least
30 inches (76 cm) in the front and 24 inches (60 cm) in the rear.
Floor loading
A fully equipped base station cabinet with a -48 VDC power
system and batteries can weigh up to 800 pounds (360 kg). Verify
the cabinet and power plant do not exceed the floor loading limits.
Temperature allowances
Verify the indoor location meets the following temperature
allowances, including ventilation enough to dissipate heat loads of
up to 1750 watts per fully equipped base station chassis:
Storage -40° to 60° C (-40° to 140° F)
Operation 0° to 50° C (32° to 122° F)
Recommended 10° to 30° C (50° to 86° F)
Power Requirements The base station requires a -48 VDC power source, which can be
supplied by either a -48 VDC power distribution system or a local
-48 VDC power supply. The local power source should be capable
of supplying a minimum of 50 amps.
For redundancy, each base station chassis requires two power bus
connections (A and B). These connections are on the backside of
the chassis in the Power Distribution Frame (PDF).
Note The 50 amp power supply requirement is based on the power required
for a single chassis, fully populated, in an ATM configuration.