Installing Raus; Installing Passive Antennas - ADC InterReach Fusion Installation, Operation And Reference Manual

Fusion Installation Procedures
7.4.3
7-32
CONFIDENTIAL

Installing RAUs

CAUTION: Install RAUs in indoor locations only. Do not con-
nect an antenna that is installed in an outdoor location to an RAU.
For outdoor installations, a protective enclosure is required.

Installing RAUs

Mount all RAUs in the locations marked on the floor plans.
Considerations:
• Install 800 iDEN and 850/1900 MHz RAUs so that their antennas will be separated
by enough space to reduce signal interference between the 800 and 850 bands.
Refer to Section , "800/850 MHz Isolation Requirements," on page 7-32 for rec-
ommended distance between antennas.
• You can place the unit, without its fastening hardware, on a flat surface, such as a
shelf, desk, cabinet, or any other horizontal surface that allows stable placement
with the mounting base facing down to the mounting surface. For mounting to
other locations (that is, walls, ceilings, poles) the RAU must be securely mounted
using the 4 slotted mounting holes provided with #6 diameter fasteners. This
method of mounting must securely hold a minimum of 7 lbs. load.
• Attach the RAU securely to a stationary object (that is, a wall, pole, or ceiling tile).
• For proper ventilation:
• Keep at least
• Do not stack RAUs on top of each other.
• Always mount the RAU with the solid face (containing the mounting holes)
against the mounting surface.

Installing Passive Antennas

Refer to the manufacturer's installation instructions to install passive antennas.
Location
Passive antennas are usually installed below the ceiling. If they are installed above
the ceiling, you must consider the additional loss due to the ceiling material when
estimating the antenna coverage area.
800/850 MHz Isolation Requirements
When deploying any RF system, give special attention to preventing receiver block-
ing or desensitization by out-of-band transmitters. Typically, sharp filters in the
receiver front-end will reduce the interfering transmitters to tolerable levels. In select
cases, the interferers may occupy a frequency band that is directly adjacent to the
receiving band and cannot be adequately rejected by filtering. The only recourse in
InterReach Fusion Installation, Operation, and Reference Manual
clearance around the RAU to ensure proper venting.
76 mm (3 in.)
D-620610-0-20 Rev D