Specifications

Chapter 2 - Installation Equipment Positioning Guidelines
BreezeACCESS 4900 31 System Manual
2.2 Equipment Positioning Guidelines
This section provides key guidelines for selecting the optimal installation locations
for the various BreezeACCESS 4900 system components.
Select the optimal locations for the equipment using the following guidelines:
 The outdoor unit can be either pole or wall mounted. Its location should
enable easy access to the unit for installation and testing.
 The higher the placement of the antenna, the better the achievable link
quality.
 AU-ODU units without an integral antenna should be installed as close as
possible to the antenna (to ensure that the antenna's characteristics are not
affected by the ODU the distance must be higher than 10 cm).
 The antenna connected to the AU-ODU unit, should be installed so as to
provide coverage to all Subscriber Units (SUs) within its service area.
 The antenna of the SU (integrated or external) should be installed to provide a
direct, or near line of sight with the Base Station antenna. The antenna should
be aligned to face the Base Station.
 In some cases it might be necessary to up/down-tilt the antenna. An optional
Tilt accessory for the ODU providing a tilt range of +/-15° is available from
Alvarion. The tilt option might be necessary to either improve the link
conditions or, if the SU is too close to the Base Station, to reduce the receive
CAUTION
ONLY experienced installation professionals who are familiar with local building and safety codes
and, wherever applicable, are licensed by the appropriate government regulatory authorities should
install outdoor units and antennas.
Failure to do so may void the BreezeACCESS 4900 product warranty and may expose the end user
or Service Provider to legal and financial liabilities. Alvarion and its resellers or distributors are not
liable for injury, damage or regulation violations associated with the installation of Outdoor Units or
antennas.
NOTE
The recommended minimum distance between any two antennas serving adjacent sectors is 2
meters. The recommended minimum distance between two antennas serving opposite cells
(installed back-to-back) is 5 meters.