Alvarion BreezeACCESS II, Системное руководство

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Indoor SU-R Units
2-3
BreezeACCESS Version 4.5 System Manual
Installation Guidelines
This section describes the installation guidelines and the various
considerations that must be taken into account when planning the
installation.
Location of the Unit
!
The unit can be placed on a desktop or a shelf, or can be attached to
a wall.
!
The unit should be installed as near as possible to the antenna
(models with detached antenna). The RF cable connecting the unit
to the antenna should be as short as possible to guarantee
minimum power loss.
!
Keep the units well away from sources of heat, such as radiators,
air-conditioners, and so on.
!
Units with voice support should be installed at a distance of at least
3m from an indoor antenna to prevent interference to telephony
services. If a directional indoor antenna is used, do not install the
unit in the area covered by the antenna’s radiation pattern.
Location of the Antenna(s)
!
Any physical object in the path between two units can cause signal
attenuation. Common obstructions are buildings and trees. If a
unit’s antenna is installed indoors, the walls and/or windows
between the two sites are physical obstructions. Any buildings or
other physical structure, such as trees, mountains or other natural
geographic features higher than the antenna and situated in the
path between the two sites, can constitute obstructions.
! Install indoor antennas as close as possible to a window (or wall if a
window is not accessible) facing the required direction. Avoid metal
obstacles such as metal window frames or metal film anti-glare
windows in the transmission path. Install outdoor antennas high
enough to avoid any obstacles, which may block the signal.
Table 2-1: Required Type of Ethernet Cable
Unit Type
Connection to a
PC
Connection to a
Hub
SU-R Subscriber Unit Straight Crossed