Airspan ProST 4.9, Руководство по установке оборудования

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Getting Started
11
Torque wrench for N-type connectors (only relevant when implementing external
antenna)
Note: Airspan does not provide screws and wall anchors for mounting the ProST to the
wall. The screw size depends on the structure of the building to which the ProST is to be
attached. When selecting screw sizes, consideration must be given to the weight of the
ProST and load that may be induced in windy conditions.
Radio Site Planning
Proper site selection and planning before installing your ProST will ensure a successful
deployment of your AS.MAX system. A summary of the main site planning considerations is
provided below:
Minimum obstructions (e.g. buildings) in the radio path between base station and the
ProST
Mount radio as high as possible to avoid obstructions in the wireless path
Check possibility of future obstructions such as plans to erect buildings and trees that
may grow tall enough to obstruct the wireless path
Minimum incursions on Fresnel Zone (recommended minimum of 60% clearance of first
Fresnel Zone)
Align radio for maximizing received signal strength (RSS)
Consider nearby sources of interference that could degrade performance of radio
Mount radio as far from sources of interference as possible
Ensure base station and ProST are within maximum coverage range of reception
Maximum standard CAT-5 cable length connecting the outdoor ProST to the indoor
SDA-1 is 100 meters.
Ensure that you have sufficient wiring conduit and cable ties to channel and protect the
CAT 5 cable connecting the outdoor ProST to the indoor SDA-1.
Minimal Radio Path Obstructions
AS.MAX radios communicate by propagation of waves. Thus, ensure minimum obstructions
(from, e.g. buildings and trees) in the radio path between base station and ProST. It is
essential that the ProST is installed in such a way that the radio path with the base station
has a clear path with each other.
Fresnel Zone Clearance
There must be sufficient open space around the radio path to minimize blocking of the radio
beam. A minimum of 60% of the first Fresnel Zone of the path should be clear of
obstructions. Despite a clear line-of-sight, objects close enough to the transmission path
may cause attenuation in signal strength and an increase in signal interference. Objects
with reflective surfaces that seem relatively far away, but yet still encroaching on Fresnel
Zone, may cause these interferences.