Ruckus Wireless ZoneFlex 901-T504-US31, Руководство по установке

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T504 AP Installation Guide, 800-71032-001 Rev D
Planning the T504 Installation
Powering Options
13
Powering Options
The T504 supports AC power over cable (POC). 40 to 90 VAC POC is used when the T504 is powered
via an F-type coaxial cable connected to the HFC cable plant.
Performing a Site Survey
Perform a site survey to determine the optimal T504 placement for maximum range, coverage, and
network performance. Ruckus Wireless Support can supply site survey best practices information.
The location and orientation that you choose for the T504 play a critical role in the performance of
your wireless network. In general, Ruckus Wireless recommends installing the T504 away from
obstructions and sources of interference and ensuring that the AP’s best coverage zone is pointing
in the general direction of its wireless clients or associated bridge units as described in
T504 Omni
Antenna Coverage .
When performing a site survey, consider the following factors:
o
Data rates: Range is generally inversely proportional to data rates. The maximum radio range is
achieved at the lowest workable data rate. Higher data rates are generally achieved at closer
distances.
o Antenna type and placement: Proper antenna configuration is a critical factor in maximizing radio
range. As a general rule, radio range is increased by mounting the radio higher off of the ground
with the AP oriented so that the dome is tilted down. (For recommended orientation examples,
refer to
T504 Omni Antenna Coverage .)
o
Physical environment:
Clear or open areas provide better radio range than crowded or filled areas.
The less cluttered the operating environment, the greater the wireless range.
o Obstructions, building materials, and sources of interference: Physical obstructions, such as
concrete pillars, steel beams, buildings and trees, can block or hinder wireless communication.
Avoid installing the T504 in an environment where there is an obstruction between sending and
receiving devices. A number of machines and electronic devices that emit radio waves --- cranes,
wireless phones, microwave ovens, and satellite dishes --- interfere with and block wireless signals.
Building materials used in construction also influence radio signal penetration. For example,
drywall construction permits greater range than concrete blocks.
o Mounting: The T504 is designed to clamp onto a 1/4’’ to 3/8’’ (6.35mm to 10mm) support wire.
The hangers allow a 2’’ bundle of cables between the support wire and the T504.
o Power and backhaul connections: The T504 needs a backhaul connection to the CMTS and it
needs to be close enough to an AC power injector on the CATV cable to assure that it is able to
pull 20 watts at greater than 40 VAC. If not, then another power injector must be installed closer
to the T504.
When you are done planning the T504 installation, continue with Installing the T504 .