Wireless Network Installation
"The barcoding industry has pioneered the use
of wireless data networks since the 1970's. We
install wireless networks not only for barcode scanners and mobile computers,
but also for desktop computers, and Voice over IP (VoIP) systems." -
Jay Steinmetz, President
Wireless (RF) Site Survey
Concerns
When
considering the use of wireless networks, it is extremely difficult to predict
the propagation of radio waves and detect the presence of interfering signals
without the use of specialized test equipment. Even if your installation
includes omni-directional antennas, radio waves do not travel the same distance
in all directions. Walls, doors, elevator shafts, people, and other obstacles
offer varying degrees of attenuation, which cause the radio frequency (RF)
radiation pattern to be irregular and unpredictable. As a result, one should
have an RF site survey performed to understand fully the behavior of radio
waves within a facility before installing any wireless devices.
Goals
The goal of an RF site survey is to gather enough information and data
to determine the number and placement of access points that will provide
optimal wireless network coverage. That usually means the support
of a minimum data rate in a given area. An RF site survey will also detect
the presence of radio interference coming from other sources that could degrade
the performance of the wireless LAN.
Usage
The need and complexity of an RF site survey will vary depending on the size
of the facility and the work that is to be accomplished. A site survey is
a good idea for the use of any wireless device because, without a survey,
users could end up with inadequate coverage and suffer from low performance
in some areas. The purchase of wireless equipment is no small expenditure,
so it is best not to leave any portion of the project up to chance.
For
more information about site surveys, contact Barcoding Inc.
On-Site Network Analysis
On-site wireless analysis services can determine if wireless networking
is a viable option for the location, or can provide troubleshooting for problems
with existing wireless networks. Common problems include lack of communication
between mobile units and handhelds, or dead spots where the radios fail to
work. Barcoding Inc. will send a certified network engineer with all the
test equipment necessary to evaluate or troubleshoot your situation.
Installation of Equipment
The installation phase is the most physically demanding phase of the project.
Using the site survey report, the installation should be a smooth process.
The access points and antennas will be installed in the facility using the
marked up drawing made after the site survey. Usually, the higher the access
points and antennas are mounted, the better the signal will propagate. This
will require the installer to have the ability to reach the support joists
for the ceiling or roof. Some of the activities that will take place during
the installation include but are not limited to:
- Mounting of access points
- Installation of NEMA enclosures on case-by-case basis
- Mounting of antennas
- Connection of antennas to access points
- Connection of backbone LAN to access points
- Connection of power to access points
- Installation and connection of remote power system
- Verification of coverage
- Configuration of access points and PDT's to include:
- Proper firmware level
- Radio information (system ID, channel, bit rate)
- IP addresses (provided by customer)
- Verification of backbone connectivity: Ping access points Ping host
All cabling and power runs should be done and tested prior to the installation
of the access points. After completing the installation, testing for proper
operation and coverage may indicate the need to move access points and possibly
use different settings. Finally, documentation on all the system hardware
and software will be provided to the IT staff as an aid to be used when supporting
the operational system
For more information,
contact Barcoding Inc.
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