User's Manual

DRAFT - CISCO CONFIDENTIAL
2-5
Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide
OL-4072-01
Chapter 2 Installation Overview
Installation Guidelines
Installation Guidelines
Because the bridge is a radio device, it is susceptible to common causes of interference that can reduce
throughput and range. Follow these basic guidelines to ensure the best possible performance:
• Install the bridge in an area where structures, trees, or hills do not obstruct radio signals to and from
the bridge.
• Install the bridge at a height sufficient to provide line-of-sight orientations.
Site Surveys
Because of differences in component configuration, placement, and physical environment, every
network application is a unique installation. Before installing multiple bridges, you should perform a site
survey to determine the optimum utilization of networking components and to maximize range,
coverage, and network performance.
Consider the following operating and environmental conditions when performing a site survey:
• Data rates—Sensitivity and range are inversely proportional to data bit rates. The maximum radio
range is achieved at the lowest workable data rate. A decrease in receiver sensitivity occurs as the
radio data increases.
• Antenna type and placement—Proper antenna configuration is a critical factor in maximizing radio
range. As a general rule, range increases in proportion to antenna height. However, do not place the
antenna higher than necessary, because the extra height also increases potential interference from
other unlicensed radio systems.
• Physical environment—Clear or open areas provide better radio range than closed or filled areas.
• Obstructions—Physical obstructions such as buildings, trees, or hills can hinder performance of
wireless devices. Avoid locating the devices in a location where there is an obstruction between the
sending and receiving antennas.
Unpacking the Bridge
Follow these steps to unpack the bridge:
Step 1 Open the shipping container and carefully remove the contents.
Step 2 Return all packing materials to the shipping container and save it.
Step 3 Ensure that all items listed in the “Package Contents” section are included in the shipment. Check each
item for damage. If any item is damaged or missing, notify your authorized Cisco sales representative.