Preparing for Installation
Tropos 5210 MetroMesh Router Installation Guide
6
Warning
It is illegal to modify the construction of this product. Modifying the operating frequency or
enhancing the transmit output power through the use of external amplifiers or other
equipment is specifically disallowed by the Taiwan DGT “Telecommunications Act.”
Warning
This device is for outdoor or indoor use with conditions that no harmful interference to
authorized radio stations results from the operation of this device. This device shall not
influence aircraft security and/or interfere with legal communications as defined in the
Taiwan DGT “Telecommunications Act.” If this device is found to cause interference, the
operator of this equipment shall cease operating this device immediately until no
interference is achieved.
Site Surveys
Due to variations in component configuration, placement, and physical environment, each
installation is unique. Before installing the Tropos 5210 MetroMesh router, perform a site
survey to determine the optimum placement of units for maximum range, coverage, and network
performance. Consider the following factors 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 threshold
sensitivity occurs as radio data rate 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 gain and antenna
height measured from the ground.
Physical environment—Clear or open areas provide better radio range than closed or filled
areas. The less cluttered the operating environment, the greater the range.
Obstructions—A physical obstruction, such as a building or tree, can block or hinder
communication. Avoid locating antennas in a location where there is an obstruction between
sending and receiving devices.
Building materials—Radio penetration is influenced by the building material used in
construction. For example, drywall construction permits greater range than concrete blocks.
Diversity—The Tropos 5210 MetroMesh router supports transmit and receive diversity,
which requires two antennas.
