ABB Tropos 6410 Installation Manual
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Contents
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Chapter 2 Tropos Routers Installation Guide, Models 6410 and 6420 17Location GuidelinesTropos routers are radio devices and therefore susceptible to interference that can reducethroughput and range. Follow these guidelines to ensure the best performance: Install the unit in an area where trees, buildings, and large steel structures do not obstructradio signals to and from the antenna. Direct line-of-sight operation is best. Install the unit away from possible sources of 2.4 GHz and 5 GHz interference, such ascordless phones, wireless cameras, frequency hopping (FHSS) and DSSS LAN transceivers(non-802.11), electronic news gathering video links, radars, amateur radios, land mobileradio services, local government sites (such as law enforcement), fixed microwave services,local TV transmission, and private fixed point transmitters.Site SurveysDue to variations in component configuration, placement, and physical environment, eachinstallation is unique. Before installing routers, perform a site survey to determine the optimumplacement of units for maximum range, coverage, and network performance. Consider thefollowing factors when performing a site survey: Data rates—Sensitivity and range are inversely proportional to data bit rates. The maximumradio range is achieved at the lowest workable data rate. A decrease in receiver thresholdsensitivity occurs as radio data rate increases. Antenna orientation—Proper antenna orientation is a critical factor in maximizing radiorange. As a general rule, range increases in proportion to gain and antenna height measuredfrom the ground. The Tropos 6410 and 6420 routers have integrated antennas; therefore,antenna location and orientation depend on the location of the unit. Physical environment—Clear or open areas provide better radio range than closed or filledareas. The less cluttered the operating environment, the greater the range. Obstructions—A physical obstruction, such as a building or tree, can block or hindercommunication. Avoid locating antennas in a location where there is an obstruction betweensending and receiving devices. Building materials—Radio penetration is influenced by the building material used inconstruction. For example, drywall construction permits greater range than concrete blocks.SafetyInstalling the routers can pose a serious hazard. Be sure to take precautions to avoid thefollowing: Exposure to high voltage lines during installation Falls when working at heights or with ladders Injuries from dropping tools and equipment Contact with AC power wiring |
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