6 Installation TB7100 Installation Guide© Tait Electronics Limited May 20051.4 Environmental Conditions1.4.1 Operating Temperature RangeThe operating temperature range of the TB7100 base station is –30°C to+60°C (–22°F to +140°F) ambient temperature. Ambient temperature isdefined as the temperature of the air at the intake to the cooling fans.1.4.2 HumidityThe humidity should not exceed 95% relative humidity through thespecified operating temperature range.1.4.3 Dust and DirtFor uncontrolled environments, the level of airborne particulates must notexceed 100μg/m 3 .1.5 Grounding and Lightning Protection1.5.1 Electrical GroundThe TB7100 base station modules are grounded by physical contactbetween the module mounting points and the chassis. To ensure a goodground connection you must tighten each module securely (refer theInstallation and Operation Manual chapter “Replacing Modules” for thecorrect torque).A threaded grounding connector is provided on the rear of the tray forconnection to the site ground point (refer to the Installation and OperationManual chapter “Connection” for more details).1.5.2 Lightning GroundIt is extremely important for the security of the site and its equipment thatyou take adequate precautions against lightning strike. Because it is outsidethe scope of this manual to provide comprehensive information on thissubject, we recommend that you conform to your country's standardsorganisation or regulatory body.