TB9400 Installation and Operation Manual Installation 49© Tait Limited March 20174.1 Before You Begin4.1.1 Equipment SecurityThe security of your base station equipment is a high priority. If the site isnot fully secure, the base station should at least be locked in a secure,ventilated cabinet to prevent unauthorized access.4.1.2 Grounding and Lightning ProtectionElectrical Ground The base station modules are grounded by physical contact between themodule case and the subrack. To ensure a good ground connection youmust tighten each module retaining clamp securely (refer to “FinalReassembly” on page 116 for the correct torque).A threaded grounding connector is provided on the rear of the subrack forconnection to the site ground point (refer to “Connecting Up the BaseStation” on page 71 for more details).Lightning Ground It 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 standardsorganization or regulatory body.4.1.3 Equipment VentilationAlways ensure there is adequate ventilation around the base station (referto “Cabinet and Rack Ventilation” on page 50).Notice Do not operate it in a sealed cabinet. You must keep theambient temperature within the specified range, and we strongly rec-ommended that you ensure that the cooling airflow is not restricted.Notice The cooling fans are mounted on the front panel and will onlyoperate when the panel is fitted correctly to the front of the subrack. Toensure adequate airflow through the base station, do not operate it formore than a few minutes with the front panel removed (e.g. for servicingpurposes).4.1.4 Ambient Temperature SensorThe ambient temperature reading for the base station is provided by thetemperature sensor located on the front panel circuit board.
