Tait TB8100 Installation Manual

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Tait TB8100 Installation Manual Manual pdf 10 page image

10 Installation TB8100 Installation Guide© Tait Electronics Limited February 20071.7 VentilationAlways ensure there is adequate ventilation around the TB8100 base station.Do not operate it in a sealed cabinet. You must keep the ambienttemperature within the specified range, and we strongly recommended thatyou ensure that the cooling airflow is not restricted.Important The cooling fans are mounted on the front panel and willonly operate when the panel is fitted correctly to the frontof the subrack. To ensure adequate airflow through the basestation, do not operate it for more than a few minutes withthe front panel removed (e.g. for servicing purposes).1.7.1 Ambient Air Temperature SensorThe ambient air temperature readingfor the TB8100 base station isprovided by the ambient airtemperature sensor board b fitted tothe PA control board.The sensor board is inserted throughslots in the control board and heatsinkto be positioned between the heatsinkfins.Important If the sensor board is to provide accurate ambient tempera-ture readings, it must have forced airflow and must notcome into contact with the metal of the heatsink fins. Donot stack PAs with the fins together. It is possible forthe fins on one heatsink to slide between the fins on theother heatsink. This can damage the sensor board, and pos-sibly result in the heatsink fins becoming locked together.1.7.2 Cabinet and Rack VentilationRefer to Figure 1.2 on page 12.The cooling airflow for the TB8100 base station enters through the frontpanel and exits at the rear of the subrack. For optimum thermalperformance, the heated air that has passed through a base station must notbe allowed to re-enter the air intakes on the front panel. Any space at thefront of the cabinet not occupied by equipment should be covered by ablanking panel.b