User's Manual

SDB680 – INSTALLATION GUIDE TNM-I-E-0046
Aug 14 Page 13 ENVIRONMENTAL CONDITIONS
ENVIRONMENTAL CONDITIONS
OPERATING TEMPERATURE RANGE
For the 50 W SDB680 Base Stations, the operating temperature range is: −30 °C to +60 °C
(−22 °F to +140 °F) ambient temperature.
The storage temperature range is −40 °C to +80 °C (−40 °F to +176 °F).
Ambient temperature is defined as the temperature of the air at the intake to the cooling fans.
HUMIDITY
The humidity should not exceed 95% relative humidity non-condensing through the specified
operating temperature range.
DUST AND DIRT
The SDB680 Base Station has an Ingress Protection rating of IP30, i.e. it provides protection
against access to hazardous parts and the ingress of solid foreign objects >12.5 mm in size.
VENTILATION
The SDB680 Base Station uses forced air cooling to maintain internal temperatures and adequate
cooling airflow is critical to the performance of the base station. Whether wall mounted or rack
mounted, always ensure that there is adequate ventilation around the base station. The ambient
temperature must be kept within the specified range and it is strongly recommended that the
cooling airflow is not restricted.
For the SDB680 Base Station, the essential cooling airflow (recommended <40 °C) enters through
one side of the unit and the hot exhaust air exits at the rear of the unit. For optimal thermal
performance, heated air that has passed through the base station must not be allowed to re-enter
the air intakes of the unit.
At least 72 cm
2
of ventilation MUST be provided for each base station at the inlet AND at the
outlet.
In order to allow enough airflow through a rack mounted base station, it is recommended that:
A minimum distance of 5 cm clearance to any obstruction at the front of the unit.
A minimum distance of 10 cm clearance to any obstruction at the rear of the unit.
An open area of at least 50 cm
2
per tray of ventilation slots or louvres in front of the air
intakes for the fans of each unit; e.g. ten 6 x 85 mm slots will allow the recommended airflow.
An open area of at least 50 cm
2
per tray of ventilation slots or louvres to the rear of each tray
or in the top of the rack.
A 2U gap at the top of the rack.
Note.
The ventilation openings must be unrestricted. If the openings are covered with a
filter or grille, the open area must be increased in order to provide the same airflow as
unrestricted openings.
If the SDB680 Base Station is installed in a rack or cabinet with other equipment that has different
ventilation requirements, it is recommended that the SDB680 be positioned below this equipment.