4RF Aprisa SR+ - Site Requirements; Power Supply; Equipment Cooling

78 | Preparation
Aprisa SR+ User Manual 1.11.1
Site Requirements
Power Supply
Ensure a suitable power supply is available for powering the radio.
The nominal input voltage for a radio is +13.8 VDC (negative earth) with an input voltage range of +10 to
+30 VDC. The maximum power input is 35 W.
WARNING:
Before connecting power to the radio, ensure that the radio is grounded via the
negative terminal of the DC power connection.
Equipment Cooling
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds 50°C, the Aprisa
SR+ convection air flow over the heat sinks must be considered.
The environmental operating conditions are as follows:
Operating temperature
-40 to +70˚ C (-40 to +158˚ F)
Storage temperature
-40 to +85˚ C (-40 to +185˚ F)
Humidity
Maximum 95% non-condensing
WARNING:
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds
50°C, the Aprisa SR+ must be installed within a restricted access location to prevent
human contact with the enclosure heat sink.
WARNING:
The Aprisa SR+ can be operated in an environment where the ambient temperature
exceeds 50°C. The heat sink will be a hot surface - do not touch.