X75HD/X75SD Installation and Operation Manual 71
Chapter 4: System Installation and Connections
After unpacking the unit, and before installing into a console or rack,
allow at least 30 minutes for temperatures to equalize and to eliminate
any condensation that may have developed. The X75 requires an
ambient temperature of between 41° to 113°F (5° to 45°C), with a
relative humidity of 10-90% (non condensing). Proper operating
temperatures can be maintained only when the front panel is properly
installed.