Technical data

Service Guide 85309-90082 3-3
LO/IF Distribution Unit General Information
85309B General Specifications
CAUTION Ventilation Requirements: When installing the instrument in a cabinet, the convection into
and out of the instrument must not be restricted. The ambient temperature (outside the
cabinet) must be less than the maximum operating temperature of the instrument by 4 C for
every 100 watts dissipated in the cabinet. If the total power dissipated in the cabinet is
greater than 800 watts, forced convection must be used.