BURN-IN SYSTEM   The growing complexity of integrated circuits requires today high quality and reliability standards that can be obtained by means of burn-in processes only. Burn-in is the widely accepted means to achieve dependable results because it simulates real test conditions in the presence of such accelerating factors as temperature. The experience in the field has shown that adolescence or premature mortality normally occurs during the first 1000/2000 working hours. Burn-in aims at cutting down the so-called "infantile mortality". ACS provides a full range of modular burn-in systems allowing components to be monitored directly on boards during burn-in.