Abstract

An independent test facility is described, which simulates the environments of distributed computer control systems with special emphasis on the exact modeling of the prevailing time conditions. Its main application areas are software verification and safety licensing. Following the black-box approach, just by providing worst case oriented input patterns to integrated hardware-software-systems and monitoring the corresponding outputs, the time behavior of such control systems can be determined precisely. High accuracy time information is provided by employing a hardware supported timer synchronized with legal time, viz., Universal Time Coordinated, as received via satellite from GPS, the global navigation and positioning system.

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