Which BIT operates continuously while the terminal is powered on?

The Operational BIT (Built-In Test) operates continuously while the terminal is powered on. This type of BIT continuously monitors the systems and components of the equipment in real-time, ensuring that any issues are detected as they occur. By providing ongoing assessments, the Operational BIT helps maintain system integrity and performance during actual operation. This is crucial in military operations where reliable equipment functionality is essential for mission success.

While other types of BITs perform specific functions, such as the Start-Up BIT that runs diagnostics when the equipment is powered on, or the Interruptive BIT designed to run tests during specific operational conditions, these do not provide the continuous monitoring that the Operational BIT offers. The Background BIT typically runs checks without affecting normal operation but may not be as comprehensive or continuous as the Operational BIT, which is specifically intended to ensure ongoing system reliability throughout the terminal's operational life.