Which status indicator would appear if the radar's built-in test fails?

Which status indicator would appear if the radar's built-in test fails?

• A. Standby
• B. BIT Fail
• C. Fault
• D. Comp Down

Answer: (D)

A built-in test checks the radar’s critical subsystems and computer hardware to verify they’re functioning. If the diagnostic finds a fault that prevents the radar from operating, the system shows the overall equipment status as Comp Down. This signals that the unit cannot operate until the fault is fixed, which is why Comp Down is the indicated status after a failed BIT. Standby means the radar is powered and ready but not transmitting; a general Fault might indicate a fault but not necessarily that the core computer is down; BIT Fail would be a test-specific indicator, but the fail condition that stops operation is represented by Comp Down.

A built-in test checks the radar’s critical subsystems and computer hardware to verify they’re functioning. If the diagnostic finds a fault that prevents the radar from operating, the system shows the overall equipment status as Comp Down. This signals that the unit cannot operate until the fault is fixed, which is why Comp Down is the indicated status after a failed BIT. Standby means the radar is powered and ready but not transmitting; a general Fault might indicate a fault but not necessarily that the core computer is down; BIT Fail would be a test-specific indicator, but the fail condition that stops operation is represented by Comp Down.