What color is the OVRD light when the system handset is used to override on-line recording?

• A. Red
• B. Blue
• C. Green
• D. Yellow

Answer: (D)

When an override of the online recording is active, the system needs a rapid, unmistakable cue to show that normal automatic recording is being bypassed and that human control is in effect. Using a distinct light color for this state helps operators recognize the situation at a glance, without needing to interpret text or rely on other indicators.

Yellow is used here because it signals attention and caution. It communicates that something out of the ordinary is happening—an override mode that requires the operator to be mindful of continuing procedures and potential deviations from automatic recording. This color choice clearly differentiates the override state from the normal recording status and from any fault or other conditions.

Red typically denotes an alarm or fault condition, which is not the same as an intentional manual override. Green usually indicates normal operation, and blue often signals standby or another non-primary state, neither of which conveys that an override is actively in use.

So, the light being yellow best communicates that the system is under manual override for online recording.