What does the term "event delay" relate to in CCTV systems?

The term "event delay" in CCTV systems specifically refers to the time that elapses between an event occurring and the moment when it is actually viewed by the operator or user. This is critical in surveillance situations where timely response to events is necessary. If there is a significant delay, it can impact the effectiveness of the surveillance, as the operator may miss crucial moments that require immediate attention, such as intrusions or emergencies.

In contrast, the other options address different aspects of CCTV operation. The time taken for a camera to power on pertains to the camera's initialization process, which is separate from live event monitoring. The lag in transmission between multiple cameras highlights issues related to synchronization in a multi-camera setup, but does not precisely define "event delay" as it relates to a specific event and its viewing. Lastly, the time required for video footage to be stored describes the recording process and storage management, which is another function distinct from live event viewing. Thus, understanding "event delay" as the gap between an event occurring and its visibility on-screen is key to effectively monitoring and responding in CCTV operations.