The illumination for normally occupied vital areas should be within the range of 100 to 200 foot-candles measured horizontally 3 feet above the floor. The lighting should be uniform, shadowless, and free from glare. Definitions of Selected Terms a. Candle . The candle is an international unit of luminous intensity. See also foot-candle.
Detection is the positive assessment that a specific object was the cause of an alarm.
Recognition is the positive assessment that the detected object is human, animal, or something else. Identification is the positive assessment that the recognized object is a specific human, animal, or something else. The foot-candle is a unit of illumination. See also candle. The zones of observation for perimeter intrusion alarm assessment by CCTV are those parts of the isolation zone and exterior areas of the protected area extending from the nearest point on the ground viewable by the CCTV camera to the similar point on the ground viewable by an adjacent CCTV camera that is pointed in the same direction or azimuth.