Surveillance Techniques & Equipment Operations Flashcards
7 cards from real CSP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Surveillance Techniques & Equipment Operations flashcards as text
What does the term 'lux rating' on a surveillance camera specification indicate?
Answer: The minimum light level required for the camera to produce a usable image
Lux rating specifies the minimum illumination level at which a camera can produce a usable image; lower lux values indicate better low-light performance.
During a mobile surveillance operation, the 'eye' refers to:
Answer: The team member with direct visual on the subject at any given moment
The 'eye' is surveillance terminology for the operator who currently has direct visual contact with the subject and is responsible for directing other team members.
Which video compression standard offers the best balance of image quality and bandwidth efficiency for modern IP surveillance systems?
Answer: H.265/HEVC
H.265/HEVC achieves approximately 50% better compression efficiency than H.264 at equivalent quality, significantly reducing bandwidth and storage requirements for surveillance systems.
An operator notices a camera's image has become blurry only at night while daytime images remain sharp. The most likely cause is:
Answer: IR focal shift due to the camera lens not being IR-corrected
IR focal shift occurs when infrared light focuses at a slightly different plane than visible light, causing blur in cameras with lenses not optically corrected for IR wavelengths.
What is the legal doctrine of 'reasonable expectation of privacy' primarily used to determine in surveillance operations?
Answer: Whether conducting surveillance in a particular location requires legal authorization
The reasonable expectation of privacy doctrine, established in Katz v. United States, determines where government surveillance requires legal authorization versus public observation.
In a CCTV system, what is the purpose of a video matrix switcher?
Answer: To route any camera input to any monitor output in large systems
A video matrix switcher allows operators to selectively route any camera signal to any display monitor, enabling flexible viewing configurations in large multi-camera installations.
When photographing a surveillance subject for identification purposes, the ideal image should prioritize:
Answer: A clear frontal facial image showing distinguishing features
Facial recognition and positive identification require clear frontal facial images that show distinguishing features such as eye color, facial structure, and notable marks.