SIA CCTV Camera Operations 2 — Questions and Answers
Question 1: What is a 'tour' or 'patrol' function on a PTZ camera?
- A manual sweep of the area by the operator
- An automated sequence where the camera moves through preset positions (Correct answer)
- A function that follows a specific person
- A diagnostic check of camera functions
Correct answer: An automated sequence where the camera moves through preset positions
A tour or patrol is an automated sequence programmed into the PTZ camera where it cycles through a series of preset positions with defined dwell times at each point.
Question 2: What is the main advantage of digital zoom over optical zoom?
- Digital zoom produces higher quality images
- Digital zoom has no real advantage — optical zoom maintains image quality (Correct answer)
- Digital zoom allows wider coverage
- Digital zoom works better at night
Correct answer: Digital zoom has no real advantage — optical zoom maintains image quality
Digital zoom simply enlarges the pixels of the existing image, resulting in reduced quality. Optical zoom uses the camera lens to magnify the image while maintaining full resolution.
Question 3: What should a CCTV operator do when they first take over a shift?
- Immediately start reviewing recorded footage
- Check all cameras are operational, read the incident log, and note any ongoing issues (Correct answer)
- Change all camera positions
- Turn off all monitors and restart the system
Correct answer: Check all cameras are operational, read the incident log, and note any ongoing issues
At the start of a shift, operators should check that all cameras and equipment are functioning, review the incident log from the previous shift, and note any ongoing situations or issues.
Question 4: What is the purpose of a video wall in a CCTV control room?
- To record footage
- To display multiple camera feeds simultaneously for monitoring (Correct answer)
- To store backed-up footage
- To block light from entering the room
Correct answer: To display multiple camera feeds simultaneously for monitoring
A video wall consists of multiple screens arranged together to display many camera feeds simultaneously, allowing operators to monitor a large number of cameras at once.
Question 5: What is 'multiplexing' in a CCTV system?
- Recording from one camera only
- Combining signals from multiple cameras onto one screen or recording device (Correct answer)
- Transmitting footage to police automatically
- Encrypting CCTV footage for security
Correct answer: Combining signals from multiple cameras onto one screen or recording device
Multiplexing is the process of combining video signals from multiple cameras so they can be displayed on a single monitor (split screen) or recorded on a single device.
Question 6: Why is it important for a CCTV operator to maintain an incident log?
- It is optional and only needed for serious crimes
- It provides a contemporaneous record that can be used as evidence and aids shift handover (Correct answer)
- It is only needed for insurance purposes
- It is used to track staff attendance
Correct answer: It provides a contemporaneous record that can be used as evidence and aids shift handover
An incident log provides a real-time, written record of all incidents and operator actions. It is essential for evidence, accountability, shift handover, and demonstrating professional standards.
SIA CCTV Camera Operations 2
What is a 'tour' or 'patrol' function on a PTZ camera?