CCTV

Closed Circuit Television(CCTV) is the use of video cameras to transmit a signal to a specific place on a limited set of monitors.
CCTV comprises of camera, wires, monitoring screen, recorder.
It may employ point to point, point to multipoint or wireless links.

1. CLOSED CIRCUIT TELEVISION(CCTV) SYSTEM

2. CCTV? Closed Circuit Television(CCTV) is the use of video cameras to transmit a signal to a specific place on a limited set of monitors. CCTV comprises of camera, wires, monitoring screen, recorder. It may employ point to point, point to multipoint or wireless links.

3. Elements of CCTV: Camera Lens Monitor unit DVR/NVR Cable(Coaxial/Ethernet) Storage devices DC power supply(12V)

4. CAMERA SELECTION: Indoor camera Outdoor camera Dome camera Bullet camera Hidden camera Infrared Days/Night camera Pan tilt zoom camera Motion detection Wireless

5. TYPES OF LENS: There are two types of lenses Fixed lens: Fixed lens are those lens where the lens size doesn’t change, we can do is focus, we can’t zoom in or zoom out. Varifocal lens: Varifocal lens size can be changed during the installation process and zoom in & zoom out is possible.

6. MONITOR UNIT & VIDEO RECORDERS(DVR/NVR): MONITOR UNIT: The function of monitors is to display video images for viewing. Monitor selection is important for quality of images based on size and pixel. It also includes LCD and LED displays. VIDEO RECORDING : Video recorder is at the heart of the CCTV installation. Video recording is of two types Digital video recording(DVR) Network video recording(NVR) Each camera is connected to the channel.

7. Cables and Connectors: CABLES: CCTV can be analog or IP based. Depending on that cables can be coaxial cables or Ethernet cables. Cables connect the camera with the DVR/NVR. VGA cable HDMI(high definition multimedia interface) cable CONNECTORS: BNC connectors: A type of connector used to connect coaxial cables. RJ 45: A type of connector used to connect Ethernet cables.

8. Types of CCTV camera: ANALOG CCTV SYSTEM: Analog security camera capture an analog video signal and transfer that signal over coaxial cable to the Digital Video Recorder(DVR). DIGITAL/IP CCTV SYSTEM: IP stands for Internet Protocol and basically refers to a digital video camera that can send and receive data via a computer network. Requires Network Video Recorder(NVR) for recording.

9. STORAGE DEVICES: Hard disk drive or HDD need to store the CCTV camera footage. It help to review the CCTV footage.

10. Use of CCTV camera Reduced cost Prevent crime Increase customer confidence Easy to implement Prevent safety incidents

11. APPLICATIONS: Cash rooms Shop School Football and cricket camera Swimming pools Car park Reception areas Historic places Hospitals Bank Staff theft and fraud

12. Types of CCTV and it’s applications

13. 1. Dome CCTV Cameras This is the best type of CCTV camera for shops, restaurants, casinos and hotels because the design allows you to monitor a wider angle at your premises. Many also consider this option to be the best indoor CCTV camera as it can be placed on a strategic point of the ceiling to cover all angles of the room.

14. Dome CCTV camera

15. 2. Bullet CCTV Cameras Bullet cameras can be used to good effect in a range of industries such as manufacturing, property management and farming. They not only record good quality pictures but also send out a message to passers-by that your premises is under surveillance. That’s why they have traditionally offered the best CCTV for outside operation.

16. Bullet CCTV camera

17. 3. C-Mount CCTV Cameras This is the ideal camera for observing a stretch of road on the approach to your premises. It is therefore popular in the utilities and logistics industries. Those operating in the food and manufacturing industries may also elect for this option, due to the camera’s reliability in extreme temperatures.

18. C-Mount CCTV camera

19. 4. PTZ Pan Tilt & Zoom Cameras Popular in large retail environments and is regarded as the best CCTV for business premises that have a specific valuable object to protect. For example, a museum could program the camera to pan to a particular entry or exit point when it detects movement. So even when it is not being controlled remotely, the camera can cover a much larger area and do the same job of several static cameras.

20. PTZ pan tilt and zoom camera

21. 5. Day/Night CCTV Cameras There are various CCTV camera types suited to outside use but the extra sensitive imaging makes this one unique. It is therefore the ideal CCTV system for business premises that require round the clock CCTV monitoring in an outdoor environment with varying light conditions.

22. Day/Night CCTV Camera

23. 6. Infrared/Night Vision CCTV Cameras This is the best CCTV camera for night vision functionality. It’s therefore the ideal choice for those who need ultra-reliable recording in complete darkness. For example, banks, farms and manufacturing plants.

24. Infrared CCTV camera

25. 7. Network/IP CCTV Cameras A network or IP CCTV camera is the ideal choice for business owners who are often away from site and on the move. Footage can be viewed from anywhere in the world, via a PC, laptop or mobile phone.

26. Network/IP CCTV camera

27. 8. Wireless CCTV Cameras If a spotless presentation is important in your industry, wireless CCTV cameras are a great security option. Their discreet appearance helps them to blend into the interior. What’s more, there is less set up and camera maintenance required, and footage is transferred via the internet for convenient access.

28. Wireless CCTV camera

29. 9. High Definition (HD) CCTV Cameras High definition cameras are particularly useful for use in environments where there is a high risk of theft. Businesses such as banks and casinos should opt for HD cameras, in order to ensure that visitors to their premises are captured in perfect clarity. The footage recorded will be able to provide undeniable identification in the event of a crime being committed.

30. HD CCTV camera