This document provides information about closed-circuit television (CCTV) systems, including their components, types, and applications. It describes the major components of a CCTV system as the camera, lens, monitor, and digital video recorder. It explains the different types of CCTV systems as wired and wireless, and the various types of cameras like indoor, outdoor, dome, and bullet cameras. It provides details on lenses, cables, connectors, and common applications of CCTV cameras in places like shops, schools, and hospitals. Finally, it outlines the advantages of CCTV systems in increasing security and assisting police, and potential disadvantages around limited views and privacy issues.

1. J.Nixon
JF/BST/F/17/1/0023
Ancillary services

2. 
 Closed-Circuit television, also Know as video
surveillance, is the of video cameras to transmit a
signal to a specific place , on a limited set of
monitors.
What is the CCTV
system?

3. 
A CCTV system has major components namely:
 Camera
 Lens
 Monitor
 DVR. Among these components , the camera
is the most important because it is the one that
collects the images. The camera works the same
way that an ordinary cameras does only that it
can be left to operate on it on own.
How do CCTV system
works?

4. 
Components of cctv
System
Components
camera Lens
Monitor
unit DVR

5. 
 Wired CCTV system
 Wireless CCTV system
Types of cctv system

6. 
 Not all wireless cameras are IP- based.
 Wireless security cameras are CCTV cameras
that transmit a video and audio signal to a
wireless receiver through a radio band. Many
wireless security cameras require at least one
cable or wire for power ; ” wireless” refers to
the transmission of video/audio.
WIRELESS CCTV System

7. 
 wired CCTV is easy to install with expandable kits
via additional accessories making the system suitable
for many…..
Wired CCTV system

8. 
Types of Cameras
Indoor
camera
Night
camera
Outdoor
camera
Dome
camera
Pan tilt
zoom
camera
Vandal
proof
camera
Hidden
camera
Bullet
camera

9. 
 Indoor camera
 It’s name suggests used for indoor security
mechanism.
 These are suitable for security in Home, Schools ,
Offices , Hotels……
 Outdoor camera
 It’s is used for outdoor places.
 They are mostly used for entry and exit points with
limited night lighting.
Some example:

10. 
 IR day/ night cameras are used for high alert
security areas were surveillance needs to happened
day and night.
 These cameras are used by military personal in
parking lots and high security zones
 Used in a high level of security.
IR day/ Night Camera

11. 
 Cameras are installed inside a dark dome and are
design in a way that they go unnoticed by visitors.
 These cameras can be rotated and tiled manually.
 Dome cameras are used in public place like railway
station bus terminals , and other areas where there is
huge gathering of people.
Dome camera

12. 
Hidden camera

13. 
 These types of CCTV cameras allow a person
controlling the surveillance of an area to move
cameras remotely, usually with an RF(wireless) or
wired controller
 Most amenable cameras allow the person monitoring
it to move the camera from:
 Pan- right to left
 tilt – up to down
 zoom- close up zoom
PTZ CAMERAS (Pan-tilt-
zoom)

14. 
 Cylindrical
 Tapered shape
 Similar to that of a rifle bullet
 Outdoor use installed inside protective casings,
which protect against dust, dirt , rain, hail and other
harmful elements.
 Require long distance viewing
 Fixed or varifocal lenses.
Bullet cameras

15. 
 varifocal lens, size can be charged darning the
installation process & zoom in and zoom out is
possible
common sizes are there :
2.5mm-8mm
3.0mm-12mm
5.0mm-50mm
Lens

16. 
 There are 2 types of lenses:
 fixed
 varifocal
 Fixed lenses
fixed lenses are those lenses where lens side don's
charge. All we can ‘t zoom in or zoom out .
Common sizes are:
12mm,08mm,06mm,04mm,3.6mm,2.8mm
Types of Lens

17. 
 Sizing the lens for an application:
 Manual Iris – fixed setting for constant light
levels.
 Auto-Iris – the aperture automatically adjusts as
light levels change.
 Focal Length – the size of the lens (2.8 – 60mm)
 Today’s camera’s have better ability to make
adjustments to various light levels without the need
of auto-iris lens than Pre-Y2K cameras
Varifocal Lens

18. 
 A monitor (or other option ) for viewing the live and
recorded footage.
Monitors

19. 
 A DVR with a hard drive which will record and
allow play back of the video footage
 Available in CCTV security cameras – 4 channel, 8
channel , 16,32 channel DVR security system.
DVR(digital video
recorder)

20. 
 Video input
 Audio input
 USB port
 VGA port
 LAN port
 HDMI port
Back Side of A DVR

21. 
 Co-axial cable
 cabling to connect the CCTV cameras to
the DVR
 Ethernet
 It is to connect the IP CCTV to NDVR or NVR
Cables

22. 
 BNC
 For connect a coaxial cable
 RJ 45
 For connect a Ethernet cable
Connecters

23. 
 Cash room
 Parking area
 Shops
 Schools
 Holiday sites
 Hospital
Some Applications of
CCTV Camera

24. 
 More security.
 easy to maintain.
 Assist the police in crime.
 Increase the security level.
Advantages of CCTV

25. 
 Limited camera view
 Hacking
 Privacy is an issue
Disadvantage of CCTV

26. Thank You