This document provides information on closed-circuit television (CCTV) systems, including their history, components, and considerations for buying a system. It discusses how CCTV uses video cameras and transmission to specific monitors, differing from broadcast TV. The first CCTV system was installed to observe V-2 rocket launches. Modern systems include wired and wireless options, and components like indoor/outdoor cameras, DVRs to record footage, and cabling to connect the various parts. Key factors for buying a system include camera type and lens based on lighting and needs for discreetness or deterrence.

3. • Closed-circuit television (CCTV), also known
as video surveillance is the use of video cameras to
transmit a signal to a specific place, on a limited set
of monitors.
• It differs from broadcast television in that the signal
is not openly transmitted

4. History
 The first CCTV system was installed for
observing the launch of V-2 Rockets.
 The noted German engineer was responsible
for the technological design and installation
of the system.
 These systems required magnetic tapes and to
be changed manually,
 VCR technology became available in the
1970s, making it easier to record and erase
information

5. Application of CCTV
 Bars / Pubs / Night clubs
 Cash rooms
 Car park
 Gaming Machines
 Historic Places
 Holiday sites
 Hospitals
 Number plate recording
 Public spaces and other
large areas
 Reception areas
 Retail
 Schools
 Shops
 Stadiums
 Staff theft & fraud
 Vending machines
 Ware house
 Other uses

6. • Crime prevention
• Industrial processes
• Traffic monitoring
• Transport safety
• Sporting events
• Monitor employees
• Use in schools
• Criminal use

9. What to Look for When Buying a
CCTV System:
 Should my CCTV cameras be discreet or a
visual deterrent?
 How do I know what to use indoors and
outdoors?
 What are the light conditions like?
 Is image clarity important?
 Is audio required?

10. Components of the CCTV System

14. 1. Wired CCTV System
2. Wireless CCTV System

15.  Indoor / Outdoor Cameras
 IR Day/Night Camera
 Dome camera
 Bullet Camera
 Vandal proof Camera
 Hidden Camera
 Pan Tilt Zoom Camera

16. PTZ Camera
Pan – Right to left
Tilt – up & down
Zoom – tight angle to wide angle
IR day/night Camera
• It used for high alert security
areas where surveillance need
to happened day & night
• Used by Military personal, High
security parking zones

17. Hidden Camera

18. Technology for Lighting Issues
 light is vital for producing a quality image
 There are a variety of technologies available that will ensure you
capture usable video regardless of the lighting conditions:
Day/Night

19. • IR Illumination
• Digital Noise Reduction

20. • Digital Slow Shutter
• Wide Dynamic range

21. Lens
 it is important to understand the angle of the lens.
o The angle of view depends on the focal.
• The larger focal, the narrower view angle.
• The sensor of camera (h×v ):
The formula:
f = v x D / V or f = h x D /H
f: the length of focal
H: the height of object
V: the width of object
D: the distance between camera and object
h: the height of the sensor in camera
v: the width of the sensor in camera

23. Fixed Lens
 Fixed Lens are those lens where lens size doesn’t
change , all we can do is focus, we can’t zoom in or
zoom out
 Common sizes are12mm, 8mm, 6mm, 4mm, 3.6mm, 2.8mm
Varifocal lens
 In varifocal lens size can be changed
during the installation process & zoom in
and zoom out is possible
 Common size available are
2.5mm – 8mm
3.0mm – 12mm
5.0mm – 50mm
 Focal length can be adjusted by 3
methods
•Manual (no cable)
•Auto Iris (with cable)
• Motor zoom (with cables and telemetry
receiver is needed)

24. DVR
A digital video recorder (DVR) is an electronic device that
records video in a digital format to a disk drive, USB flash
drive, SD memory card, SSD or other local or networked mass
storage device.
How To Select The Right Security DVR
Frame rate:
Resolution:
Compression:
Storage Capacity:
Audio Recording:
Video Output:
Number of channels:

25. Connect Camera with DVR  Co-axial cable
Connect IP camera with
NDVR/ NVR
 Ethernet cable
Connect DVR and Monitor  HDMI Cable
 VGA Cable
 USB Cable
Cables

26. Connectors
 BNC  For co-axial cable
Advantages of BNC
 Industry standard for CCTV cameras
 BNC cables are good for a distance of 300 ft.
(depending on cable quality)
 BNC cables lock in place, ensuring a consistent
image and no unwanted disconnection
Disadvantages of BNC
 Requires a separate power source
 Only transmits video
 Does not support audio
RJ45  For Ethernet cables

27. Monitors
 When viewing live or recorded CCTV footage directly from your DVR or
NVR, you will need a display monitor, screen or TV with compatible video
input connections.

28. THANK YOU