This document provides information about closed circuit television (CCTV) systems. It defines CCTV as a television system that transmits video signals via cable from one or more cameras to a restricted set of monitors, mainly for security purposes. The document then lists and describes the key components of a CCTV system, including cameras, recorders, adapters, monitors, and various cables and connectors. It concludes by outlining the procedures for installing a CCTV system.

3. LEARNING OUTCOME:
AFTER READING THIS INFORMATION SHEET, YOU MUST BE ABLE TO:
• IDENTIFY CLOSED CIRCUIT TELEVISION CONNECTION
•CAN TERMINATED CLOSED CIRCUIT TELEVISION CONNECTIONS

4. INTRODUCTION:
CLOSED CIRCUIT TELEVISION IS A TELEVISION SYSTEM IN WHICH THE
VIDEO SIGNALS ARE TRANSMITTED FROM ONE OR MORE CAMERAS BY CABLE TO
A RESTRICTED SET OF MONITORS. CCTV IS USED FOR A NUMBER OF
MONITORING AND SURVEILLANCE PURPOSES, BUT IS MAINLY USED FOR
SECURITY PURPOSES. CCTV INVOLVES THE USE OF AN UNMANNED, REMOTELY
MOUNTED VIDEO CAMERA SYSTEM, TRANSMITTING LIVE PICTURES BACK TO A
TELEVISION SCREEN WHERE DEVELOPMENTS CAN BE MONITORED AND
RECORDED.

5. PARTS OF CLOSED CIRCUIT TELEVISION
THIS COVERS A WIDE SYSTEM COMPONENTS THAT INCLUDE, BUT NOT LIMITED TO THE
FOLLOWING:
•CCTV CAMERA
•RECORDER
•CCTV ADAPTER
•MONITOR

6. CCTV CAMERA
THE AUXILIARY DEVICE OF CCTV
THAT MONITOR THE MOTION
DAILY. A VIDEO CAMERA
EMPLOYED IN A CCTV SYSTEM

7. RECORDER
NETWORK VIDEO RECORDER (NVR)
IS A DIGITAL DEVICE WHICH SITS ON
YOUR IP CCTV NETWORK TO
RECEIVE LIVE IMAGE/ VIDEO
STREAMS AND RECORD THEM
DIGITALLY TO A HARD DISK.

8. CCTV ADAPTER
MOST CCTV CAMERAS ARE EITHER
12V DC OR DUAL VOLTAGE, WHICH
MEANS THAT THEY CAN USE EITHER.
PLEASE NOTE THAT CONNECTING A
12V SECURITY CAMERA TO A 24V
POWER SOURCE WILL ALMOST
ALWAYS BURN THE CAMERA’S
CIRCUIT BOARD AND RENDER THE
CAMERA USELESS.

9. CCTV MONITOR
AN ELECTRONIC DEVICE FOR DISPLAYING VIDEO
OUTPUT THAT MAYBE DIGITAL OR ANALOG. A
MONITOR OUTPUTS ALLOWS YOU TO CONNECT A
MONITOR VIA VIDEO GRAPHICS ARRAY(VGA) OR
HIGH DEFINITION MULTIMEDIA INTERFACE (HDMI)
ON THE NVR.

10. CCTV ACCESSORIES

11. BNC CONNECTOR
BAYONET NEILL-CONCELMAN
TYPE CONNECTOR ARE WEATHER
RESISTANT, TWIST- LOCKING,
COAXIAL CONNECTORS THAT ARE
ALSO DEPLOYED IN MOST
PROFESSIONAL VIDEO CABLING
APPLICATION BETWEEN THE
CABLE AND COMPONENT WITH
LESS THAN 180 DEGREE ROTATION

12. DC PLUG
• A DC CONNECTOR (OR DC PLUG, FOR
ONE COMMON TYPE OF CONNECTOR)
IS AN ELECTRICAL CONNECTOR FOR
SUPPLYING DIRECT CURRENT (DC)
POWER TO THE GRID. COMPARED TO
DOMESTIC AC POWER PLUGS AND
SOCKETS, DC CONNECTORS HAVE
MANY MORE STANDARD TYPES THAT
ARE NOT INTERCHANGEABLE.

13. VIDEO GRAPHICS ARRAY
A VIDEO GRAPHICS ARRAY (VGA)
CABLE IS A TYPE OF COMPUTER
CABLE THAT CARRIES VISUAL
DISPLAY DATA FROM THE CPU TO
THE MONITOR. A COMPLETE VGA
CABLE CONSISTS OF A CABLE AND
A CONNECTOR AT EACH END, AND
THE CONNECTORS ARE TYPICALLY
BLUE.

14. HIGH DEFINITION MULTIMEDIA INTERFACE CORD
AN HDMI CABLE IS USED TO CONNECT
DIFFERENT COMPONENTS TO A HIGH
DEFINITION TELEVISION OR MONITOR
AND PROVIDES VIDEO AND AUDIO IN A
SINGLE CABLE (AS OPPOSED TO
HAVING SEPARATE CABLES FOR
EACH).

15. UNSHIELDED TWISTED PAIR ( UTP )
A TYPE OFTEN USED INDOORS
TO CONNECT TELEPHONES OR
COMPUTER DEVICES. COMES
WITH TWO OR FOUR WIRES
TWISTED INSIDE A FLEXIBLE
PLASTIC SHEATH OR CONDUIT
AND USES MODULAR PLUGS
AND PHONE JACKS.

16. RG-59 CABLE
RG-59 NAME REFERS TO THE “59TH”
PAGE OF AN OBSOLETE MILITARY
SPECIFICATION “RADIO GUIDE”. THE
VIDEO SIGNAL IS SENT VIA THE SOLID
CORE COAXIAL. THEY WILL ALL HAVE
SOLID CORE CENTER CONDUCTORS,
SHIELDING AND IMPEDANCE OF 75
OHMS SURROUNDED BY ALPOLY FOIL/
AL-MYLAR FOIL SHIELD AND BRAID
SHIELD.

17. PROCEDURES INSTALLING CCTV SYSTEM
1. WEAR APPROPRIATE PPE.
2. INSTALL YOUR CCTV CAMERA.
3. CONNECT THE CCTV CABLE TO THE CAMERA.
4. USE THE P4 CONNECTOR TO POWER THE CAMERA.
5. CONNECT THE POWER SUPPLY TO THE CAMERA.
6. CONNECT THE CAMERA TO THE MONITOR.
7. TURN ON THE MONITOR