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Cctv components

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Cctv components

  1. 1. CLOSED CIRCUIT TELEVISION CCTV
  2. 2. CCTV SYSTEM • CCTV (CLOSED CIRCUIT TELEVISION) Closed-circuit television (CCTV) 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, though it may employ point to point (P2P), point to multipoint, or mesh wireless links.
  3. 3. Components of CCTV • Digital Video Recorder • Security Cameras • Monitor • Power Supply • Other Accessories
  4. 4. CCTV Video Recorders
  5. 5. Digital Video Recorder (DVR) • A CCTV is essentially a computer that saves security video images to a hard drive. • Most security cameras in use today capture an analog picture. The DVR converts the analog signal to digital and then compresses it. • It is a consumer electronics device designed for recording video in a digital format within a mass storage device such as USB flash drive, hard disk drive or any other storage device. • records images from analogue cameras
  6. 6. How to install Hard Disc Drive to the DVR? • Please follow these instructions to replace the hard drive in your JP surveillance DVR. • Unplug the DVR from the source. • Using screw driver, remove the screws that hold the top cover in place on the DVR and slide it open. • Attach the new hard drive to your DVR using the screws provided for hard disk drive. • Attach the power and SATA cable to the back of the hard drive. • Install the DVR cover back into place.
  7. 7. Common DVR Ports: • Video In – Channels for Security Camera • Audio In – port for audio inputs • Audio Out – port for speakers • HDMI – port for HDMI supported monitor • VGA – port for VGA supported monitor • LAN – port allocated for the router • USB port – port for flash drives (backing-up files) and mouse • PTZ port – port for pan-tilt-zoom camera • Power Input – power supply port
  8. 8. Network Video Recorder (NVR) • a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. • An NVR contains no dedicated video capture hardware. • An NVR is typically deployed in an IP video surveillance system. • Records images from IP cameras.
  9. 9. What you need to consider when choosing a security surveillance NVR or DVR? • The most important factor when considering a recorder typically is your wiring. • Wiring will dictate what you need and what you can use a majority of the time. As an example, if you already have coax cables installed and connected to an older analog CCTV system it would make more sense to use a DVR that supports coax cable already. • Newer HD surveillance camera systems transmit HD video over coax so you can simply swap out your cameras and DVR for newer technology for a fraction of the cost of a new installation.
  10. 10. Hybrid Video Recorder (HVR) • can record images from both analogue and IP cameras. • All recordings are saved to hard disk. • Able to record audio in IP cameras • Able to record audio in microphone when in analog.
  11. 11. File Storage and Back-up
  12. 12. Security Camera
  13. 13. Security Cameras There are many different security cameras on the market that are designed to support different applications and mounting option. May be a dome camera, bullet camera, covert camera, or PTZ camera
  14. 14. Dome Camera • Dome CCTV Cameras. Dome Security Cameras are named for their dome-like shape. • Dome cameras are commonly used in surveillance systems inside of homes, casinos, retail stores, and restaurants. • A varifocal dome camera gives you the flexibility to adjust the focal distance of the camera lens to exactly where you need it.
  15. 15. Bullet Camera • Bullet Security Cameras. Bullet security c ameras are a type video surveillance camera that is typically small and shaped like a rifle bullet shell or lipstick case. • Smaller bullet cameras are typically the diameter of a cigar, but they are shorter. • Sometimes they are referred to as lipstick cameras.
  16. 16. Covert Camera • Covert cameras, also called hidden or spy cameras, are cameras which are used to secretly monitor locations. • They are usually installed inside common household items like mirrors, passive infrared detectors and smoke detectors to prevent suspicion.
  17. 17. PTZ Camera • A pan–tilt–zoom camera is a camera that is capable of remote directional and zoom control. • In television production, PTZ controls are used with professional video cameras in television studios, sporting events, and other spaces. • They are commonly referred to as robos, an abbreviation of robotic camera.
  18. 18. Different Camera Definitions • Analog Camera refers to CCTV cameras which is an analog video signal that is transmitted over coaxial cable back to a video recorder or monitor. So, the modern CCTV surveillance system (still sometimes called analog) is actually analog on the camera and cable side, but digital on the recorder side. • AHD Camera is an analog high definition closed-circuit television video surveillance camera that supports 720p and 1080p HD video resolutions. • IP Camera is an Internet Protocol camera. It is a type of digital video camera commonly employed for surveillance which can send and receive data via a computer network and the Internet. It is used for surveillance that can be directly accessed over a network connection.
  19. 19. Do CCTV Cameras Record Audio? Yes, that is the simple answer. CCTV camera, or IP Camera can of course record audio, together with video image. However, analog CCTV camera, and IP CCTV camera record the sound in different manners:
  20. 20. Analog CCTV • the audio input is directly fed into the DVR. • It means, between the DVR and the microphone (audio input device), it is the analog signal transmission. • The digitalization of the audio signal is done at the recorder level. • The limitation of how many microphones can be installed of this solution would be the number of inputs allowed by the DVR.
  21. 21. IP CCTV camera • the audio input is fed into the IP Camera. • Between IP camera and the microphone, it’s the analog signal transmission. • Digitalization of the audio signal is done at the IP camera level which will be transmitted to the NVR. • The limitation of how many microphones can be installed, for this solution, would be purely depend on the number of video channel of the NVR, and whether the IP camera comes with the audio input.
  22. 22. CCTV Monitoring
  23. 23. LED Monitors • BNC Connectors • HDMI (High Definition Multimedia Interface) • VGA (Video Graphics Array)
  24. 24. Internet/Online • Android Phones • Iphones • PC and Laptops
  25. 25. Power Supply
  26. 26. Centralized Power Supply / Power Supply Box also known as a power distribution box allows surveillance system installers to easily manage the power to multiple CCTV cameras at a central point (usually at the location of the DVR). allows your camera installation to be neater.
  27. 27. AC to DC Power Supply
  28. 28. AC to DC Power Adapter
  29. 29. Cables, Connectors and other Accessories
  30. 30. Coaxial Cable • Coaxial cable, or coax, is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield. • Many coaxial cables also have an insulating outer sheath or jacket. • Used to transmit signal from the camera to the DVR.
  31. 31. Siamese Cable • In the data world, siamese cable stands for a cable that is built to include both video and power. In contrast to Power over Ethernet (PoE), the power is attached to the side of the data cable. PoE makes use of wires intended for data to transfer power.
  32. 32. Ethernet Cable • Alternatively referred to as an Ethernet cable, a CAT5or Category 5 is a description of network cabling that consists of four twisted pairs of copper wire which can be used to transmit signal from security camera to the DVR.
  33. 33. BNC Connectors • The BNC (Bayonet Neill– Concelman) connector is a miniature quick connect/disconnect radio frequency connector used for coaxial cable. • It features two bayonet lugs on the female connector; mating is fully achieved with a quarter turn of the coupling nut.
  34. 34. BNC Straight Connector • Also known as BNC to BNC connector • Used to connect to coaxial cables together.
  35. 35. BNC to RCA Connector • BNC to RCA connectors are used with miniature-to- subminiature coaxial cable in radio, television, security camera microphones and other radio-frequency electronic equipment, test instruments, and video signals.
  36. 36. Power Supply Splitter Cable Allows multiple devices to be connected to a single power supply.
  37. 37. Power Supply Connectors •Used to connect terminal from the power supply to the splitter
  38. 38. Security Cam Microphone • Is an electronic device used to capture audio which is send to the DVR together with the captured video of the camera.
  39. 39. HDMI Cord • Stands for "High-Definition Multimedia Interface." • It is a digital interface for transmitting audio and video data in a single cable. • a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device such as Digital Video Recorder to a compatible computer monitor.
  40. 40. VGA Cord • A Video Graphics Array (VGA) connector is a three-row 15-pin DE-15 connector. The 15- pin video cards, computer monitors, laptop computers, projectors, and high definition television sets.
  41. 41. Internet Router/Modem •Plugged-in to the DVR port which is used to connect CCTV system to the internet system.
  42. 42. EnD of SliDes ……..thank you for listening

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