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CCTv Security Systems

CCTV Installation requires security analysis depending on past incidents and critical areas at the site & within the company. Depending on the report a comprehensive CCTV security installation plan can be made with a broad definition so that a range of exposures is considered and the focus should narrow to target those threats that are deemed the most applicable. Find below the CCTV definition in detail.

Types of cameras available:

  • CCTV
  • Bullet CCTV
  • Dome
  • Covert/Desktop/Board Cameras
  • Discreet Cameras
  • Infrared/Night Vision
  • Outdoor
  • Day/Night
  • Varifocal
  • Network/IP
  • Wireless
  • PTZ/Speed Domes
  • High-Definition Cameras
  • Wide Dynamic Range                                                                        

Dome Cameras

Board cameras with dome enclosure is called as Dome Camera are mini cameras that feature a lens mounted onto a circuit board. Their size sometimes as small as one inch by one inch makes them well suited for security camera system applications where discretion is important. They are often used for covert security camera system monitoring and some board cameras even utilize pinhole lenses. The average hole size on a pinhole lens is 1/16 diameter. This is the only part of the camera that must be exposed in order for a picture to be obtained. There are two types of pinhole lenses: flat and conical. Conical lenses require a smaller hole and are often used in security camera system installations involving ceiling tiles, while flat lenses are better when the security camera system is to be used with thin material, such as clothing. The small size of a pinhole lens does have a slightly lower resolution than a board lens, which is usually 1/2 inch in diameter, thereby allowing more light to enter.

C/CS Mount Camera

C mount lenses provide a male thread which mates with a female thread on the camera. The thread is nominally 1 inch in diameter, with 32 threads per inch, designated as "1/32 UN 2A" in the ANSI B1.1 standard for unified screw threads. The flange focal distance is 17.526 mm (0.69 inches) for a C mount, 12.52 mm for the otherwise identical CS mount. The advantage to a C Mount Camera is that the lens can be changed. If you need to see further than 35 or 40 ft then you'll need a c mount camera with a special lens. C Mount lenses are available from 4mm to 50mm. A 4mm lens provides facial detail and a 70 degree angle of view focused up to about 35 ft. An example of where you might use a fixed 4mm lens is in a small office, or at home to focus on your driveway.

WDR Camera

The Wide Dynamic Range (WDR) function of a camera is intended to provide clear images even under back light circumstances where intensity of illumination can vary excessively. The WDR allows a camera to filter the intense back light surrounding a subject and thus enhances the ability to distinguish features and shapes on the subject. WDR cameras are usually recommended for situations where light enters a premise from various angles such as a multi window room. A camera placed on the inside of the room will be able to see through the intense sunlight or artificial light coming in.

IR Camera

Infrared illuminators are used in areas where light is not sufficient for surveillance. They are generally used with black and white cameras since these cameras have greater sensitivity to infrared light. Color cameras that switch to black and white at night are coupled with IR illuminators for night time surveillance, making them suitable for both day and night viewing. Infrared illuminators use light emitting diodes, or LEDs, to transmit light. A single LED produces only a small amount of light so banks of LEDs are used. These banks can last up to 100,000 hours. LEDs are therefore extremely economical as well as efficient.

PTZ Camera

A Pan tilt zoom camera is a closed circuit television camera with remote directional and zoom control. These cameras are useful in covering large areas such as parking lots, gymnasiums, etc. PTZ cameras offer a level of functionality unavailable with fixed cameras: they can move up, down, and around. Zoom capabilities are available from 2X up to 55X. Their performance is impressive. See a license plate full screen from across the parking lot, or zoom in on an incident from a hundred yards away. These cameras can be programmed to scan an area automatically, after the user has finished controlling the camera.

IP Camera

IP Cameras (also known as a network camera, Internet camera and IP network camera) are security cameras that allow you to watch and record live video over a local network or the Internet. IP camera surveillance cameras have become very popular over the years considering they offer many benefits over traditional security cameras using CCTV (Closed Circuit TeleVision).

Discreet Cameras: It’s clock… it’s a smoke detector… it’s motion sensor. The real answer is none of the above. These are just some of the disguises for covert cameras. Of course, covert cameras can also be characterized by conventional cameras placed in discreet locations.

Outdoor: The key to outdoor cameras is the housing itself, which must be impenetrable to moisture, insects, dust and other elements.

Day/Night: Day/night cameras compensate for varying light conditions to allow the camera to capture images. These are primarily used in outdoor applications where the security camera is positioned for an outdoor parking lot, for example. In many cases, units are dubbed as having a wide dynamic range to function in glare, direct sunlight, reflections and strong backlight 24/7.

Varifocal: A camera with a varifocal lens allows the operator to zoom in or out while still maintaining focus on the image.

Network/IP: These cameras, both hardwired and wireless, transmit images over the Internet, often compressing the bandwidth so as not to overwhelm the web. IP cameras are easier to install than analog cameras because they do not require a separate cable run or power boost to send images over a longer distance.

Wireless: Not all wireless cameras are IP-based. Some wireless cameras can use alternative modes of wireless transmission. But no matter what the transmission method, the primary benefit to these units is still the same: extreme flexibility in installation.