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CCTV Security Cameras and Installations Dictionary

CCTV Dictionary

(ALC) Autmoatic Light Compensation -

The Cameras Built in ability to compensate for changes in scene lighting.

Aperture -

The opening in a lens that allows available light to enter the camera.

(AWB) Auto White Balance -

Circuitry in a color camera that allows It to yield perfect color pictures in different types of lighting.

(AGC) Automatic Gain Control -

Circuitry in a camera that allows it to improve performance in low light conditions.

(AI) Auto Iris Lens -

Type of lens where the aperture physically opens and closes to adjust the amount of light entering the camera, Not required on cameras with electronic shutter systems.

(BLC) Black Light Compensation -

Ability of a camera to balance the lighting in a scene with an extremely bright background such as sunlight.

Balun -

An Impedence matching device that allows you to send video signals over UTP more commonly understood as the ability to run analog camera signals over Cat5e or Ethernet Cable.

BNC -

Short for British Naval Connection represent the standard video connector used in analog security camera systems

C/CS Mount Lenses -

Standard CCTV box camera mounting.

CCD -

Device inside of a camera that ‘takes the picture and converts it to Electronic signals.

Coaxial Cable -

Normally RG-59 or RG-6 in CCTV systems this cable has a copper center conductor and copper shield

Day / Night Camera -

A Camera that displays color pictures in good lighting conditions, and automatically adjusts iris in low light conditions.

Depth of Field -

The portion of a video picture that is in focus.

(DVR) Digital Video Recorder -

A device that compresses and records video signals onto built in Hard Disk Drives see.

Field of View -

Area Covered by the camera not in center focus.

Focal Length -

The rated coverage of the lens in mm. Smaller numbers give a wider angle of coverage.

Ground Loop -

When the camera and monitor are powered from sources using different grounds with different ground potentials. If a path for current flow (other than the coax) exists, ground loops are possible. Solution: Install a ground loop corrector or power all camera from the same source as the monitor.

(HDD) Hard Disk Drive -

Memory unit that stores saved video recordings, sizes in Terabytes or Tb.

IP Address –

A String of numbers that identiffies a camera or DVR on a network, example 192.168.1.1

Iris -

Opens and closes to determine how much light to be let pass through the lens.

LCD Monitor -

Flat screen monitor used to view cameras in High Resolution.

Looping -

The ability to split your video signal into multiple outputs for multiple viewing locations.

Multiplexer -

Takes multiple cameras (Up to 16) and displays them on a single input or screen for viewing / recording.

NVR -

Network Video Recorder, used to record and view IP and Mega pixel systems

Quad Splitter -

Combines 4 cameras onto one screen for viewing / recording.

Resolution -

Measure of a cameras ability to reproduce details, measured in pixels or tv lines.

Sequential Switcher -

Displays cameras, one at a time on a monitor and scans through the cameras at a customizable length of time per shot.

Telephoto -

When a lens can see a long distance with great detail.

Varifocal Lens -

A lens that can be set for various focal lengths to achieve optimal coverage.

 More Questions? Call us anytime 800-404-8433 or E-mail – Info@MandJVideo.com – MandVideo.com

Choosing The Proper CCTV Lens Can Be Crucial

When buying a video security camera system it is very important to choose the right CCTV lens. The focal length of the camera lens should be one of the first things you consider. The lens can cover areas from 90 degrees,to view wide areas, all the way down to 15 degrees to read license plate. People often make the mistake of using one CCTV camera to cover a large area such as a parking lot. But to see real detail you need to use multiple security cameras with a mixture of wide and tight angle CCTV lens.
With a vari-focal lens the focal length can be adjusted and locked in to give you the proper view of your property. CCTV cameras mounted over a door should have a tighter lens to identify people, while cameras mounted in a room should have a wider CCTV lens for general viewing. Call M&J Video for a free security camera quote.M&J Video will take the guess work out of your security camera installation.We sell and install infrared CCTV cameras,DVR’s, monitors  and our security camera installations are clean and professional. We service all areas of Southern California including the Inland Empire ,San Bernardino , Riverside , Chino Hills and Redlands.

Choosing A Security Camera System For Your Home

Most people don’t know how to choose a video security camera system.  The first thing you would do is to figure out how many cameras you would need.  The homeowner would want to cover the backyard, the side yard and the front yard.  Typically, you would use infrared bullet cameras, which would allow you to see in low light conditions or complete darkness.  The next step would be to choose your digital video recorder.  Digital recorders come in four, eight and sixteen camera models.  You can also choose the amount of hard drive you want, from 500 gb to 4 tb.  The larger the hard drive, the more storage space you have.  The next step would be how to choose how to view  your cameras. They can be viewed live on site with an LCD monitor, or through the internet using your DSL connection.  The most important thing is to make sure you have a CCTV installer with lots of experience.  M & J Video has been in business for 28 years, installing video camera systems in 1,000 of homes southern California, as far as Santa Maria and Santa Barbara to Palm Springs and Indio.  You can trust our video installers to do a complete, clean and thorough job, with a free, one year, on-site technical support guarantee.  Of course, you will need the cost of your CCTV system up front, and M & J Video will give you a free estimate right over the phone.

Feel Secure with a Infrared License Plate Camera

We are currently installing 2 license plate cameras with infrared lighting in a shopping center in South El Monte. They will make a great addition to the 23 cameras that we already have installed to cover the parking lot and walkways. Every license plate will now be recorded to the DVR and logged for 3 months.