Posts Tagged ‘ cctv camera systems ’

CCTV Security Camera Systems

Monday, May 9th, 2011

Closed Circuit TeleVision or CCTV security camera systems are fast becoming the most popular means of security for residential and commercial applications.   Thanks to modern technology these systems are incredibly versatile and reasonably priced.

CCTV security camera systems are available with 4, 8, 16, or 32 cameras.  These systems are not required to use the number of cameras specified; in other words this is the maximum number of cameras the system can handle.  So if your security system design calls for seven cameras you will require an 8 camera (also called “channel” CCTV security camera system).

This is a good time to define the word “channel” as it is used in CCTV Security camera systems.  A bit of ambiguity exists because the term is used loosely in two different ways.  One meaning indicates the number of inputs (usually audio or video) or number or camera the system is capable of utilizing.  For example a 16 “channel” system is also a 16 camera system.

The second meaning of the word “channel” is used to refer to radio frequencies often used in wireless digital video security systems.  For example one wireless camera may have 4 different channels or 4 different radio frequencies that it can transmit information to a corresponding receiver.  Generally, when a camera or other wireless device has a choice of radio frequencies from which to operate it’s said to have multiple channels; in contrast, when a digital video recorder or DVR can work with a maximum number of 8 cameras it is said to have 8 channels.

Security Camera King features several complete CCTV security camera system packages.  These packages are categorized by the number of channels the system can handle.  In addition to the number of cameras, these systems can also be categorized by DVR type.  There are 4 such DVRs available in our complete system packages.  They are the Elite Mini Economy, the Elite Mini HD, the Elite Series, and the Ultimate Series.

Besides number of channels and DVR type, security Camera King also offers these feature systems with two basic cabling options.  The first includes plug N play cables and the second is a bulk cable option.

The plug n play cable option includes a 100 foot long RG59/Power Cable complete with BNC connectors and power plugs terminating each end of the cable.   Basically, with these systems all that is needed is to mount the cameras run the cable and plug each of the cable ends into the camera and DVR.  These packages also include a small transformer that plugs into any wall outlet to supply the cameras with power.

The bulk cable option includes a power distribution box(es) 500 feet or more of Siamese rg59/18-2 and all the BNC and Power plugs necessary to connect the cameras to the DVR and power supply.  The BNC connectors are twist-on connectors so no additional equipment is needed for these systems.  The bulk cable option is especially useful for cable runs over 100 feet in length or very short cable runs as well.

These CCTV security camera systems offer powerful features at truly competitive, economic prices.  Starting with the cameras, here is a partial list of some of the features available:

No matter what DVR you choose, the all have a tremendous amount of functions and features with some having more than others.  The following is a partial list of DVR features:

  • Pentaplex operation;
  • Various digital video file copy/back-up options;
  • Various output display options including matrix viewing;
  • Internet compatible;
  • PTZ camera control;
  • Some models may be used to control input/output from burglar alarm sensors; and,
  • Various video image controls.

After you know the size of the system you’ll need to determine what type of DVR that you desire.  Finally, determine your cabling options.  If any single camera has a cabling run of a distance of greater than 100 feet, consider the bulk cable option.

If you have any questions regarding the purchase, use, or installation of a Security Camera King CCTV Security Camera system, contact one of our security experts today via on-line “Live Chat” or by telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.


CCTV Camera Systems

Thursday, March 17th, 2011

These days there are more Closed Circuit TeleVision or CCTV camera systems than applications for their uses.  If you are interested in such a system, it will serve you well to do some research before venturing out to make your fist purchase.  At Security Camera King, we encourage you to shop around, because we know that we offer the highest quality systems and the best possible prices.  After you’ve looked at other offers, we’re sure you’ll come back to us to make your final purchase.

You may be asking what is meant by the term “CCTV Camera System.”  A CCTV camera system is simply a digital video camera system that normally includes a Digital Video Recorder and a display monitor.  Today’s systems are entirely digital and the systems are component systems, meaning that when putting together your system, you can choose different pieces of the system that have different functions to tailor fit the system to your needs.

First a little history.  Closed Circuit Television or CCTV got its name way back in the days of analog transmissions.  A typical video security system was referred to as a Closed Circuit system because the cameras did not broadcast their signals to the open public.  These cameras were basically smaller versions of the cameras used in television studios.  However, television studio broadcasts were amplified and distributed to the open public (i.e. anyone that had a receiver or television).

CCTV on the other hand, consisted of a circuit of one or more cameras, each connected to a video recorder by means of a video transmission cable.  Analog CCTV camera systems recorded their video on magnetic tape, usually VHS or Beta format.   The used tape had to be ejected and a new one put in place every few hours or a “loop” tape was used.  When a loop tape reached the end of the tape, it simply continued over again on the beginning of the tape, re-recording over the original.

Today, CCTV camera systems are digital.  Instead of sending their video transmissions in analog type signals, they are sent in binary or digital form, usually in the form of bits or bytes, the same sort of digital segments used by personal computers.  The camera data is compiled into a digital video file which can either be stored on a hard drive disk or other storage media and/or viewed on a digital monitor.

Since the data is digital, many of the individual electronic components of a modern CCTV camera system are the same things used in personal computing.  For example, the computer Hard Disk Drive or HDD is the major constituent of the DVR storage.  A computer processor, much like the Central Processing Unit or CPU of a personal computer compiles the digital video files, controls and coordinates camera activity as well as playback and other DVR functions.

Since the original video security systems were analog and were called CCTV camera systems, there may be some confusion or crossover that exists today when describing digital video systems.  For example, analog CCTV cameras displayed their video on older CRT (cathode ray tube) type television monitors.  The CRT monitor displays a picture by rapidly projecting horizontal lines across the screen; the more horizontal lines per fixed vertical area, the greater the detail or resolution of the video.

Digital video is not displayed in horizontal lines, but as a series of horizontal and vertical dots called pixels.  These pixels may be circular or square in shape.  Generally speaking, the more pixels in a video for a fixed area, the greater the detail of the video because the dots are much smaller.  This allows for finer detail in the image.

So where’s the confusion?  Today you may still see CCTV camera systems that describe their clarity or detail or resolution of the camera in terms of Televsion Lines or TVL.  Yet other cameras may describe their resolution in terms of pixels.  For more information on determining the equivalencies of resolution for these systems see the articles in our knowledge base.

Since most of our monitors that are manufactured today are no longer CRT type but are more commonly LCD (liquid Crystal Display) or LED (Light Emitting Diode), it would see logical that over time, the TVL descriptor will eventually lose out to the more familiar digital “pixel” resolution (for example 720 X 340 pixels), but for the time being, it is well enough that you are aware that the difference exists.