The closed circuit security camera has been used for decades. But when the digital world began to affect the digital video security and surveillance world, it opened up numerous new features never available before that made this type of system versatile, powerful, and simple and easy to use.
It’s not always easy to hire an agency to provide 24 hour 7 days a week construction surveillance. However, the need still arises because construction locations are prime targets for vandalism and theft, especially at night when the work has stopped and no one else is around.
A CCTV multiplexer or Closed Circuit TeleVision Multiplexer allows more than on camera to be connected to the unit but only one output at a time is allowed through the unit. Most Digital Video Recorder or DVR units have this function built right in to the DVR. Another way to describe a multiplexer is by its function which is to combine various input signals and generate only one output signal. You can almost think of a CCTV Multiplexer as being similar to a computer router.
Digital video security cameras come in all shapes and sizes and with different degrees of resolution, often using the phrase “TVL Camera” such as a 550 TVL Camera. What does TVL mean and how does it relate to digital video security cameras? We’ll answer that question and more in the following article.
One of the most popular digital video security system features is the zoom CCTV or Closed Circuit TeleVision. There are many different types of Zoom CCTV cameras designed for a multitude of uses; be sure when shopping for one that you get the features you need.
Why buy surveillance cameras? Because in this day and age you need as much protection and security as you can get at home or at work and a digital video surveillance camera system is just the right tool for the job.
It’s almost impossible to believe that a retailer, especially one with a large store, doesn’t have store surveillance cameras. No matter what type of business, store surveillance cameras can help you maintain loss prevention while at the same time preventing the need for an elaborate and possibly costly security department.
There are very few things in the digital video security and surveillance system industry that are more versatile than a Pan-Tilt-Zoom or PTZ Web camera. These cameras merge the technological wonders of digital cameras with the speed and omnipresence of the Internet to yield an inexpensive, versatile monitoring tool.
Most digital video security systems today are designed for use with an LCD video camera monitor. There are a few reasons for this, but there are also reasons why it may be difficult to use an LCD monitor. In the following article will discuss LCD monitors how they differ from CRT (Cathode Ray Tube) monitors and some of the advantages of using them instead of a CRT.
We are asked quite often about the security camera CCD (Charged Coupled Device) and the CMOS or Complementary Metal Oxide Semiconductor. In the following article we’ll discuss how a digital video system actually works and what importance a security camera CCD has within this system.
Sometimes a good digital video image for security and surveillance purposes isn’t enough; that’s when a security camera with audio is needed for the job. Today many digital video cameras as well as the Digital Video Recorders or DVRs include audio as an option. If audio is an integral part of your system, be sure to check the camera’s specifications to verify that it is audio ready.
Security video software is a very broad term that can be used for many different functions. Security software is normally a responsibility of the Digital Video Recorder (DVR) as this is where the main computer processor and Digital signal processor are found.
Although the cable used for digital video security systems does not carry a high voltage charge, coax surge protection is still required to protect your system from lightening and even overzealous power outages, and power surges. If a surge makes its way to the camera or to the DVR your system could be destroyed.