Now there is a new application of this technology that allows the user to type a custom message on the video screen and then turn it on or off at will with the use of external switches or contacts. As many as ten separate messages
There is a new application of this technology that allows the user to type a custom message on the video screen and then turn it on or off at will with the use of external switches. As many as ten separate messages up to 25
When you discover tampering in a CCTV security system it normally occurs at the most vulnerable and exposed part of the system, the IP video camera. Normally the camera is mounted outside of the security of locked rooms and under the eye of the public.
Your Satellite Dish is a major part of your transmission system, and to keep it operating at maximum efficiency requires some attention. In order to know whether the Dish is performing up to its full specifications, it is necessary to keep a record of the
If you install a lot of CCTV video systems, at one time or another you have probably experienced outside interference from one or more of a number of sources. The most common interference found in CCTV systems is ground loop 60 Hertz energy originating from
First of all, what is a sine wave anyway, and why is that particular wave shape important? The exact shape of a sine wave is very important to the field of electronics because it is the only wave shape that has energy at only one
The vast majority of coaxial cables are either 50 Ohm or 75 Ohm Characteristic Impedance. This Characteristic Impedance is determined by the ratio of the diameters of the shield and core wire and the Dielectric Constant of the insulating material between the core wire and
The standard for audio was born out of the radio industries need to set a standard, and has always been related to 600 Ohms impedance with the level measured in dBm which refers to Decibel milli-Watts of power delivered to the "load". One milli-Watt =
A new type of CCTV camera has been developed to provide HD “High Definition” cameras that operate on existing 75 Ohm coaxial cable. Unlike a two way IP “Internet Protocol” HD camera that requires a network set-up and two sets of 100 Ohm twisted pair
Any new technology requires a little effort on the part of the user to learn the basics of that technology to use it effectively. This article discusses the digital HD SDI CCTV camera output signal at the physical layer.