The term dB is used throughout the electronics and communications industries to specify operating levels and equipment specifications. A full understanding of this term and its relationship to levels will help you in your day to day operations.
What is it that the (CATV) Cable TV Industry knows about connectors that the (CCTV) Closed Circuit TV Industry needs to discover? The answer is the low cost, water tight, easy to install, connector used in the CATV industry. The CATV industry uses the "F"
Every CCTV technician knows that unforeseen problems can occur when they install cameras in a new location, and even swapping out one camera for another can cause a hidden problem to surface. When installing a CCTV camera in an elevator car to view the riders,
This article can be used to estimate the minimum wire gauge that must be used to at various cable pair lengths to power a camera and any required illumination. To begin with there are three major factors to consider when selecting the cable wire gauge
New IP cameras are gradually replacing the old analog cameras in exiting CCTV installations to boost the picture definition and upgrade them to the new digital technology. In some cases the running of new network cable for IP cameras is not economical or it requires
For those who are doing CCTV installations in Canada there is a ruling by the TSSA “Technical Standards & Safety Authority” Clause 5.1.2(b) of the Liquid Fuels Handling Code that states: Control equipment for the self-serve dispensers shall be located such that the self-serve attendant
Unlike coaxial cable the network cable has no external shield covering the transmission wires to prevent outside interfering signals from getting onto the wires and mixing with the signal, this is done to reduce high frequency signal loss that a ground shield would induce and
In todays world the CCTV installer has many video camera options to choose from. He can use Analog or Digital cameras with a full range of picture qualities from Standard Definition (SD) to High Definition (HD). Also the installer must consider which video format to
Now there is a new HDTV camera format that is replacing the old IP systems that is compatible with the existing 75 Ohm coaxial cable used by the analog cameras. So you can replace an analog camera with a new HD CCTV camera without having