What Cable must I use for CCTV Cameras?
There are 2 different cable types that one will use in CCTV namely RG59/Cat5e/Cat6. RG59 cable is a coaxial cable that will deliver video as well as power. RG59 is basically two cables that are joined together, both with separate housings in order for better quality and less interference. Cat5e is a full copper network cable. This is the same cable that is used in networks for internet. The main purpose of a network cable is to send and receive data. Cat6 is very similar to Cat5e the main difference is Cat6 is more complex for faster speed and is a lot thicker. Many Cat6 cables also include a nylon spline which helps eliminate crosstalk and unwanted interference.
Analogue cameras are the most common type of surveillance system home owners use. Analogue cameras need power as well as video connection in order for it to work. Therefore, we use a cable called RG59. This cable has two segments, one for power and one for video. This cable is a coaxial cable which is very similar to our TV and DSTV cable. Inside the RG59 cable shell you will find a coaxial cable as well as 2 separate power cables. One would connect a BNC connection on both sides of the coaxial cable which one side will plug into your DVR and the other side into the camera, and the power cable would then be connected to the camera and the other side would be connected to the power supply. The other option one can consider is using video baluns. By using video baluns you have the option of using network cable for your analogue system. A balun connection will be needed on either side of the cable 1 x balun for the DVR 1 x balun for each of the cameras. How ever one would still have to connect power separately.
The other type of camera system is what we call an IP Surveillance system. An IP Camera system is a network-based system that requires a network cable. IP CCTV cameras use a network cable that we call Cat5e or Cat6. This network cable can send video data from the camera to the NVR and this system does not require its own power supply, but instead POE (Power over Ethernet) switches are implemented. By using an IP network-based CCTV camera system you are able to save in the amount of cable that is needed, by using switches. For example, you can link 5 cameras with their own network cable to one POE switch and link that one switch to your NVR by running one cable.