Cables and connectors for analog CCTV

Coaxial cables

For the installation of analog CCTV cameras it is necessary to use coaxial cables that can vary according to the need of the project, basically the larger the gauge of the cable, the better the transmission over long distances. Below is a diagram of a coaxial cable:
Role of each component Conductor: Transports the video signal Dielectric: Electric insulation Braid: Protects against interference Outer jacket: Plastic protection
RG-59: Can transmit black and white images at 750 feet (228m) and color images up to 650 feet (198m) away

cctv coaxial cables


Types of coaxial cables

RG-11: Can transmit black and white images at 1968 feet (600m) and color images up to 1312 feet (400m) away.
Types of coaxial cables

Bipolar coaxial cable

Bipolar coaxial cables can transmit images and power at the same time. They are widely used in small CCTV systems installations


Bipolar coaxial cables


Component Role
Central conductor Used to transport the video signal from the camera to the monitor, or digital video recorder (DVR).
Dielectric
Insulation material separating the conductor from the braid.
Braid
It is used to protect the cable from electromagnetic interference.
Power Carries power to the camera
Outer jacket Protective plastic
Always ground your system correctly, so the electromagnetic interference received by the coaxial cable can be discharged to earth.