Other CCTV related terminology


The most common form of video connector used in CCTV.


Taking standard video signals and reducing them into compact digital data.

Dwell Time

The time duration a video switcher will stay on a camera before moving onto the next camera.

LAN Local Area Network

Communications network for electronic equipment, limited to
usually a single building or site..

GLT - Ground Loop Transformer

An isolation transformer with no direct contact between input and output.


Special covering or container to protect a camera from extreme temperatures or weather conditions.


A device that can accept a number of camera inputs and almost simultaneously display them on a single monitor and/or record them. Multiplexers can also be used to transmit multiple cameras over the same transmission medium.


An analog device used to display 4 cameras simultaneously on a single monitor.

Remote Surveillance

The ability to view your cameras from a remote location. Information is transmitted via phone line or internet


An RG-59 is a common coax cable used in CCTV applications.


TP - Twisted Pair

An electrical wire consisting of two conductors twisted around each other.

UTP - Unshielded Twisted Pair

Structured Premise Cabling permits many communication protocols to reside in the same wire bundle. Examples include voice, data, CCTV, video transmission and control.

Benefits of structured UTP cabling include:
- Better interference rejection than coaxial cable
- UTP is less expensive than dedicated coax or fibre optics
- Colour-coded cabling
- Unlimited bend radius
- Physically smaller than coaxial cable
- Easiest media to install and reconfigure
- UTP is extremely easy to terminate