Bolide Full Product Catalog

Easy iPac Installation Guide

Multi IP Cameras Installation Guide

NVMS(Network Video Management Software) Installation Guide

SVR9000s Remote Setup Guide

SVR8000 Remote Setup Guide

SVR8000 Series DVR Comparison

SVR9000s S-Box Series DVR Comparison


CCTV Glossary

The following is a list of commonly used terms related to CCTV, with a brief description of the meanings. These terms are not specific to Bolide Technology Group, they are general terms used throughout the CCTV industry. If you don't find the term you are looking for, or you find any error, please contact us.

A  B  C  D  E  F  G   H  I  J  L  M  N  P  R  S  T  V  W


Charge Coupled Device (CCD)
One of the two main types of image sensing device used in cameras. It operates by converting light energy into electrical charge.

Chrominance
This refers to the part of the video signal that contains the colour information.

C Mount Lens & CS Mount Lens
There are two main types of lens used in CCTV cameras. The C mount lens has a flange back distance of 17.5mm. The CS mount lens has a flange back distance of 12.5mm. C mount lenses therefore have a longer focal distance.CS mount became widely used, because it its more practical for many of today's more compact cameras. Lenses are often supplied with a 5mm spacer ring (sometimes called a C ring) that allows a C mount lens to be used on a CS camera. Most modern cameras are CS.

Co-Axial Cable
This refers to cable that has a central conductor, surrounded by a shield sharing the same axis. The shield can be made from a variety of materials including, braided copper, or lapped foil.There are various standards for specific types of co-axial cable. The cable used for normal CCTV installations is called RG59.

Composite Video
A full video signal that combines picture signal and synchronisation pulses.

Compression
Digital video pictures can be compressed with a number of techniques. These include: JPEG and JPEG-2000 (for still images), M-JPEG and MPEG (for moving pictures).