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en | Glossary of CCTV Terms
AutoDome Modular Camera System
F01U073308 | 3.0 | 2007.09
VG4-200, VG4-300, VG4-500i Series User’s Manual
Bosch Security Systems, Inc.
Auto White Balance A feature that allows a color camera to automatically adjust its output color to give a natural
color independent of the lighting used.
AWB
See Auto White Balance.
B
Back Light Compensation
Selectively amplifies parts of the image to compensate for large contrast differences when
only a portion of the image is brightly lit (e.g. a person in a sunlit doorway).
Balun
Short for Balance/Unbalanced. A device that converts a balanced video signal (e.g. as used on
twisted pair) line to an unbalanced signal (e.g. as used on coax). In a balanced line, such as
twisted pair, both wires are electrically equal. In an unbalanced line such as coax, one line has
different electrical properties than the other.
Bilinx
A communications format that allows remote control, configuration and updates to be
performed over the video cable (Coax or Passive UTP).
Biphase
Pan/Tilt/Zoom protocol for Bosch products.
BLC
See Back Light Compensation.
C
Cable Category
Application and bandwidth rating system for UTP cabling. Categories 1 through 6 are based on
EIA/TIA-568-B standards. Category is typically abbreviated CAT. UTP Category 5, 5e, and 6 are
used for Ethernet data cabling applications. Ethernet wiring distances are limited to a
maximum of 100m (328ft.) when using UTP wiring.
Cable Compensation A technology that prevents image degradation caused by signal losses when transmitting
video over long cable lengths.
CCD
See Charged Coupled Device.
CCD Format
Indicates the size of the camera sensor used. In general, the larger the sensor, the more
sensitive the camera and the better the image quality. The format is quoted in inches, for
example 1/4” or 1/3”. See Charge Coupled Device (CCD).
CCTV
See Closed Circuit TeleVision.
Charge Coupled Device
The most common type of solid state image sensor used in CCTV cameras. The sensor
converts light energy into electrical signals.
Closed Circuit TeleVision
A video system that transmits television signals over a closed (non-broadcast) system.
Color Temperature
A measure of the relative color of illumination. Most generally used to specify the automatic
correction range of a color camera.
Configuration Tool for Imaging Devices
Bosch software used to configure and update cameras and other remote devices over video
cable using Bilinx, and to save them for later use.
CTFID
See Configuration Tool for Imaging Devices.
