Bosch Appliances VG4-100 user manual

24 en Glossary of CCTV Terms AutoDome Modular Camera System

AutoScaling

As the camera zooms in to increase the size of objects on the monitor screen, the pan and tilt speeds are reduced so that the relative speed on the screen remains constant for similar joystick control positions.

AutoTrack

A patented technology that integrates motion detection into the camera allowing tracking of an object and zooming in to optimize size and perspective.

Auto White Balance (AWB)

A feature that allows a color camera to automatically adjust its output color to give a natural color independent of the lighting used.

B

Back Light Compensation (BLC)

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 (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.

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 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).

CCD (Charge Coupled Device)

The most common type of solid state image sensor used in CCTV cameras. The sensor converts light energy into electrical signals.

CCTV (Closed Circuit TeleVision)

A video system that transmits television signals over a closed (non-broadcast) system.

F01U028033 1.0 2006.08 VG4-100 Series User’s Manual Bosch Security Systems, Inc.