Bosch EX65 Instruction Manual download pdf (Page 28)

EX65 Explosion-protected Illuminator Glossary | en 29

Bosch Security Systems, Inc. Instruction Manual F.01U.162.949 | 1.0 | 2011.03

Region of Interest

A specific area within a field of view, used by the motion detection algorithm to identify

motion.

Resolution

The measure of the fine detail that can be seen in an image. For analog systems this is

typically measured in horizontal Television Lines or TVL. The higher the TVL rating, the higher

the resolution.

Saturation

The amplitude of the chrominance signal affecting the vividness of the color.

Sensitivity

A measure of the amount of light required to provide a standard video signal. Sensitivity

values are stated in lux (see Lux).

SensUp (sensitivity up)

Increases camera sensitivity by increasing the integration time on the CCD (lowering shutter

time from 1/50 to 1/5 s). This is accomplished by integrating the signal from a number of

consecutive video fields to reduce signal noise.

Signal-to-noise ratio

The ratio between a useful video signal and unwanted noise measured in dB.

Smart BLC (Back Light Compensation)

Smart back-light compensation allows the camera to automatically compensate for bright

areas of a high contrast scene without having to define a window or area.

UTP (Unshielded Twisted Pair)

A variant of twisted pair cabling, UTP cable is not surrounded by any shielding. The wires in a

twisted pair cable are twisted around each other to minimize interference from the other

twisted pairs in the cable. UTP is the primary wire type for telephone usage and the most

commonly used type of networking cable.

VMD Video Motion Detection: An algorithm for motion detection in which the camera compares the

current image with a reference image and counts the number of pixels that have changed

between the two images. An alarm is generated when the number of pixel changes exceeds a

user-configured threshold.

WDR (Wide Dynamic Range)

A camera’s dynamic range is the difference between the minimum and maximum acceptable

signal levels. A scene with both very low and very high illumination levels requires a camera

with a wide dynamic range to handle it correctly and produce a useful image.

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Bosch EX65 Instruction Manual Page 28