Elvox 46340.F08 Manual de usuario descargar pdf (Pagina 34)

CCTV

Glossary of functions

AGC (Automatic Gain Control)

Serves to improve low-light vision, it amplifies the video signal when

it is too low. The result is clearer vision in low light conditions. The

amplification can increase the “noise” of the image, making it “grainy”.

Anti-BLOCKING

Anti-tampering function, should anyone intentionally try to black

out the front of the camera, the monitor will display the “BLOCKING

DETECTED” message.

Anti-SHIFTING

Anti-tampering function, should anyone attempt to change or move

the direction of the camera with their hands or any other object, the

monitor will display the “SHIFTING DETECTED” message.

AWB (Automatic White Balance)

Automatic correction of the white colour temperature, measured in

degrees Kelvin, which allows faithful playback and forms the basis

for constructing all the other colours in the image. This function must

always be active when shooting a scene in changing light conditions,

and it can be set manually if the lighting is always constant.

ATW (Automatic Tracing White)

Automatic tracing correction, in a very wide range, of the white colour

temperature, measured in degrees Kelvin, which allows faithful

playback and forms the basis for constructing all the other colours

in the image.

BLC (Backlight Compensation)

This function enables improving the image of subjects shot in

backlight making them visible.

DE-FOG

This function enables improving object recognition in conditions of

fog or low visibility.

DNR (Digital Noise Reduction)

This function digitally “cleans” the image of noise.

FLIP

Flips the image vertically on the screen.

HLC (High Light Compensation)

This function automatically masks the brightest parts of an image

(e.g. the headlights of a car) to get a clearer picture.

MIRROR

Flips the image horizontally on the screen.

MOTION DETECTION

This function detects changes in the shot image and generates an

alarm.

OSD (On Screen Dispay)

This system enables adjusting the camera or recorder functions, via

on-screen menus superimposed on the picture.

PRIVACY MASKING

Privacy masking is supported by most DVRs. It enables selecting

areas of a scene that can be blocked or masked from viewing and

recording. If this function is present in a speed dome, it enables

maintaining picture masking even when the field of view of the

camera changes due to vertical or horizontal rotation of the camera

or because of zooming, since the masking follows the coordinates of

the camera system.

QUICK-ZOOM

When motion is detected within a designated area, the zoom-in

function is activated to shoot the area in greater detail.

RS-485

RS-485 is the updated version of the RS-422 protocol that supports

connecting up to 32 peripheral devices through a single connection.

RS-485 indicates the electrical specifications of multi-point, half-

duplex and two-wire serial connections. This protocol provides a

cost-effective solution for configuring local networks and multidrop

communications links. It provides high throughput (up to 10 Mbit/s),

uses a balanced differential line with twisted cables (similar to those

of the RS-422 interface) and enables using relatively long cables of

1,200 metres (4,000 feet). The RS-485 protocol only specifies the

electrical characteristics for drivers and receiving units, but does not

define or recommend any specific data protocol.

SHADING

Compensates for the effects of lens shading when the lens is set to

a very wide angle. This function reduces the difference in brightness

between the centre and the edges.

SMART D-ZOOM

When motion is detected within a designated area, the zoom-in

function is activated and tracks the moving object and magnifies the

view.

SMART IR

This function eliminates image saturation on subjects illuminated by

infrared light.

WDR (Wide Dynamic Range)

This technology uses two different shutter speeds to capture two

alternate video images and combine the two fields into a frame.

It optimizes video shooting in high-contrast scenes making all the

areas of the image sharp.

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Elvox 46340.F08 Manual de usuario Pagina 34

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