VarTech Systems VT190R Betriebsanweisung PDF herunterladen (Seite 18)

The Utility submenu contains the following functions:

Navigation Buttons Menu Item Explanation

On a CRT monitor, the brightness control is really a black level

adjustment and is set so that the background raster is just cut

off when a black screen is displayed. On an LCD monitor, the

brightness control is a control of the backlight luminance level.

Both black and white levels change with changes in backlight

luminance. When setting this control, the analog luminance

control should be set full clockwise (maximum). The setting of

this control then becomes a limit on the range of the analog

luminance control.

Contrast

The contrast adjustment is an adjustment of the gain of the

monitor’s video amplifiers, or, in other words, of the range in

luminance between black and white. When analog video is

presented to the monitor, a black to white transition is

represented, ideally, by a voltage transition of 0.7V.

PIP Mode

PIP means “picture in picture”. PIP mode is available only

when both an RGB video source (digital or analog) and an

NTSC/PAL video source (S-video or composite video) are

connected to the monitor. The current version of the product

does not support this function.

Use the UP or DOWN button to select the desired function.

Use the LEFT or RIGHT button to set the value of the selected

function. Use the SOURCE button once a setting has been made, and

again to return to the Main Menu.

Brightness

Scaling Mode

When the format of the video presented by the external source

does not correspond to the monitor’s native format the image

is displayed in one of three ways: 1) it is scaled to fit the

screen, 2) it is scaled up, but the aspect ratio is preserved,

3) it is not scaled, but mapped to the screen pixel for pixel.

Fill All: Scaling an image so that it fills the screen provides

the largest usable image. However, when the aspect ratio of

the image does not correspond to the aspect ratio of the

screen its original aspect is lost. Thus, if it contains circles,

they can look like ellipses after scaling.

Fill Aspect: Scaling an image up while preserving aspect

ratio ensures that the original image is presented without ma-

jor distortions. However, in this case, the image might not fill

the screen entirely. It will fill the screen horizontally, but not

vertically.

1:1: For very exacting applications, usually applications

involving the display of very fine text or symbols, in which no

scaling artifacts can be tolerated, it might be desirable not to

scale the image but to map it pixel for pixel to the display. In

this case, the image might fill only a small area of the display,

leaving black at right and left as well as at top and bottom. But

note that the scaling engine in this monitor can be adjusted to

minimize artifacts using the SHARPNESS control on the

Picture menu.

3.8

Quick Menu

RIGHT

LEFT

DOWN

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