Quantum-data 802BT Bedienungsanleitung PDF herunterladen (Seite 691)

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802BT/802R Video Test Generator User Guide 681

QuartBox

Description The primary version (shown below) has a single white box in the center of active video.

The size of the box is one-half the width and height of the active video area (a quarter of

the entire active video area). The secondary version draws a black box on a white

background.

Test Brightness control adjustment

Purpose The wrong brightness setting on your monitor may cause other tests such as Contrast,

Focus, and Beam Size to be invalid. An accurate brightness setting helps give repeatable

measurements throughout other tests. This version of the brightness box should be used if

the display’s specifications call for the brightness to be set with one-fourth of the screen lit.

Method Place your light meter probe within the center box and adjust the monitor’s brightness

control to obtain the required light meter reading.

Notes The color of the center box is a special color, named foreground. The FRGB command

can be used to change the default color of foreground to any RGB value.

IMGL quartbox: ALLU // loads QuartBox image

FRGB 122 122 122 // sets RGB color of box

After loading a different format, send the FRGB command again to set the box fill color.

If you want to draw your own box, use foreground as the fill color, and then use the FRGB

command to define the color of “foreground.” For example:

IMGL raster; ALLU // clears display

RECT foreground 100 100 100 100 dither100

FRGB 128 128 0

FRGB 192 192 64

1 2 ... 686 687 688 689 690 691 692 693 694 695 696 ... 743 744

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