DVDO AVLab TPG Guía de usuario descargar pdf (Pagina 27)

DVDO AVLab TPG - 4K Test Pattern Generator

DVDO AVLab TPG 27 A.04

appear ‘white’ with the details still intact. Because the contrast settings can affect brightness settings we

recommend that you check the brightness setting after making this adjustment.

Also included in the pattern are 2 needle pulses, which can be used to check CRT voltage regulation as

well as the presence of scan velocity modulation.

Note that the ISF PLUGE patterns are also an efficient way to set brightness and contrast.

Note: If you have a CRT based display, following the instructions above may yield a contrast setting

too high. If the contrast is set too high, you will get blooming and loss of details in the highlighted areas.

It is more helpful to use the two vertical lines in the test pattern. Adjust the contrast up and down

and you will notice that these lines will bend as you increase the contrast. To properly adjust contrast on

a CRT based display, decrease the contrast until the vertical lines start to straighten out. If possible, the

two lines should be straight. On some CRT, the lines may not straighten even if you turn the contrast to

its minimum. If this is the case, slowly increase the contrast to a point just before the vertical lines have

extreme bending. You have now properly set up the contrast of your display. Continue to set up

brightness as detailed above.

Color Bars: (8 iRE75, 8 IRE 100, 8x3)

The ‘Color8 Bars75’, ‘Color8 Bars100’, and 8x3 will assist in setting up the

saturation (color) and hue (tint) of your display. The ‘Color8 Bars75’ test

pattern consists of 8 vertical bars across the screen at a 75% saturation level.

The ‘Color8 Bars100’ test pattern consists of 8 vertical bars across the screen

at a 100% saturation level.

From left to right the bars are: grey, yellow, cyan, green, magenta, red, blue,

and black. To properly adjust the saturation and hue you will need to either

set your display to “blue only” mode or use a blue colored filter held in front

of your eyes. You will also need to turn off any automatic flesh tone controls on your display before

making these adjustments.

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DVDO AVLab TPG Guía de usuario Pagina 27