White level, Styles menu, Output hdmi format – Lumagen Radiance 2143/2123 User Manual

Page 22: Rate match, Color format, Dither, Mask, Shrink, Gray level, Tyles

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Section 5 – Video Configuration

Copyright 2009-2014 Lumagen, Inc.

Radiance 2123 and 2143, Rev 041614

14

White Level

Sets the white level for the display. Normally the “Contrast” control on the display is used to set the white level. It

is recommended that the Radiance Contrast Pattern 1 (White and Black squares pattern) be used to set the

display’s white level. The command is:

MENU Output CMS’s [CMS] White Ok

Styles Menu

The Style memory stores settings for the HDMI format used to drive the display. There are menus to set the HDMI

format, size, position, aspect ratio, and graybars for the image on the display.

Output HDMI Format

You can specify the digital output range as “RGB-PC level” (e.g. for 8-bit 0 to 255) or “RGB-Video level” (e.g. for 8-

bit 16 to 235). “YCbCr 422” is the recommended output format. For the HDMI RGB output, setting the level as

video allows blacker-than-black and whiter-than-white levels to be output from the Radiance. The command is:

MENU Output Styles [Style] HDMI Format Type

(RGB-Video level, RGB-PC level, YCbCr444, YcbCr422, RGB/36bpp Dual Out)

Rate Match

Some material may be sourced at 24.00/60.00 Hertz refresh rates instead of the standard 23.98/59.94 Hertz rates.

It is desirable to slightly alter the output rate to match the input rate as long as the display works with these

different rates. The default setting is 'Off.' Use 'Off' if your display will not accept these rates.

The command is:

MENU Output Styles [Styles] HDMI Format Rate Match (No, Yes)

Color Format

Sets the outputs color format. It should be set to Auto except to correct for a color format error in the display.

Normally Bt.601 is use for SD/ED modes and Bt.709 is used for HD modes. Auto should be used for RGB sources.

The command is:

MENU Output Styles [Style] HDMI Format Color Format (Auto, Bt.601, Bt.709)

Dither

Some fixed pixel displays show contouring on images that have gradients because the physical pixel depth of each

pixel is limited. The dither control can be used to enhance the resolution of the display and reduce contouring.

Dither position sets the bit size of the pixel for dithering. Orientation controls the frame-to-frame randomization

and can be fixed of dynamic. Masking can be turned on to clear the lowest bits after the dither addition. The

command is:

MENU Output Styles [Style] HDMI Format Dither

Mask

Allows you to “blank” the edges of the video image on the output without changing its position or scaling. This is

useful to blank bad pixel data from the source that shows on screen, when you want to keep the “pixel perfect”

setup (i.e. no scaling). The command is:

MENU Output Styles [Styles] Mask/Shrink Mask

Shrink

Adjust the image size to fit inside a screen masking system. This command is useful for rear-screen and flat-panel

displays when the manufacturer uses too much “overscan”. The command is:

MENU Output Styles [Styles] Mask/Shrink Shrink

Gray Level

Sets the gray level of borders created by the shrink or output mask commands. The gray level is adjustable from

black to white in sixteen steps. The command is:

MENU Output Styles [Styles] Mask/Shrink Gray Level

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