Silicon Graphics GDM-5411, Service Manual, Page: 10 / 59

1-5
12
Adjusting the color of the picture
(COLOR)
The COLOR settings allow you to adjust the picture’s color
temperature by changing the color level of the white color field.
Colors appear reddish if the temperature is low, and bluish if the
temperature is high. This adjustment is useful for matching the
monitor’s color to a printed picture’s colors.
1 Press the button.
The main MENU appears on the screen.
2 Press the
m / M buttons to highlight COLOR and
press the button again.
The COLOR menu appears on the screen.
3 Press the <
/
,
buttons to select the adjustment
mode.
There are three types of adjustment modes, EASY, EXPERT
and sRGB.
4 First press the m / M buttons to select the desired
adjustment item. Then press the
<
/
,
buttons to
make the adjustment.
Adjust the selected mode according to the following
instructions.
EASY mode
EXPERT mode
You can make additional adjustments to the color in greater detail
by selecting the EXPERT mode.
Setting the color temperature for each of the
video input connectors
You can set the fine tuning of the color temperature in EASY or
EXPERT mode for each of the video input connectors (INPUT 1
and INPUT 2).
1 Select the same adjustment mode and color
temperature in the COLOR menu for both INPUT 1
and INPUT 2.
2 Fine tune the color temperature in each menu for
INPUT 1 and INPUT 2.
The settings are stored in memory for each of the INPUT 1
and INPUT 2 connectors.
For information on how to select the connector, see page 7.
1 First press the m / M buttons to select the color
temperature row 1 , then press the < / , buttons
to select a color temperature.
The preset color temperatures are 5000K, 6500K, and 9300K.
Since the default setting is 9300K, the whites will change
from a bluish hue to a reddish hue as the temperature is
lowered to 6500K and 5000K.
2 If necessary, fine tune the color temperature.
First press the m / M buttons to select the color
temperature adjustment row 2 , then press the < /
, buttons to fine tune the color temperature.
If you fine tune the color temperature, the new color settings
are stored in memory for each of the three color temperatures
and item
1
of the on-screen menu changes as follows.
• [5000K]
t
[ 1]
• [6500K]
t
[ 2]
• [9300K]
t
[ 3]
EASY EXPERT s B G R
5 0 0 0 K 6 5 0 0 K 9 3 0 K 0
5 0 K 0 0
CO LOR
RE TURN
ON
CO LOR
1 Press the m
/
M
buttons to select the color
temperature row
1
, then press the
<
/
,
buttons
to select a color temperature.
2 Press the
m / M buttons to select the adjustment item
2
, then press the
<
/
,
buttons to adjust the BIAS
(black level).
This adjusts the dark areas of an image.
3 Press the m
/
M
buttons to select the adjustment item
3 , then press the < / , buttons to adjust the GAIN
(white level).
This adjusts the light areas of an image.
You can adjust the R (red), G (green), B (blue) component of
the input signal when making changes to items
2
and
3
.
If you fine tune the color temperature, the new color settings
are stored in memory for each of the three color temperatures
and item
1
of the on-screen menu change as follows.
• [5000K]
t
[ 1]
• [6500K]
t
[ 2]
• [9300K] t [ 3]
EASY EXPERT s B G R
5 0 0 0 K 6 5 0 0 K 9 3 0 K 0
R B I AS 0 5
G B I AS 0 5
B B I AS 0 5
R GA I N 0 5
G GA I N 0 5
B GA I N 0 5
CO LOR
13
GB
sRGB mode
The sRGB color setting is an industry standard color space
protocol designed to correlate the displayed and printed colors of
sRGB compliant computer products. To adjust the colors to the
sRGB profile, simply select the sRGB mode in the COLOR menu.
However, in order to display the sRGB colors correctly (
γ
=2.2,
6500K), you must set your computer to the sRGB profile and
adjust the brightness (
) and contrast (
6
) to the numbers shown
in the menu. For information on how to change the brightness
(
) and contrast (
6
), see page 9.
Note
Your computer and other connected products (such as a printer), must be
sRGB compliant.
Restoring the color from the EASY or sRGB menus
The colors of most display monitors tend to gradually lose brilliance
over several years of service. The COLOR RETURN feature found
in the EASY and sRGB menus allows you to restore the color to the
original factory quality levels. The explanation below explains how
to restore the monitor’s color from the EASY menu.
1 Press the <
/
,
buttons to select EASY or sRGB
mode.
2 First press the m
/
M
buttons to select (COLOR
RETURN), then press the
,
button.
The picture disappears while the color is being restored (about
2 seconds). After the color is restored, the picture reappears
on the screen again.
Notes
• Before using this feature, the monitor must be in normal operation
mode (green power indicator on) for at least 30 minutes. If the monitor
goes into power saving mode, you must return the monitor to normal
operation mode and wait for 30 minutes for the monitor to be ready.
You may need to adjust your computer’s power saving settings to keep
the monitor in normal operation mode for the full 30 minutes. If the
monitor is not ready, the following message will appear.
• The monitor may gradually lose its ability to perform this function due
to the natural aging of the picture tube.
Additional settings (OPTION)
You can manually degauss (demagnetize) the monitor, change the
menu position, and lock the controls.
1 Press the button.
The main MENU appears on the screen.
2 Press the
m / M buttons to highlight OPTION and
press the button again.
The OPTION menu appears on the screen.
3 Press the m
/
M
buttons to select the desired
adjustment item.
Adjust the selected item according to the following
instructions.
Degaussing the screen
The monitor is automatically demagnetized (degaussed) when the
power is turned on.
To manually degauss the monitor, first press the m / M
buttons to select (DEGAUSS). Then press the ,
button.
The screen is degaussed for about 2 seconds. If a second degauss
cycle is needed, allow a minimum interval of 20 minutes for the
best result.
Changing the menu’s position
Change the menu’s position if it is blocking an image on the
screen.
To change the menu’s on-screen position, first press
the
m / M buttons to select (OSD H POSITION) for
horizontal adjustment, or (OSD V POSITION) for
vertical adjustment. Then press the < / , buttons to
shift the on-screen menu.
Locking the controls
To protect adjustment data by locking the controls, first
press the
m / M buttons to select (CONTROL LOCK).
Then press the , button to select ON.
Only the
1
(power) switch, EXIT, and (CONTROL LOCK)
of the OPTION menu will operate. If any other items are
selected, the mark appears on the screen.
To cancel the control lock
Repeat the procedure above and set (CONTROL LOCK) to OFF.
EASY EXPERT s B G R
: 5 6 : 7 6 FOR s B G R
CO LOR
RE TURN
ON
CO LOR
EASY EXPERT s B G R
5 0 0 0 K 6 5 0 0 K 9 3 0 K 0
5 0 K 0 0
CO LOR
RE TURN
AVA I L AB L E
A F T ER WARM UP
CO LOR