IBM MM50 Monitor
(250-0464) Operation Faxback Doc. # 36999
The computer uses software to control the way in which the image is
displayed on the screen. This software is supplied as part of your
computer operating system.
The way in which the image is displayed on the monitor screen is called
the Display Mode and it is governed by two main factors, the Addressability
and the Refresh Rate.
Addressability is the number of horizontal and vertical picture elements
(pels) that form the screen image, e.g. 800 x 600.
Refresh Rate is the number of times per second that the screen image is
"repainted" by the computer, e.g. 72 Hz.
Display Modes can be either "Interlaced" or "Non-interlaced". Noninter-
laced display modes are preferable to minimize flicker.
Your high performance, multi-frequency monitor can support a wide range of
display modes. For the display modes listed in Table 1 on page 5, the
screen image has been optimized during manufacture.
NOTE: Best overall performance may not be achieved using the highest
addressability of your video adapter. For example, 800 x 600
at 75 Hz may be preferable to 1024 x 768 at 60 Hz. If possible,
try different display modes to see which one suits you best.
How to change display modes
Refer to your computer system user guide, operating system user guide
and video adapter guide for details on how to change the display mode.
To ensure flicker-free operation select the highest (non-interlaced)
refresh rate both the computer and the monitor can support, (generally
72 Hz or higher), for the addressability that your application requires.
After selecting the display mode, you do not need to perform this operation
configuration.
The image size, position and shape may change when the display mode
changes. This is normal and the image can be readjusted using the monitor
controls (see the User controls section on page 6).
Addressability Refresh Horizontal Notes
Rate Frequency
720 x 400 70 Hz NI 31.5 kHz DOS Prompt
640 x 480 60 Hz NI 31.5 kHz VESA
640 x 480 75 Hz NI 37.5 kHz VESA
640 x 480 85 Hz NI 43.3 kHz VESA
800 x 600 72 Hz NI 43.3 kHz VESA
800 x 600 85 Hz NI 53.7 kHz VESA
1024 x 768 75 Hz NI 60.0 kHz VESA
1024 x 768 85 Hz NI 68.7 kHz VESA
Table 1. Factory Set Display Modes.
User controls
The diagram below shows the controls on the front of your monitor.
Button Menu displayed No menu displayed
1 Mute Turns the on-screen Alternately mutes
display (OSD) off. and restores sound.
2 Select Selects function or Selects the
moves to next function. Powerscreen menu.
3 Down Moves down a menu Decreases speaker
(DOWN ARROW) or decreases a volume.
function setting.
4 Up Moves up a menu or Increases speaker
(UP ARROW) increases a function volume.
setting.
5 Menu Selects next menu. Turns the on-screen
display on.
6 Power Switches the monitor on and off.
On Screen Menus
The image is already optimized for many display modes, however the user
controls can be used to adjust the image to your liking. Each adjustment
is supported by an on-screen display (OSD), showing the position of the
adjustment within its overall range.
Your changes will be stored automatically in one of 12 user mode memories.
The monitor controls are contained in 4 basic menus as follows. Each menu
is selected by pressing button 5 the required number of times.
Main Control Menu Contains basic image and sound
(Button 5 once) controls.
Color Control Menu Contains controls to adjust the image
(Button 5 twice) colors.
Geometric Menu Contains controls to adjust the shape
(Button 5 three times) and alignment of the image.
Utility Menu Contains controls for power saving,
(Button 5 four times) motion graphic, status.
To turn the OSD off at any time, press button 1.
Selecting a Control
After the appropriate menu is displayed on the screen, it is necessary to
select a control for adjustment. To select the required menu, press
buttons 3 or 4. When the required control is highlighted, press button
2 to select it. An on-screen display, relevant to the control will
appear. Use buttons 3 or 4 to adjust the control.
Power Screen Menu
The power screen menu shows one or other of the following controls.
Pressing button 2 repeatedly alternates between the 2 displays.
Normal Screen Used for most applications.
Power Screen Enhances the image for motion video
graphics.
Main Control Menu
The main control menu contains the following controls:
Contrast Adjusts the contrast.
Brightness Adjusts the background brightness.
H. Position Moves the screen images left and right.
H. Size Adjusts the image width.
V. Position Moves the screen image up and down.
V. Size Adjusts the image height.
Volume Adjusts the speaker volume.
Color Control Menu
The color control menu contains the following controls:
Red Gain Adjusts the red content of the image.
Green Gain Adjusts the green content of the image.
Blue Gain Adjusts the blue content of the background.
Red Bias Adjusts the red content of the background.
Green Bias Adjusts the green content of the background.
Blue Bias Adjusts the blue content of the background.
Preset Color Allows the user to switch between the two factory
preset color settings and one user color setting.
Geometric Menu
The geometric menu contains the following controls:
Pincushion Minimizes the amount of curvature on the vertical
edges of the image.
Trapezoid Adjusts the width of top of image in relation
to bottom.
The following controls are on the IBM 7097 monitor only.
Pin Corner Adjusts the curvature of the vertical edges in
the corners.
Pin Balance Adjusts the balance of the curvature of the
vertical edges.
Parallelogram Adjusts the angle of the vertical sides
of the image.
Utility Menu
The Utility menu contains the following controls:
Power Saving Allows the monitor to save energy when it has
not been used for a specified time.
Degauss Allows the monitor to clear image color
distortion caused by local magnetic influences.
System Spec Displays the maximum horizontal and vertical
frequencies that the monitor can support.
Status Displays the horizontal and vertical frequencies
of the display mode the monitor is using.
Recall Recalls the factory preset values for the display
mode the monitor is using.
If the display mode is not one of those listed
in Table 1 on page 5, this control has no effect.
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