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Display: Dell Latitude CPx H-Series/J-Series User's Guide
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Display: Dell™ Latitude™ CPx H-Series/J-Series
User's Guide
To accommodate local lighting conditions or video output from the
software you are using, you can use the key combinations shown in Table
1.
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NOTE: When you run the computer on battery power,
set your computer's brightness control to the lowest setting that affords comfortable
viewing. You can conserve up to 10 percent of battery power by using the minimum
brightness setting.
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Table 1. Brightness Key Combinations
and Their Functions
| Key Combinations |
Function |
| <Fn> + down arrow |
Decreases brightness |
| <Fn> + up arrow |
Increases brightness |
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NOTES: You cannot change contrast on an
active-matrix (thin film transistor [TFT]) display. To
use key combinations on an external keyboard, enable the External Hot Key
option in the System Setup program and use <Scroll Lock> instead of <Fn>. |
When working in text mode, you can select the font used to display
text. Press <Fn><F7> to toggle between a regular serif font and a serif font
with extra leading. Expanded video mode is useful if you are working in 800 x 600
resolution on a 14.1-inch XGA display.
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NOTE: You may have trouble using the display fonts
feature with MS-DOS® programs that use downloaded fonts. |
The Dell-installed video drivers work with the operating system to
let you customize the video resolution and number of screen colors on your display.
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NOTE: The Dell-installed video drivers are
designed to offer the best performance on your computer. Dell recommends that you use only
these drivers with your factory-installed operating system. |
Table 2 lists the combinations of resolutions and colors that the
computer supports.
Table 2. Display Resolution, Colors, and Refresh Rates
| Resolution |
Color
Depth |
External
CRT Display
Available Refresh |
Television
as Secondary Display
Available Refresh |
| 640 x 480 (VGA) |
256 (8-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 640 x 480 (VGA) |
65 k (16-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 640 x 480 (VGA) |
16 M (24-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 640 x 480 (VGA) |
4.2 B (32-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
|
|
|
|
| 800 x 600 (SVGA) |
256 (8-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 800 x 600 (SVGA) |
65 k (16-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 800 x 600 (SVGA) |
16 M (24-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 800 x 600 (SVGA) |
4.2 B (32-bit) |
60, 75, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
|
|
|
|
| 1024 x 768 (XGA) |
256 (8-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1024 x 768 (XGA) |
65 k (16-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1024 x 768 (XGA) |
16 M (24-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1024 x 768 (XGA) |
4.2 B (32-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
|
|
|
|
| 1280 x 1024 (SXGA)* |
256 (8-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1280 x 1024 (SXGA)* |
65 k (16-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1280 x 1024 (SXGA)* |
16 M (24-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
| 1280 x 1024 (SXGA)* |
4.2 B (32-bit) |
60, 70, 75, 85
Hz |
60 Hz NTSC, 50
Hz PAL |
|
|
|
|
| 1600 x 1200 (UGA)* |
256 (8-bit) |
60
Hz, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 1600 x 1200 (UGA)* |
65 k (16-bit) |
60
Hz, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 1600 x 1200 (UGA)* |
16 M (24-bit) |
60
Hz, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
| 1600 x 1200 (UGA)* |
4.2 B (32-bit) |
60
Hz, 85 Hz |
60 Hz NTSC, 50
Hz PAL |
*NOTE: Pan mode may be turned on for the 1280 x 1024
(SXGA), 1400 x 1050 (SXGA Plus), and 1600 x 1200 (UGA) computer displays. In pan mode the
screen resolution is too high to be completely displayed on the computer display. For
example, the taskbar that usually appears at the bottom of the desktop may no longer be
visible. To view the rest of the screen, use the touch pad or track stick to pan up and
down and left and right.
NOTICE: Before adjusting the refresh rate on an external monitor, refer to the
monitor's user's guide. You can damage the monitor by using an unsupported refresh rate.
To display more colors, select a lower resolution. If you select a
resolution and color combination that the system does not support, the system
automatically selects the next supported combination.
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NOTE: Color depth is based on 256 colors for 8
bit, 65,536 colors for 16 bit, 16,842,752 colors for 24 bit, and 4,294,967,296 colors for
32 bit displays. |
Table 3 lists the maximum color depth possible for various
combinations of resolutions without DVD and 3D.
Table 3. Display Resolution and Color Depth Without DVD and
3D Running
| |
Maximum
Color Depth Possible (in bits) |
| Primary/Secondary |
640 x 480 |
800 x 600 |
1024 x 768 |
1280 x 1024 |
| 640 x 480 (8 bit) |
32 |
32 |
32 |
32 |
| 800 x 600 (8 bit) |
32 |
32 |
32 |
32 |
| 1024 x 768 (8 bit) |
32 |
32 |
32 |
32 |
| 1280 x 1024 (8 bit) |
32 |
32 |
32 |
32 |
| 1600 x 1200 (8 bit) |
32 |
32 |
32 |
32 |
| text |
text |
t |
t |
t |
| 640 x 480 (16 bit) |
32 |
32 |
32 |
32 |
| 800 x 600 (16 bit) |
32 |
32 |
32 |
32 |
| 1024 x 768 (16 bit) |
32 |
32 |
32 |
32 |
| 1280 x 1024 (16 bit) |
32 |
32 |
32 |
32 |
| 1600 x 1200 (16 bit) |
32 |
32 |
24 |
24 |
| t |
t |
t |
t |
t |
| 640 x 480 (24 bit) |
32 |
32 |
32 |
32 |
| 800 x 600 (24 bit) |
32 |
32 |
32 |
32 |
| 1024 x 768 (24 bit) |
32 |
32 |
32 |
32 |
| 1280 x 1024 (24 bit) |
32 |
32 |
32 |
24 |
| 1600 x 1200 (24 bit) |
24 |
24 |
16 |
8 |
| t |
t |
t |
t |
t |
| 640 x 480 (32 bit) |
32 |
32 |
32 |
32 |
| 800 x 600 (32 bit) |
32 |
32 |
32 |
32 |
| 1024 x 768 (32 bit) |
32 |
32 |
32 |
24 |
| 1280 x 1024 (32 bit) |
32 |
32 |
24 |
16 |
| 1600 x 1200 (32 bit) |
8 |
8 |
-- |
-- |
- Click the Start button, point to Settings, and then
click Control Panel.
The Control Panel window appears.
- Double-click the Display icon.
The Display Properties window appears.
- Click the Settings tab, and then set the resolution by
dragging the slider in the Screen Area box. In the Colors box, choose the
number of colors from the menu provided. For more information, see your operating system
documentation.
If you choose a resolution or color palette that is higher than the display supports, the
settings adjust automatically to the closest possible setting.
With the Microsoft® Windows® 98 operating system, you can use an
external monitor as an extension of your display. To set up your computer for
dual-display mode, perform the following steps:
- Connect the external
monitor, TV, or projector.
- Click the Start button, point to Settings,
and then click Control Panel.
- In the Control Panel window, double-click the Display
icon.
- In the Display Properties window, click the Settings
tab.
- Change the Colors option to 256 Color
or True Color (24 bit).
- Change the Screen Area to the appropriate size for
your display.
- Click the Advanced... button.
- When the RAGE MOBILITY -M1 Properties window
appears, select the Displays tab.
- Click the Monitor button.
The dual display option is activated.
- Click Yes when prompted to restart your system.
- When the system has restarted, reopen the Display
icon in the Control Panel.
- Click the Settings tab.
Two displays now appear in this window.
- Click the display that is grayed out. When asked if you want to
enable this display, click Yes, and then click Apply.
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NOTE: True Simul-mode (the ability to
simultaneously display video of the same content and resolution on both the computer
display screen and the external display) is not supported if the system is booted to
MS-DOS®, using a full-screen MS-DOS session under a Microsoft Windows operating
system, or the ATI Mobility M1 video driver is not loaded. This limitation may also
be noted in operating systems other than Microsoft Windows. |
If your computer is receiving power, but nothing appears on your
display (such as light, text, or graphics) or the display image does not appear as you
would expect, try the following measures to resolve the problem:
- If the display is blank, you may be in suspend or standby mode. Press
the power button to resume from suspend mode or standby mode. If the display is blank and
the power light-emitting diode (LED) is on, the display may have timed out. In this case,
press any key on the keyboard or move the mouse to resume normal operation.
- If the low-battery light is blinking, connect the AC adapter to the
computer or replace the battery.
- Adjust the brightness.
- If your computer is attached to an external monitor, press
<Fn><F8> to switch the video image to the display.
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