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Using Your Tablet-PC With a Projector

Dell™ Latitude™ XT User's Guide

  Display Positions

  Display Modes

  Changing the Display Settings for the Projector

You can use the Tablet-PC display in the notebook or tablet position and set the display orientation to either landscape or portrait. The position and orientation of the Tablet-PC display affect how a projector displays the image from the Tablet-PC. In addition to the display position and orientation, you can adjust the projected image using the Tablet-PC clone and extended desktop modes.

Display Positions

Your Tablet-PC display operates in two positions: classic notebook and tablet.

Classic Notebook

Classic notebook is the standard position with the display raised above the keyboard and touch pad. In this position, the display has a landscape orientation and you use the keyboard and touch pad as input devices.

Tablet

To use your Tablet-PC in tablet position, raise the display and rotate it 180 degrees, and then fold the display over the keyboard with the display facing upwards. In this position, you use either touch or the digitizer pen as input devices; that is, you touch the screen with either your finger or the digitizer pen.

In tablet position, the display image has a portrait orientation. You can switch the display image between portrait and landscape orientation using the Screen Rotate button. See Using Tablet Buttons for more information on the Screen Rotate button.

NOTE: When the Tablet-PC display has a portrait orientation and you are using clone mode, the projector displays an image that is rotated sideways and not viewable. To correct the displayed image, change the Tablet-PC display to landscape orientation using the Screen Rotate button or use the projector's menu options or other features to rotate the displayed image. See Using Tablet Buttons for more information on the Screen Rotate button.

Display Modes

The Tablet-PC includes the clone and extended desktop modes for adjusting the image displayed by a projector.

Clone Mode (Mirrored)

The clone mode enables the projector to display the exact image that is on the Tablet-PC display. In clone mode, the projector displays mouse cursor movement and handwriting or drawing with the digitizer pen. Clone mode is useful when using the mouse cursor as a pointing device or when you want the projector to display user activity that is occurring on the Tablet-PC.

NOTE: When you initially connect the Tablet-PC to a projector, the Microsoft Windows operating system asks you to specify default display settings. To enable clone mode, select Duplicate my desktop on all displays (mirrored). To send the Tablet-PC display to the projector, use the <Fn><F8> key combination. You can change the default display settings at a later time.

Considerations for Using Portrait or Landscape Orientation in Clone Mode

Because clone mode displays the exact image from the Tablet-PC, using the landscape or portrait orientation affects the image displayed by the projector.

Landscape is the typical orientation in clone mode and is displayed normally by the projector.

When the Tablet-PC display is in tablet position and you are using a portrait orientation in clone mode, the projector displays an image that is rotated sideways and not viewable. To correct the projected image you can:

• Use the Screen Rotate button to change the Tablet-PC display to landscape orientation. See Using Tablet Buttons for more information on the Screen Rotate button.
  
  
• Use the projector's menu options or other features to rotate the projected image.
  
  

Considerations for Display Resolution and Aspect Ratio in Clone Mode

If the projector has a lower display resolution and aspect ratio than the Tablet-PC display, then the Tablet-PC graphics subsystem uses the lowest display resolution and aspect ratio. Changing to a lower display resolution and aspect ratio alters the image quality.

For example, if the Tablet-PC has a display resolution of 1280 x 800 pixels with a 16:10 aspect ratio and the projector is using a 1024 x 768 display resolution with a 4:3 aspect ratio, then you may notice that:

• The projected image is not as sharp as it would be with a 1280 x 800 display resolution. The loss of sharpness is particularly noticeable when reading text.
  
  
• Round objects appear flattened. This alteration is a result of shifting from the 16:10 to the 4:3 aspect ratio.
  
  

Extended Desktop Mode

Extended desktop mode enables you to configure two displays that each have their own attributes. You can use the Tablet-PC display in tablet mode with portrait orientation using a 1280 x 800 resolution, and the projector can use the standard landscape orientation at a lower resolution and aspect ratio.

When using extended desktop mode, you start applications on the Tablet-PC and then "drag" the applications that you want to be viewed from the projector to the extended desktop. Extended desktop mode is useful when you want to maintain user activity on the Tablet-PC without displaying this activity with the projector.

NOTE: When you initially connect the Tablet-PC to a projector, the Windows operating system asks you to specify default display settings. To enable extended desktop mode, select Show different parts of my desktop on each display (extended). To send the Tablet-PC display image to the projector, use the <Fn><F8> key combination. You can then "drag" the applications you want to project from the Tablet-PC to the extended desktop (the projector). You can change the default display settings at a later time.

Changing the Display Settings for the Projector

To change the default display settings:

1. Open the ATI CATALYST® Control Center:
   
   
   • In Windows® Vista®, right-click the desktop and select ATI CATALYST® Control Center.
     
     
   • In Windows XP, select Start® All Programs® Catalyst Control Center® Advanced® Catalyst Control Center - Advanced.
     
     
2. Select Displays Manger under Graphics Settings.
   
   

The projector is displayed as an icon in the right-hand pane under Desktop and Display Setup.

3. Right-click the projector icon and select Clone Desktop 1 with monitor for clone mode or Extend Main onto monitor for extended desktop mode.
   
   

Afterwards, you may access these settings by using the <Fn><F8> key combination.

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