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Acer P3251 User Manual

Page 30

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Note: "H. Position", "V. Position", "Frequency" and "Tracking" functions

are not supported under HDMI or Video mode.

Note: "Sharpness" function is not supported under HDMI or computer

mode.

Note: 3D function is supported for specific timings of VGA/DVI/HDMI and

Component/VIDEO/S-VIDEO sources. Please see timing tables for detail 3D

timings.

Note: It needs correct settings on graphic card 3D application program for

Aspect Ratio

Use this function to choose your desired aspect ratio.

Auto: Keep the image with original width-higth ratio and maxi

mize the image to fit native horizontal or vertical pixels.

4:3: The image will be scaled to fit the screen and displayed using

a 4:3 ratio.

16:9: The image will be scaled to fit the width of the screen and

the height adjusted to display the image using a 16:9 ratio.

Auto Keystone

Automatically adjusts vertical image.

Manual Keystone Adjust image distortion caused by tilting projection. (±40 degrees)

The Manual Keystone funcion is unavailable under Auto

Keystone setting to "On".

H. Position

(Horizontal

position)

Press

to move the image left.

Press

to to move the image right.

V. Position

(Vertical position)

Press

to move the image down.

Press

to move the image up.

Frequency

"Frequency" changes the projector's refresh rate to match the

frequency of your computer’s graphics card. If you can see a vertical

flickering bar in the projected image, use this function to make the

necessary adjustments.

Tracking

Synchronizes the signal timing of the projector with the graphics card.

If you experience an unstable or flickering image, use this function to

correct it.

Sharpeness

Adjusts the sharpness of the image.

Press

to decrease the sharpness.

Press

to increase the sharpness.

3D

Choose "On" to enable DLP 3D function.

On: Choose this item while using DLP 3D glasses, quad buffer
(NVIDIA/ATI…) graphic card and HQFS format file or DVD with

corresponding SW player.

Off: Turn off 3D mode.

3D Sync L/R

If you see a discrete or overlapping image while wearing DLP 3D

glasses, you may need to execute "Invert" to get best match of left/

right image sequence to get the correct image (for DLP 3D).