NEC GT6000 Projecting an Image, v Correcting the Horizontal and Vertical, Tips on Adjusting Focus

3. Projecting an Image

(2)Press and hold the CTL and press the ZOOM + or - button to adjust the image size. You can also adjust the image size by using the ZOOM + or - button on the projector cabinet.

MAGNIFY

+ +

- -

FOCUS ZOOM

LENS

CTL

(3)Press and hold the CTL button and press the FOCUS + or - button to obtain the best focus. You can also adjust the focus by using the FOCUS + or - button on the projector cabinet.

MAGNIFY

++

- -

FOCUS ZOOM

LENS

CTL

Tips on Adjusting Focus

Optimum focus adjustments can be achieved on the projector by paying special attention in a few areas.

Focus adjustment after the projector has warned up to normal operating temperature is better than doing so when the projector is cold.

Lens mechanism interacts differently when adjusting focus from one direction to the other.

For this reason final focus adjustments should be done in a spe- cific direction.

For optimum focus, follow the steps below.

For the zoom and the lens shift adjustment, perform the normal procedures.

NOTE: The buttons on the remote control or the projector cabinet do not work for the focus adjustment on the GT06RLB lens. To adjust the focus for the GT06RLB lens, rotate the three screws on the lens unit. See page 2-12.

Preparation (Recommended):

Warm up the projector for about 60 minutes.

Adjusting the Focus

1.Practice focusing

Use the FOCUS (+) or (-) button on the projector or the remote control to increase or decrease the focus values to verify the accuracy of fo- cusing.

2.Try optimizing defocus

Use the FOCUS button (-) to decrease the focus values until pixel pat- terns are too blurry to be visible.

3.Obtain correct focus

Use the FOCUS button (+) to obtain the best focus. Do not use the FOCUS (-) button at this time.

Finally store the adjustments in memory.

If you adjust beyond the best focus point, go back to step 2 and repeat the procedures. Always adjust the focus from the negative direction towards the positive direction.

Geometric Correction Tool

If you use a special shaped screen such as a cylindrical or spherical screen, a downloadable program, Geometric Correction Tool is avail- able. This program (Geometric Correction Tool) enables the geometri- cal distortion correction of an image when projected onto a special shaped screen with a NEC projector. Additionally, this program al- lows control of the projector via a computer.

For additional information visit:

US : http://www.necvisualsystems.com

Europe : http://www.neceurope.com/

Global : http://www.nec-pj.com/

v Correcting the Horizontal and Vertical

Keystone Distortion (3D Reform)

Use the 3D Reform feature to correct keystone (trapezoidal) distortion to make the top or bottom and the left or right side of the screen longer or shorter so that the projected image is rectangular.

In the following description, 3D Reform (Cornerstone) correction can be done with the USB mouse, remote control or cabinet buttons.

When using the USB mouse connected to the projector

Preparation: Connect the USB mouse to the projector. See page 4-3.

1.Project an image so that the screen is smaller than the area of the raster.

2.Pick up any one of the corners and align the corner of the image with a corner of the screen. (The drawing shows the upper right corner.)

Projected image

Screen

3-4