NEC DT20 User Manual - Page 21
Compensating Keystone
UPC - 050927239410
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■ Compensating Keystone How to Install the Projector If the projected image is distorted, you can eliminate the distortion by doing keystone compensation. ● How to Compensate Keystone KEYSTONE Press the button (or the KEYSTONE button on the remote controller) to display the "Keystone menu." Keystone Horizontal 0 Ver tical 0 MENU SET Set standard Quit Keystone menu u Press the button to make the top of the projected image narrower. u Press the button to make the bottom of the projected image narrower. Press the v button to make the left side of the projected image narrower. Press the u button to make the right side of the projected image narrower. MENU MENU Press the button (or the button on the remote controller) to return to "0" (No compensation). NOTE • When keystone compensation is performed, the resolution at the edges of the projected image is reduced, making small characters difficult to read. To prevent this, place the projector on as level a surface as possible, and set the Keystone menu to "0" (No compensation). • As image processing is performed for keystone compensation, displayed images (characters, etc.) are displayed slightly blurred when keystone compensation is used compared with when it is not used. • When displaying an image with VGA resolution less than 640 x 480 pixels with a excessive horizontal keystone compensation may cause parts of the image to become fuzzy. See page E-25 for more information. • The degree to which keystone compensation can be adjusted depends on the image signal. • If the horizontal value is adjusted to its largest (or smallest) the vertical adjustment value can not be moved in the plus direction when doing keystone compensation. E-21