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• The KEYSTONE adjustment allows you to compensate for pictures’ horizontal trapezoidal distortion.
(Keystone adjustment can not carried out in built-in test pattern.)
Adjustment procedure
Press the MENU button. ... The MENU screen will be displayed.
Press the UP ( ) and DOWN ( ) arrow buttons to select POSITION.
Press the ENTER button. ... The POSITION screen will be displayed.
Press the UP ( ) and DOWN ( ) arrow buttons to select KEYSTONE.
Press the ENTER button. ... KEYSTONE screen will be displayed.
Press the LEFT ( )and RIGHT ( ) arrow buttons to correct horizontal
keystone (trapezoidal distortion).
• The adjustment values will change from 0 (min.) to 200 (max.)
Press the UP ( ) and DOWN ( ) arrow buttons to adjust vertical linearity.
• The adjustment values will change from 0 (min.) to 255 (max.)
• Adjust vertical linearity after adjusting horizontal keystone.
The variable range of V LINEARITY changes with the H KEYSTONE adjustment setting.
• To reset H KEYSTONE and V LINEARITY to their respective factory default settings (H KEYSTONE:100
and V LINEARITY: 25), press the Standard (STD) button on the remote control.
• H KEYSTONE and V LINEARITY settings are reflected to other input signals as well.
• The keystone adjustment can compensate for trapezoidal distortion that corresponds to the projector’s
elevation angle (to the screen) to within ± 10 °.
• As indicated below, two types of modes can be selected for keystone correction of luminance-
bandwidth-chrominance (YUV) signals (For the RGB system, there is only keystone correction using
digital processing).
YUV KEYSTONE:REAL: The original images are preserved as they are after keystone compensation
thanks to digital processing.
YUV KEYSTONE:BLANKING: Keystone correction is done with blanking, so part of the image
information is lost, but there is no image degradation.
(In BLANKING mode, the adjustment range in blanking adjustment (page 52) is 0 to 255).
–
Adjusting the keystone(Trapezoidal distortion)
Press and hold the right arrow button
until both sides of the frame become
completely vertical. In case of over-
adjustment, use the left arrow button to
step back.
<For keystone distortion broadened toward the bottom when YUV keystone : blanking>
<REAL mode>
<BLANKING mode>
YUV signals: Includes the Video Signal module, Digital Serial Signal module, analog YPBPR(YCbCr) input, and
analog RGB input all placed in RGB REALITY mode.
NOTE