NEC PX750U - Correcting Keystone Distortion

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2. Projecting an Image (Basic Operation)
 Correcting Keystone Distortion
Whentheprojectorisnotexactlyperpendiculartothescreen,keystonedistortionoccurs.Toovercomeit,youcanuse
the“Keystone”function,adigitaltechnologythatcanadjustforkeystone-typedistortion,resultinginacrisp,square
image.
Thefollowingprocedureexplainshowtousethe[KEYSTONE]screenfromthemenutocorrecttrapezoidaldistor-
tions.
Whentheprojectorisplaceddiagonallytothescreen,
Whentheprojectorissetupatanangleinrelationtothescreen,adjusttheHorizontaloptionoftheKeystonemenu
sothatthetopandbottomofsidesoftheprojectedimageareparallel.
1. Pressthe3DREFORMbuttonontheremotecontrolortheprojec-
torcabinet.
The Keystone screen will be displayed on the screen.
2. Pressthe

buttontoselect[VERTICAL]andthenusethe

or

sothattheleftandrightsidesoftheprojectedimageareparallel.
* Adjust the vertical keystone distortion.
3. Aligntheleft(orright)sideofthescreenwiththeleft(orright)side
oftheprojectedimage.
• Usetheshortersideoftheprojectedimageasthebase.
• Intherightexample,usetheleftsideasthebase.
4. Pressthe

buttontoselect[HORIZONTAL]andthenusethe

or

sothatthetopandbottomsidesoftheprojectedimagearepar-
allel.
• Adjustthehorizontalkeystonedistortion.
Screen frame
Projected area
Align left side