NEC UM351W - Correcting Keystone Distortion [KEYSTONE]

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2. Projecting an Image (Basic Operation)
❻ Correcting Keystone Distortion [KEYSTONE]
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 ▼ button on the projector cabinet.
The Keystone screen will be displayed on the screen.
• PresstheKEYSTONEbuttonwhenusingtheremotecontrol.
• SeepageforPINCUSHION.
• SeepageforCORNERSTONE.
• SeepageforRESET.
2. Press the ▼buttontoselect[VERTICAL]andthenusethe◀ or ▶
so that the left and right sides of the projected image are paral-
lel.
* Adjusttheverticalkeystonedistortion.
Projected area
Screen frame
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.
Align left side