NEC NP-PH1400U - ❻ Correcting Keystone Distortion

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2. Projecting an Image (Basic Operation)
❻ 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