NEC PX1004UL-WH - Page 174

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6. Installation and Connections
Stacking projectors
Theprojectedimagebrightnesscanbedoubledbygravitystackinguptotwoprojectorswithoutexternalsupport.
Thisiscalled“StackingProjection”.
2projectorscanbestackedontopofeachotherfor“Stacking”setup.
CAUTION:
• Aminimumoftwopersonsarerequiredtocarrytheprojector.Otherwisetheprojectormaytumbleordrop,caus-
ingpersonalinjury.
• Gripthehandlesformovingtheprojector.
NOTE:
• Projectorswithdifferentmodelnumberscannotbegravitystacked.
Optional lenses with the same model numbers must be used for stacking projection.
• Forstackingprojectors,attachthesuppliedfourstackingholderstothetopofthelowerprojector.(→ nextpage)
• Itdoesnotsupportoverlayaccuracybystackedprojectors.Preciseimagesassmalltextsanddetailedgraphicscannotbeclearly
read or seen.
• Useacommerciallyavailabledistributionampliertoboththeprimary(upper)andthesecondary(lower)projectorstodistribute
signal to two outputs of the two projectors.
• Notesforstacking
- Askyourservicepersonforsettingupandadjustingprojectors.
- Setuptheprojectorsinaplaceorstructureinawaywithsufcientstrengthtosupportthecombinedweightofthetwoprojec-
tors.Thesingleprojectorwithalensweighsuptoapproximately32kg/70lbs.
- Topreventtheprojectorsfromfalling,fastentheminawaytowithstandearthquakes.
- Doublestackingwillcauseroomtemperaturetoincrease.Ventilatetheroomwell.
- Donotattempttostackprojectorsontheceiling.Gravitystackingcannotbedoneontheceiling.
- Warmuptheprojectorsforonehourbeforethedesiredprojectionisobtained.
- Makesurethatthepositionoftheupperprojectordoesnotexceeditsspecications.Whensettingupthetwoprojectors,
adjustable height range for the tilt foot on the upper projector is added to the total adjustable range.
- Setuptheprojectorssothattheprojectedimageshowsaslittlegeometricdistortionsaspossible.Thelensisdifferentin
geometricdistortionbetweenwide(+)andtele(−)forzoom.
- Adjustthehorizontallensshifttothelenscenter.
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