Nec PH1000U [186/244] Stacking projectors

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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”.

CAUTION:

Aminimumoftwopersonsarerequiredtocarrytheprojector.Otherwisetheprojectormaytumbleordrop,causing

personalinjury.

NOTE:

• Projectorswithdifferentmodelnumberscannotbegravitystacked.

Optional lenses with the same model numbers must be used for stacking projection.

• Thestackingprojectiondoesnotsupportaccuracyforoverlayingtwoimagesperfectlysothatsmalltextanddetailedgraphics

can 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46kg/101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.

- 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.