Stacking Projectors - NEC NP-PH1000U User Manual

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 amplifier 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 sufficient 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.
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6. Installation and Connections
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