NEC 40,000-Lumen 4K Laser Installation Projector - Manual (Page 74)

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This projector can be used singly or arranged in multiple units for multi-screen projection.
❶
Things that can be done using multi-screen projection
Case 1
Using a single projector to project two or four types of videos at the same time [PICTURE BY PICTURE]
Connection example and projection image
Projecting two types of images
(Input) (Input)
(Input)
(Input)
(Input)
(Input)
Projecting four types of images
Case 2
Lien up multiple projectors to project a high-resolution image in a larger screen. [TILING]
Connection example and projection image
A video splitter
4. Multi-Screen Projection