Controllability Of The Projected Image; Hiding The Image - ViewSonic LS920WU User Manual

Controllability of the Projected Image

By using the lens shift knobs on the projector , you can adjust the vertical lens
shift by +/- 50% or horizontal lens shift by +/-50%, which offers the convenience
of not needing to physically move or interact with the projector. This is especially
important when the projector is mounted to the ceiling.

Hiding the Image

In order to draw the audience's full attention to the presenter, you can press Blank
on the projector or remote control to hide the screen image. Press any key on the
projector or remote control to restore the image.
CAUTION:
Do not block the projection lens as this could cause the blocking object to
become heated and deformed or even cause a fire.
31