Epson 821p - PowerLite XGA LCD Projector Информация о продукте - Страница 3

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Epson 821p - PowerLite XGA LCD Projector Информация о продукте

Positioning the Projector

Before connecting the projector, you need to decide where to
place it. The location you choose depends on the size of the
room and what you are projecting.
❏ Place the projector on a sturdy, level surface, between
2.8 and 48.3 feet from the screen.
❏ Make sure there is plenty of space for ventilation around and
under the projector. Leave at least 8 inches between the
projector and a wall.
❏ Make sure the projector is within 6 feet of an electrical outlet
or extension cord and within 5 feet of your computer and/or
video source.
❏ Place the projector directly in front of the center of the
screen, facing the screen squarely. Otherwise, your image
will not be rectangular.
Note:
It's easier to position the projector when the screen is directly in
front of the room. If the screen is placed diagonally in a corner, it's
much more difficult to aim the projector correctly at the screen and
get a rectangular image.
Use the figure below as a guideline to help you determine how
far from the screen to place the projector. Image size generally
increases with distance, but may vary depending on how you
position the zoom ring and whether you have adjusted the
image size with other settings.
29.8 to 48.3 feet
5.8 to 9.5 feet 2.8 to 4.7 feet
To calculate measurements, use the following formulas:
❏ To find the projection distance when you know the screen's
diagonal dimension:
Wide (inches) = ((Diagonal screen size [inches]
2.3937) / 2.54
Tele (inches) = ((Diagonal screen size [inches]
2.06831) / 2.54
❏ To find how large a screen's diagonal dimension will be
when you know the projection distance:
Wide (inches) = (Projection distance [inches]
2.54) + 1.6767
Tele (inches) = (Projection distance [inches]
+ 1.077
If you place the projector below the level of the screen, you'll
have to tilt it up by extending the front adjustable foot, as
shown. Tilting the projector upward causes the image to lose its
rectangular shape, but the Auto Keystone feature corrects the
distortion automatically. If the image does not regain its
rectangular shape, the Auto Keystone feature may have been
disabled. To turn it on, see page 6.
If you place the projector level with the bottom of the screen,
the image will be rectangular and you won't have to adjust it. If
you place the projector higher than the bottom of the screen,
the image will still be rectangular, but you won't be able to fill
the whole screen with the image.

Starting Up the Projector

Make sure your projector and other equipment are connected
correctly. Then turn on your projector, as described below.
If you turn on your computer or video equipment before
starting the projector, the projector automatically detects and
displays the image source. If you turn on the projector first or
have multiple pieces of equipment connected, you may have to
select the source manually. See page 5.
1. Remove the lens cap.
×
2.97334) –
×
3.61474) –
Caution:
Do not use the projector with the lens cap in place. The heat
generated by the lamp can damage the cap.
2. Connect one end of the power cord to the projector's power
×
×
0.32827
inlet. Then connect the other end to an electrical outlet.
×
×
0.203
2.54)
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Epson PowerLite 821p Projector
Epson PowerLite 821p Projector
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