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Positioning your projector16
English
How to determine the position of the projector for a
given screen size
1. Select your screen size.
2. Refer to the table and find the closest match to your screen size in the left columns
labelled "4:3 screen". Using this value, look across this row to the right to find the
corresponding average distance from screen value in the column labelled "Average".
This is the projection distance.
3. On that same row, look across to the right column and make note of the "Vertical
offset in mm" value. This will determine the final vertical offset placement of the
projector in relation to the edge of the screen.
4. The recommended position for the projector is aligned perpendicular to the horizontal
center of the screen, at the distance from the screen determined in step 2 above, and
offset by the value determined in step 3 above.
For example, if you are using a 120-inch screen, the average projection distance is 4987 mm
and with a vertical offset of 256 mm.
If you place the projector in a different position (to that recommended), you will have to tilt
it down or up to center the image on the screen. In these situations, some image distortion
will occur. Use the Keystone function to correct the distortion. See "Correcting keystone"
on page 32 for details.
How to determine the recommended screen size for a
given distance
This method can be used for situations where you have purchased this projector and would
like to know what screen size will fit in your room.
The maximum screen size is limited by the physical space available in your room.
1. Measure the distance between the projector and where you want to position the
screen. This is the projection distance.
2. Refer to the table and find the closest match to your measurement in the average
distance from screen column labelled "Average". If the min and max values are
available on the table, check that your measured distance is between the min and max
distances listed on either side of the average distance value.
3. Using this value, look across that row to the left to find the corresponding screen
diagonal listed in that row. That is the projected image size of the projector at that
projection distance.
4. On that same row, look across to the right column and make note of the "Vertical
offset in mm" value. This will determine the final placement of the screen in relation
to the horizontal plane of the projector.
For example, if your measured projection distance was 4.2 m (4200 mm), the closest match
in the "Average" column is 4155 mm. Looking across this row shows that a 100-inch screen
is required.