Filter
Top Products
ViewSonic 9 PJ513D/PJ513DB
and the vertical offset height of the projector from the horizontal edge of the screen
(offset).
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 Diagonal". 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
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
4667 mm and with a vertical offset of 183 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.
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". 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
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 4.5 m (4500 mm), the closest
match in the Average column is 4593 mm. Looking across this row shows that a 3000
mm (3 m) screen is required. If you can only obtain imperial sized screens, the listed
screen sizes on either side of the 3 m screen are the 9' and 10' screens.
Checking the min and max projection distance values for these screen sizes, indicates
that the 4.5 m measured projection distance will need to be reduced to fit the 9' size
screen, or increased to fit the 10' size screen. The projector can be adjusted (using the
zoom control) to display on these different screen sizes at those projection distances.
Be aware that these different screens have different vertical offset values.