OPERATION
VistaPro 2000 User's Manual
3-18
Dynamic Scaling is yet another option in the Resizing Factor pull-down list.
Selecting this option generates a separate submenu of controls as described
below.
When to Use Dynamic Scaling
Like the numeric resizing ratios, dynamic scaling allows you to increase or
decrease the size of your image. With dynamic scaling, however, you can also
control the horizontal and vertical sizes independently and move the image to a
specific area of the screen. Use dynamic scaling in order to match your image
precisely to the specific screen size and aspect ratio (proportion) present in your
application.
Note that only sources recognized as “non-video” can be adjusted through
dynamic scaling, such as graphics RGB signals and line-doubled (or better)
video signals. While images from NTSC, PAL, or SECAM signals can be
adjusted through dynamic scaling if the signal first runs through a separate line-
doubler (or better) before reaching the projector, the frequencies of these signals
in their initial state (NTSC = 15.73 kHz / 59.94 Hz, and PAL/SECAM = 15.62
kHz / 50.00 Hz) will be recognized by the projector as video only—dynamic
scaling will not be possible until their frequencies are changed to non-video
through line doubling.
How to Access & Adjust Dynamic Scaling
The three sets of horizontal/vertical
dynamic scaling controls reside in
their own submenu called Dynamic
Scaling (see right). Access this
submenu through the “
Resizing
Factor
” pull-down list in the Size &
Position menu—select the
“
Dynamic
” option.
Note that the
shortcut to
the “
Resizing Factor
” pull-down list
does not permit access to this menu
but instead applies whatever
dynamic scaling values have
previously been set for the current
source (which will be defaults for
the current source, if never set).
Each control in the dynamic scaling menu is described below, followed by a
typical step-by-step dynamic scaling procedure. For all adjustments, use the
or
keys to increase or decrease. Press
to accept the changes and return
to the Dynamic Scaling submenu (or
to return to presentation level).
Dynamic Scaling
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