Spectec SDV-841/842 - Manual (Page 9)

"(Current Configuration}" configuration will restore all virtual display
property values to those currently in use.
4. Set the various properties for the virtual display. Within the
Configuration Tab are five more tabs which organize the properties. The
following list describe each of the five tabs and the properties within.
Orientation
Sets the orientation of the display.
Width
1
Sets the width of the virtual display. Choose from the pick list or enter your own
custom value.
Height
1
Sets the height of the virtual display. Choose from the pick list or enter your
own custom value.
Zoom
Sets the magnification level of the display. Choose from the pick list or enter
your own custom value. Choose "Fit Display" to cause the virtual display to be
compressed or stretched to fit exactly within the physical display.
DPI
Sets the dot-per-inch (also known as logical pixels per inch). The operating
system uses DPI to calculate the sizes of various display elements with
higher values resulting in smaller elements allowing for more information to
be displayed. Most devices only support one DPI in which case this property
setting will be disabled. The DPI selection may require installation of a DPI
Resource Pack which are available through the Nyditot Web Site .
Darken
Sets the amount of darkening applied to black and white areas. During pixel
averaging necessary for compression/magnification, black text can become
fuzzy or grayed. This setting may improve text legibility.
Physical Mode
Sets the physical mode of the display. For best results, choose the physical
mode that is closest to the virtual width and height. Most devices only
support one physical mode in which case this property setting will be
disabled.