ATI 9800XT User Guide - Page 14

Ratiometric Expansion, Apply, Primary

Page 14 highlights

10 2 Click OK or Apply to save the changes. Ratiometric Expansion Your RADEON 9800XT offers ratiometric expansion (or digital panel scaling as it is commonly known). This expands a low resolution image to fill a higher resolution panel. However, ratiometric expansion is only available on the Primary display. Therefore, if a flat panel display (FPD) is set as Secondary, the Extended Desktop mode is disabled and the resolution is less than the FPD's native resolution. This causes the FPD to default to center mode.

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10
2
Click
OK
or
Apply
to save the changes.
Ratiometric Expansion
Your RADEON 9800XT offers ratiometric expansion
(or digital panel scaling as it is commonly known). This
expands a low resolution image to fill a higher resolution
panel. However, ratiometric expansion is only available
on the
Primary
display. Therefore, if a flat panel display
(FPD) is set as Secondary, the Extended Desktop mode
is disabled and the resolution is less than the FPD’s
native resolution. This causes the FPD to default to
center mode.