Rose Electronics UltraVista Plus - Manual (Page 14)

10 UltraVista Plus Installation and Operations Manual
The DVI-D Input dialog displays the resolution of the current mode for
reference and allows the timings of the EDID preferred mode to be edited.
The dialog supports standard timing formulae such as:

VESA CVT

CVT Reduced Blanking

SMPTE (for HD modes)

VESA GTF

Custom
Selecting Auto from the drop down list will typically default to the VESA CVT
algorithm, which best matches typical standard VESA output modes. CVT
Reduced Blanking is recommended to minimize dot clocks and maximize
DVI cable lengths.