NVIDIA FX1300 User Guide - Page 158

Chapter 7 Configuring Key ForceWare Graphics Driver Features screen. On the first pass, every other line is painted and on the second pass, the rest of the lines are painted. Unlike the "progressive scanning" method, where all the scan lines are updated in each frame, interlaced scanning results in a higher frame rate but usually causes image flicker. Display Timing Standards Note: If you want to use "standard" timings (such as DMT, GTF, CVT, and EDID) instead of "custom" or EIA‐861B timing parameters from the Mode & timing list discussed in the previous section "Display Mode & Timing Parameters" on page 144, follow these steps: 1 Click the Timing standard list and select one of the display timing standards described in Table 7.2. 2 Click Apply. Table 7.2 Display Timing Standards Display Timing Standard Description General Timing Formula (GTF) Discrete Monitor Timings (DMT) Coordinated Video Timings (CVT) Coordinated Video Timings-Reduced Blanking (CVT-RB) EDID Timing GTF is an older but widely used timing standard. However, newer display are switching to the CVT standard. DMT is a set of pre-defined VESA timings. VESA updates this standard every year. If DMT timing is available for a specific mode, the NVIDIA display driver normally selects it instead of GTF. CVT became the VESA standard on March 2003. CVT supports higher resolutions better than other timing standards. CVT-RB improves on the CVT standard. CVT-RB offers reduced horizontal and vertical blanking periods and allows a lower pixel clock rate and higher frame rates. EDID timing is the preferred timing standard defined by the display's EDID value. EDID is a standard data structure that defines the display's model number, timing, and other settings. Note: Manufacturer-defined EDIDs are available only on Plug-and-Play (PnP)compatible displays. 147 Quadro Workstation User's Guide