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Chapter 7
Configuring Key ForceWare Graphics Driver Features
Table 7.1
Advanced
Timing
Parameter
Refresh rate
Active pixels
Interlaced
mode
Pixel clock
• EIA‐861B timing parameters, such as 861B (1920 x 1080 @ 59.94) -I and
861B (1920 x 1080 @ 59.94) -P
Note: EIA (Electronic Industries Alliance) 861B timings refers to a CEA/EIA
•
861B refers to an EIA/CEA standard and would apply to certain 861 High
Definition television (HDTV) displays.
•
‐
means "progressive scanning," which is a method of sending an image to
P
your display where all the scan lines are updated in each frame ‐‐‐ in other
words, all of the scan lines are displayed sequentially. This method, used in
modern computer displays, generally reduces flicker in the displayed image
and results in smoother motion for videos.
•
-I means "interlaced scanning," which is another method of sending the image
to your display where even scan lines are drawn during the first field in a frame
and odd scan lines are drawn during the second field in the frame. Another way
to explain this method is that two passes are used to paint an image on the
screen. On the first pass, every other line is painted and on the second pass, the
rest of the lines are painted.
142
Advanced Timing Parameters
Description
Refresh rate indicates how many times per second the electron beam in the picture
tube is moved from top to bottom in the case of a CRT (analog display), or more
generally, the frequency at which the entire screen is refreshed. Specify the
frequency at which your entire screen is refreshed, or retraced, to prevent the image
from flickering.
Note: This frequency is limited by the display's maximum horizontal scan rate and
the current resolution, as higher resolution implies more scan lines.
Note: The value should not exceed the display's maximum vertical scanning
frequency.
Indicates the number of all visible pixels in one vertical line.
Interlaced mode refers to interlaced scanning, which is a method of sending the
image to your display where even scan lines are drawn during the first field in a
frame and odd scan lines are drawn during the second field in the frame.
Note: Also see the explanation for -I (interlaced scanning) on
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.
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.
Pixel clock indicates how many millions of pixels are output per second. In other
words, this is the frequency at which the display receives pixels from the graphics
card. The value typically lies within a range 10 to 360 MHz, or the DAC maximum
value.
standard that consists of display timing and formats that allow the graphics
card to connect to Consumer Digital Televisions over a DVI connection and
configure itself for the optimum settings of that display.
(continued)
page 142.
User's Guide
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Troubleshooting
