NVIDIA Corporation
146
Chapter 7
Configuring Key ForceWare Graphics Driver Features
•
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
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.
•
861B
refers
to
an
EIA/CEA
standard
and
would
apply
to
certain
861
High
Definition
television
(HDTV)
displays.
•
‐
P
means
“progressive
scanning,”
which
is
a
method
of
sending
an
image
to
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
Refresh rate
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.
Active pixels
Indicates the number of all visible pixels in one vertical line.
Interlaced
mode
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
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.
Table 7.1
Advanced Timing Parameters
(continued)
Advanced
Timing
Parameter
Description
QuadroGuide_.book Page 146 Thursday, July 27, 2006 6:48 PM
