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2.3
Preset Timing
Table 3
MODE
H Pixes
V Lines
1
VGA60
640
480
2
VESA75
800
600
3
VESA60
1024
768
4
VESA85
800
600
2.4
Brightness and Contrast
Definitions:
Active area
This zone can be lighted when the background color is changed from
black to any other color. Its dimensions, in terms of timing
the "active area "times described in table 3
Raster area
Under certain conditions (see table 4) this zone must be visible when no video input is
applied. Width and height of the raster area
dimensions of the active area.
Border
Comprising any area of the screen outside the raster area.
Brightness
This control is mainly intended as a raster luminance adjustment.
Contrast
This control shall vary the gain of the video amplifier, thus adjusting the contrast
of the displayed images, and shall not have any visible effect on the raster luminance.
Both controls shall not affect the border. Inside this zone the raster shall be always under the minimum
perceptible level and no evidence of retracing(images or distortion)shall be visible on the screen at any
M454 U-P Default Timing
sweep
Fd(MHz)
Fh(KHz)
Polar(H/V)
Fv(Hz)
d: dot
25.175
31.469
N/N
59.94
49.5
46.875
P/P
75
65
48.363
N/N
60
56.25
53.674
P/P
85.061
F
D
Th(us)
Td(us)
Tv(ms)
Td(ms)
d: display b: backporch p: pulse
31.777
25.422
16.683
15.253
21.333
16.162
13.333
12.8
20.677
15.754
16.667
15.88
18.631
14.222
11.756
11.179
must be larger than the corresponding
4
C
B
Tb(us)
Tp(us)
Tb(ms)
Tp(ms)
1.907
3.813
1.049
0.064
3.232
1.616
0.448
0.064
2.462
2.092
0.6
0.124
2.702
1.138
0.503
0.056
correspond to
A
Tf(us)
Tf(ms)
f: front
0.635
0.317
0.323
0.021
0.369
0.063
0.569
0.018
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