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T T
E E
C C
H H
N N
I I
T T
E E
C C
H H
N N
I I
Initial set signals
Back porch b
Display interval c
Sync a
Computer /
Horizontal signal timing (µs)
Signal
a
2.0
3.8
Mac 13"mode
2.1
1.3
2.0
1.6
2.0
3.2
2.4
1.6
1.1
1.1
2.1
XGA (70Hz)
1.8
XGA (75Hz)
1.2
XGA (85Hz)
1.0
1152×864 (75Hz)
1.2
1280×960 (60Hz)
1.0
1280×1024 (60Hz)
1.0
1280×1024 (75Hz)
1.1
1600×1200 (60Hz)
1.2
C C
A A
L L
( (
c c
o o
n n
C C
A A
L L
( (
c c
o o
n n
Front porch d
b
c
3.0
20.3
1.0
1.9
25.4
0.6
3.2
21.2
2.1
3.8
20.3
1.0
3.8
20.3
0.5
2.2
17.8
1.6
3.6
22.2
0.7
2.2
20.0
1.0
1.3
16.0
1.1
3.2
16.2
0.3
2.7
14.2
0.6
3.9
14.5
0.6
2.5
15.8
0.4
1.9
13.7
0.3
2.2
13.0
0.2
2.2
10.8
0.5
2.4
10.7
0.6
2.9
11.9
0.9
2.3
11.9
0.4
1.8
9.5
0.1
1.9
9.9
0.4
t t
i i
n n
u u
e e
d d
) )
t t
i i
n n
u u
e e
d d
) )
Back porch b
Sync a
Computer /
Signal
d
TEXT
VGA (60Hz)
VGA (75Hz)
VGA (85Hz)
SVGA (56Hz)
SVGA (60Hz)
SVGA (72Hz)
SVGA (75Hz)
SVGA (85Hz)
XGA (60Hz)
XGA (70Hz)
XGA (75Hz)
XGA (85Hz)
1152×864 (75Hz)
1280×960 (60Hz)
1280×1024 (60Hz)
1280×1024 (75Hz)
1600×1200 (60Hz)
Front porch d
Display interval c
Vertical signal timimg (lines)
a
b
c
3
42
400
2
33
480
3
39
480
3
28
480
3
16
480
3
25
480
2
22
600
4
23
600
6
23
600
3
21
600
3
27
600
3
39
624
6
29
768
6
29
768
3
28
768
3
36
768
3
32
864
3
36
960
3
38
1024
3
38
1024
3
46
1200
TECHNICAL - 3
d
1
10
3
9
1
1
1
1
37
1
1
1
3
3
1
1
1
1
1
1
1
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