Product Specifications
Page 7
MD 1998LE (B1997PNST)
2-3 Timing Chart
This section describes the timings that the computer industry recognizes as standard for computer-generated
video signals.
Table 2-2. Timing Chart
S ep e ra te S y n c
H o rizo n tal
V id e o
C
D
E
S y n c
A
B
F
Vertic al
V id e o
I
J
S y n c
G
H
L
K
H.Parameters:
A: Period
B: Blanking Time
C: Sync Width
D: Back Porch
E: Active Time
F: Front Porch
V.Parameters:
G: Period
H: Blanking Time
I: Sync Width
J: Back Porch
K: Active Time
L: Front Porch
Mo de
1
2
3
4
5
6
7
8
9
10
11
12
13
H. Do t s
640
720
640
800
1152
800
1024
1024
1280
1280
1024
1600
1280
V. Do t s
480
400
480
600
864
600
768
768
1024
1024
768
1200
960
H- f re q ( k Hz )
31.47
37.93
43.27
46.8
67.5
53.67
60.03
68.67
80
91.146
80
93.75
85.938
Sy nc
Po la rit y
-
-
-
+
+
+
+
+
+
+
+
+
+
A pe rio d us
31.78
26.366
23.11
21.33
14.815
18.631
16.66
14.561
12.504
10.971
12.376
10.667
11.636
B Blking us
6.356
6.085
5.33
5.172
4.148
4.409
3.657
3.725
3.022
2.844
3.624
2.765
3.017
C Sy nc us
3.81
2.028
1.556
1.616
1.185
1.138
1.219
1.016
1.067
1.016
1.231
0.948
1.077
D B. P. us
1.907
3.042
2.22
3.232
2.37
2.702
2.235
2.201
1.837
1.422
2.12
1.501
1.508
E Act iv e us
25.42
20.282
17.78
16.16
10.667
14.222
13
10.836
9.481
8.127
8.752
7.901
8.62
F F. P. us
0.636
1.014
1.556
0.323
0.593
0.569
0.203
0.508
0.119
0.406
0.273
0.316
0.431
V- f re q ( Hz )
59.94
85.04
85
75
75
85
75.03
84.99
75
85
100
75
85
Sy nc
Po la rit y
-
+
-
+
+
+
+
+
+
+
+
+
+
O P e rio d ms
16.68
11.759
11.76
13.33
13.333
11.756
13.33
11.765
13.329
11.761
9.988
13.333
11.764
P Blk ing ms
1.43
1.213
0.67
0.533
0.533
0.578
0.533
0.582
0.525
0.527
0.483
0.533
0.593
Q S y nc ms
0.064
0.079
0.069
0.064
0.044
0.056
0.05
0.044
0.038
0.033
0.074
0.032
0.035
R B. P. us
1.02
1.107
0.578
0.448
0.474
0.503
0.466
0.524
0.475
0.483
0.397
0.491
0.547
S Ac t iv e us
15.25
10.546
11.09
12.8
12.8
11.179
12.8
11.183
12.804
11.235
9.505
12.8
11.171
T F. P. us
0.35
0.026
0.023
0.021
0.015
0.019
0.017
0.015
0.013
0.011
0.013
0.011
0.012
