Product Specifications
Page 7
CPQ-C1786FNSL/T (FS7550/V7550)
2-3 Timing Chart
This section describes the timings that the computer industry recognizes as standard for computer-generated
video signals.
Table 2-3. Timing Chart
Seperate Sync
Horizontal
Video
C
D
E
Sync
A
B
F
Vertical
Video
I
J
Sync
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
M ode
1
2
3
4
5
6
7
8
9
10
H. Dots
640
640
640
720
800
800
1024
1024
1600
1280
V. Dots
480
480
480
400
600
600
768
768
1200
1024
H-fre q (kHz)
31.469
37.5
43.269 31.467 46.875 53.674 60.023 68.667
81.25
79.976
Sync Polarity
-
-
-
-
+
+
+
+
+
+
A pe riod us
31.778 26.667 23.111 31.778 21.333 18.631
16.66
14.561 12.308 12.504
B Blanking us
6.356
6.35
5.33
6.356
5.172
4.409
3.657
3.725
3.191
3.023
C Sync us
3.813
2.032
1.556
3.813
1.616
1.138
1.219
1.016
1.094
1.067
D B.P. us
1.907
3.81
2.222
1.907
3.232
2.702
2.235
2.201
1.732
1.837
E Active us
25.422 20.317 17.778 25.422 16.162 14.222 13.003 10.836
9.117
9.481
F F.P. us
0.636
0.508
1.556
0.636
0.323
0.569
0.203
0.508
0.365
0.119
V-fre q (Hz)
59.94
75
85.008 70.082
75
85.061 75.029 84.997
65
75.025
Sync Polarity
-
-
-
+
+
+
+
+
+
+
G Pe riod ms
16.683 13.333 11.764 14.268 13.333 11.756 13.328 11.765 15.385 13.329
H Blanking ms
1.43
0.533
0.67
1.557
0.533
0.578
0.533
0.582
0.615
0.526
I Sync ms
0.064
0.08
0.069
0.064
0.064
0.056
0.05
0.044
0.037
0.038
J B.P. us
1.048
0.427
0.578
1.111
0.448
0.503
0.466
0.524
0.566
0.475
K Active us
15.253
12.8
11.093 12.711
12.8
11.179 12.795 11.183 14.769 12.804
L F.P. us
0.318
0.026
0.023
0.382
0.021
0.019
0.017
0.015
0.012
0.013
