Timing Chart - Samsung SyncMaster 570PTFT Service Manual

2-3 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard
for computer-generated video signals.
Mode
VGA1/
70 Hz
640 x 350
Timing
fH (kHz) 31.469
A µsec 31.778
B µsec 3.813
C µsec 1.589
D µsec
26.058
E µsec 0.318
fV (Hz) 70.086
O msec 14.268
P msec 0.064
Q msec
1.716
R msec 11.504
S msec 0.985
Clock
Frequency 25.175
(MHz)
Polarity
H.Sync Positive
V.Sync Negative
Remark Separate
Separate Sync
Horizontal
Video
Video
C D
C D E
Sync Sync Sync
B
B
A
A
A : Line time total
C : Back porch
E : Front porch
SyncMaster 570PTFT / 570P Plus TFT
IBM
VGA2/ VGA3/
640/72 Hz
70 Hz 60 Hz
640 x 480
720 x 400 640 x 480
31.469 31.469 37.861
31.777 31.778 26.413
3.813 3.813 1.270
1.589 1.589 3.810
26.058 26.058 20.825
0.318 0.318 0.508
70.087 59.940 72.809
14.268 16.683 13.735
0.064 0.064 0.079
0.858 0.794 0.528
13.155 15.761 13.100
0.191 0.064 0.026
28.322 25.175 31.500
Negative Negative Negative
Positive Negative Negative
Separate Separate Separate
Vertical
Video
Video
E Q R
Q R
Sync Sync
Sync
P P P
O O
O
B : Horizontal sync width
D : Active time
Table 2-1. Timing Chart
640/75 Hz 800/56 Hz
640/85 Hz
640 x 480 800 x 600
640 x 480
37.500 35.156
43.269
26.667 28.444
23.111
2.032 2.000
1.556
3.810 3.556
2.222
20.317 22.222
17.778
0.508 0.667
1.556
75.000 56.250
85.008
13.333 17.778
11.764
0.080 0.057
0.671
0.427 0.626
0.578
12.800 17.067
11.093
0.027 0.028
0.023
31.500 36.000
49.500
Negative Positive
Negative
Negative Negative
Negative
Separate Separate
Separate
A
Horizontal
B
S
S
Green
Horizontal
B
O : Frame time total
Q : Back porch
S : Front porch
VESA
800/75 Hz
800/60 Hz 800/72 Hz
800 x 600 800 x 600 800 x 600
37.879 48.077 46.875
26.400 20.800 21.333
3.200 2.400 1.616
2.200 1.280 3.232
20.000 16.000 16.162
1.000 1.120 0.323
60.317 72.188 75.000
16.579 13.853 13.333
0.106 0.125 0.064
0.607 0.478 0.448
15.840 12.480 12.800
0.026 0.770 0.021
40.000 50.000 49.500
Positive
Positive Positive
Positive Positive Positive
Separate Separate Separate
H/V Composite Sync
VIDEO
Q
Vertical
P
O
Sync-on-Green
Vertical
P
Q
O
P : Vertical sync width
R : Active time
2 Product Specifications
1024/60 Hz
800/85 Hz
800 x 600
1024 x 768
53.674 48.363
18.631 20.677
1.138 2.092
2.462
2.702
14.222 15.754
0.569 0.369
85.061 60.004
11.756 16.666
0.124
0.056
0.503 0.600
11.179 15.880
0.019 0.062
56.250 65.000
Positive Negative
Positive Negative
Separate Separate
S
R
R
S
2-3