Timing Chart - Samsung 510N Service Manual

2 Product Specifications

2-4 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard for
computer-generated video signals.
IBM
Mode
VGA2/
70 Hz
Timing
720 x 400 640 x 480
fH (kHz) 31.469 31.469
A µsec 31.777 31.778
B µsec 3.813
C µsec 1.589
D µsec 26.058 26.058
E µsec 0.318
fV (Hz) 70.087 59.940
O msec 14.268 16.683
P msec 0.064
Q msec 0.858
R msec 13.155 15.761
S msec 0.191
Clock
Freq. 28.322 26.175
(MHz)
Polarity
H.Sync Negative Negative
V.Sync Positive Negative
Remark Separate Separate
Separate Sync
Video
C D E
Sync
B
A
A : Line time total
C : Back porch
E : Front porch
2-4
Table 2-1 Timing Chart
(MJ15AS*/MJ15BS*/MJ17AS*/MJ17BS*/MJ19AS*/MJ19BS*/MJ19ES*/MJ19US*/MJ19QS*)
VGA3/
640/75 Hz 800/60 Hz
60 Hz
640x480 800x600
37.500 37.879
26.667 26.400
3.813 2.032 3.200
1.589 3.810 2.200
20.317 20.000
0.318 0.508 0.000
75.000 60.317
13.333 16.579
0.064 0.080 0.106
0.794 0.427 0.607
12.800 15.840
0.064 0.027 0.0261
31.500 40.000
Negative Positive
Negative Positive
Separate Separate
Video
Q R S
Sync
P
O
B : Horizontal sync width
D : Active time
VESA
800/75 Hz 1024/60 Hz 1024/75 Hz
800x600 1024x768 1024x768
46.875 48.363 60.023
21.333 20.677 16.660
1.616 2.092 1.219
3.232 2.462 2.235
16.162 15.754 13.003
0.323 0.369 0.203
75.000 60.004 75.029
13.333 16.666 13.328
0.064 0.124 0.050
0.448 0.600 0.466
12.800 15.880 12.795
0.021 0.062 0.017
49.500 75.000 78.750
Positive Negative Positive
Positive Negative Positive
Separate Separate Separate
H/V Composite Sync
Sync-on-Green
O : Frame time total
Q : Back porch
S : Front porch
VESA(MJ17AS*/MJ17BS*/
MJ19AS*/MJ19BS*/MJ19ES*/MJ19US*/MJ19QS*)
1280/60 Hz 1280/75 Hz
1280x1024 1280x1024
63.981 79.975
11.852 12.504
1.037 1.067
2.296 1.837
9.259 9.481
0.000 0.119
60.020 75.025
16.005 13.329
0.047 0.038
0.594 0.475
15.630 12.804
0.016 0.013
108.000 135.000
Positive Positive
Positive Positive
Separate Separate
P : Vertical sync width
R : Active time