Samsung LB15VS Service Manual page 8

2-4-2 LB17LS/LB17KS/LB17LT/LB17KT
Table 2-2 Timing Chart
Mode
640/75 Hz
640 x 480
Timing
fH (kHz) 37.500
A µsec 26.667
B µsec 2.032
C µsec 3.810
D µsec 20.317
E µsec 0.508
fV (Hz) 75.000
O msec 13.333
P msec 0.080
Q msec 0.427
R msec 12.800
S msec 0.027
Clock
Frequency 31.500
(MHz)
Polarity
H.Sync Negative
V.Sync Negative
Remark Separate
Separate Sync
Video
C D E
Sync
B
A
A : Line time total
C : Back porch
E : Front porch
LB15VS/LB17LS/LB17KS/
LB17LT/LB17KT
VESA
800/85 Hz 1024/85 Hz
800 x 600 1024 x 768
53.674
68.677
18.631
14.561
1.138
1.016
2.702
2.201
14.222
10.836
0.569
0.508
85.061
84.997
11.756
11.765
0.056
0.044
0.503
0.524
11.179
11.183
0.019
0.015
56.250
94.500
Positive
Positive
Positive
Positive
Separate
Separate
Video
Q R S
Sync
P
O
B : Horizontal sync width
D : Active time
O : Frame time total
Q : Back porch
S : Front porch
2 Product Specifications
P : Vertical sync width
R : Active time
2-5