Samsung CF21M, Service Manual

Page: 74 / 76

2 Product Specifications
2-2 CF21M*
Q R S
P
O
Video
Sync
Sync
Horizontal
Vertical
C D E
P
O
B
A
Video
Sync
Sync
Separate Sync
A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width
C : Back porch D : Active time Q : Back porch R : Active time
E : Front porch S : Front porch
B
Green
Vertical
P
Q R S
O
Horizontal
Sync-on-Green
800/85 Hz
800 x 600
1280/85 Hz
1280 x 1024
640/85 Hz
640 x 480
VGA3/60Hz
640 x 480
VGA2/70Hz
720 x 400
Table 2-1. Timing Chart
fH (kHz)
A µsec
B µsec
C µsec
D µsec
E µsec
fV (Hz)
O msec
P msec
Q msec
R msec
S msec
Clock
Freq.
(MHz)
Polarity
H.Sync
V.Sync
Remark
31.469
31.778
3.813
1.907
25.422
0.636
70.087
14.268
0.064
1.080
12.711
0.413
28.322
Negative
Positive
Separate
31.469
31.778
3.813
1.907
25.422
0.636
59.940
16.683
0.064
1.048
15.253
0.318
25.175
Negative
Negative
Separate
43.269
23.111
1.556
3.810
5.222
17.778
85.008
13.333
0.080
0.427
12.800
0.027
36.000
Negative
Negative
Separate
53.674
18.631
1.138
2.702
14.222
0.569
85.061
11.756
0.056
0.503
11.179
0.019
56.250
Positive
Positive
Separate
91.146
10.971
0.016
1.422
8.127
0.406
85.024
11.761
0.033
0.483
11.235
0.011
157.500
Positive
Positive
Separate
Mode
IBM VESA
Timing
106.250
9.412
0.837
1.325
6.972
0.279
85.000
11.765
0.028
0.433
11.294
0.009
229.500
Positive
Positive
Separate
79.976
12.504
1.067
1.837
9.481
0.119
75.025
13.329
0.038
0.475
12.804
0.013
135.000
Positive
Positive
Separate
68.677
14.561
1.016
2.201
10.836
0.508
84.997
11.765
0.044
0.524
11.183
0.015
94.500
Positive
Positive
Separate
1600/85 Hz
1600 x 1200
1024/85 Hz
1024 x 768
1280/75 Hz
1280 x 1024