ViewSonic VG910S - 19" LCD Monitor Service Manual page 13

Signal name Symbol
H-frequency (kHz)
V-frequency (Hz)
Pixel rate (MHz)
H-sync
H-back porch
Count num
(H-total)
H- front porch
V-sync
V-back porch
Count num
(V-total)
V-front porch
H-sync. Polarity
V-sync Polarity
H-resolution (dots)
V-resolution (lines)
Notes: Because this model no support FRC and in order to meet the panel spec of vertical frequency,
some timing can not full screen in vertical size.
Ex:640x400/70Hz;640x350/70Hz ;720x400/70Hz ;640x480/85Hz;800x600/85Hz;
1024x768/85Hz.
ViewSonic Corporation
15 16
XGA XGA
56.476 58.099
70.069 72.082
75.000 78.084
Ths 136 136
Thb 144 160
Thd 1328 1344
Thf 24 24
Tvs 6
Tvb 29 29
Tvd 806 806
Tvf 3
Negative Negative
Negative Negative
1024 1024
768 768
17 18
XGA XGA
60.023 68.677
75.029 84.997
78.750 94.500
96 96
176 208
1312 1376
16 48
6 3 3
28 36
800 808
3 1 1
Positive Positive
Positive Positive
1024 1024
768 768
10
19 20
SXGA 720P
63.981 45.000
60.02 60.00
108 74.250
112 40
248 270
1688 1658
48 60
3 5
38 20
1066 750
1 5
Positive Negative
Positive Negative
1280 1280
1024 720
Confidential - Do Not Copy
21
SXGA
79.976
75.025
135
144
248
1688
16
3
38
1066
1
Positive
Positive
1280
1024
VG910s/b