Service manual

3.3.4 Signal Timing
3.3.4.1 User Timing Mode memory
always do auto image adjust after timing mode change
3.3.4.2 Timing mode Change
maximum time for mode Change with auto image adjust 7 sec.
3.3.4.3 Signal Timing Table
The factory test input video signal is defined as the following table:
Preset H.sync V.sync SYNC POL. Video Mode Description
No. Frequency Frequency H-
SYNC
V-
SYNC
MOD [1]
31.468 ̈́ 1.0KHz 70.0 ̈́1.0Hz
+ - 640X350(70) Text mode
MOD [2]
31.468 ̈́ 1.0KHz 70.0 ̈́1.0Hz
- + 720X400(70) Dos text
MOD [3]
31.468 ̈́ 1.0KHz 59.94 ̈́ 1.0Hz
- - 640X480(60) VESA STANDARD
MOD [4]
35.01 ̈́ 1.0KHz 66.67 ̈́1.0Hz
- - 640X480(66) MAC
MOD [5]
37.86 ̈́ 1.0KHz 72.81 ̈́1.0Hz
- - 640X480(72) VESA STANDARD
MOD [6]
37.5 ̈́ 1.0KHz 75.0 ̈́ 1.0Hz
- - 640X480(75) VESA STANDARD
MOD [7]
43.27 ̈́ 1.0KHz 85.0 ̈́ 1.0Hz
- - 640X480(85) VESA STANDARD
MOD [8]
35.16 ̈́ 1.0KHz 56.25 ̈́1.0Hz
+ + 800X600(56) VESA STANDARD
MOD [9]
37.88 ̈́ 1.0KHz 60.32 ̈́1.0Hz
+ + 800X600(60) VESA STANDARD
MOD [10]
48.077 ̈́ 1.0KHz 72.19 ̈́ 1.0Hz
+ + 800X600(72) VESA STANDARD
MOD [11]
46.875 ̈́ 1.0KHz 75.0 ̈́1.0Hz
+ + 800X600(75) VESA STANDARD
MOD [12]
53.67 ̈́ 1.0KHz 85.0 ̈́ 1.0Hz
+ + 800X600(85) VESA STANDARD
MOD [13]
49.72 ̈́ 1.0KHz 74.5 ̈́ 1.0Hz
- - 832X624(75) MAC
MOD [14]
48.363 ̈́ 1.0KHz 60.0 ̈́1.0Hz
- - 1024X768(60) VESA STANDARD
MOD [15]
58.01 ̈́ 1.0KHz 72.08 ̈́1.0Hz
- - 1024X768(72) VESA STANDARD
MOD [16]
60.023 ̈́ 1.0KHz 75.0 ̈́1.0Hz
+ + 1024X768(75) VESA STANDARD
MOD [17]
68.67 ̈́ 1.0KHz 85.0 ̈́ 1.0Hz
+ + 1024X768(85) VESA STANDARD
MOD [20]
63.981 ̈́ 1.0KHz 60.02 ̈́ 1.0Hz
+ + 1280X1024(60) VESA STANDARD
MOD [21]
79.976 ̈́ 1.0KHz 75.0 ̈́1.0Hz
+ + 1280X1024(75) VESA STANDARD
3.4 Luminance Control
Analog signal (6500K)
over 200 cd / m
2
(@ Cont / Bright max)
3.5. Synchronization
Horizontal: 30 to 82 kHz
Vertical: 50 to 85 Hz Non-interlaced
maximum 75Hz @ 1280 x 1024 mode
Recommended 60Hz @ 1280 x 1024 mode
ViewSonic Corporation
Confidential – Do Not Copy
VG800b
7