Service manual

4-14
19. TIMING SHEET
Preset Mode No.
1 2 3 4 5 6
VGA VGA VESA VESA VESA (MAC)
Signal Name
640*400 640*480 640*480 640*480 800*600 832*624
(75) (85) (75) (75)
Resolution
640*400 640*480 640*480 640*480 800*600 832*624
Dot Clock
(
MHz
25.175 25.175 31.500 36.000 49.500 57.283
fh (kHz)
31.47 31.469 37.50 43.269 46.875 49.725
fv (Hz)
70.09 59.940 75.00 85.008 75.00 74.550
Total
(
dot
)
800 800 840 832 1056 1152
(uS)
31.78 31.778 26.667 23.111 21.333 20.111
Disp (dot)
640 640 640 640 800 832
(uS)
25.42 25.422 20.317 17.778 16.162 14.523
Front (dot)
(uS)
16
0.64
16
0.636
16
0.508
56
1.556
16
0.323
32
0.559
Sync Pulse (dot)
96 96 64 56 80 64
(uS)
3.18 3.813 2.032 1.556 1.616 1.117
Back (dot)
48 48 120 80 160 224
(uS)
1.91 1.907 3.810 2.222 3.232 3.910
Total
(
H
)
449 525 500 509 625 667
(mS)
14.268 16.683 13.333 11.764 13.333 13.414
Disp (H)
400 480 480 480 600 624
(mS)
12.711 15.253 12.800 11.093 12.800 12.549
Front (H)
12 10 1 1 1 1
(mS)
0.381 0.318 0.027 0.023 0.021 0.020
Sync Pulse (H)
2 2 3 3 3 3
(mS)
0.064 0.064 0.080 0.069 0.064 0.060
Back (H)
35 33 16 25 21 39
(mS)
1.112 1.049 0.427 0.578 0.448 0.784
Interlace
NON NON NON NON NON NON
Polarity (H/V)
NEG/POS NEG/NEG NEG/NEG NEG/NEG POS/POS NEG/NEG
Composite Sync
Composite Video
Character Font
7*9 7*9 7*9 7*9 7*9 7*9
Serration
OFF OFF OFF OFF OFF OFF
EQP
OFF OFF OFF OFF OFF OFF