Service manual

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2:!
Count num
(H-total)
Thd 1024 1056 1040 1056 1048 1152 1344
H- front porch Thf 24 40 56 16 32 32 24
V-sync Tvs 2 4 6 3 3 3 6
V-back porch Tvb 22 23 23 21 27 39 29
Count num
(V-total)
Tvd 625 628 666 625 631 667 806
V-front porch Tvf 1 1 37 1 1 1 3
H-sync. Polarity Negative Positive Positive Positive Positive Negativ
e
Negativ
e
V-sync Polarity Negative Positive Positive Positive Positive Negativ
e
Negativ
e
H-resolution (dots) 800 800 800 800 800 832 1024
V-resolution (lines) 600 600 600 600 600 624 768
15 16 17 18 19 20 21
Signal name Symb
ol
XGA XGA XGA XGA SXGA 720P SXGA
H-frequency (kHz) 56.476 58.099 60.023 68.677 63.981 79.976 45.000
V-frequency (Hz) 70.069 72.082 75.029 84.997 60.02 75.025 60.00
Pixel rate (MHz) 75.000 78.084 78.750 94.500 108 135 74.250
H-sync Ths 136 136 96 96 112 40 144
H-back porch Thb 144 160 176 208 248 270 248
Count num
(H-total)
Thd 1328 1344 1312 1376 1688 1658 1688
H- front porch Thf 24 24 16 48 48 60 16
V-sync Tvs 6 6 3 3 3 5 3
V-back porch Tvb 29 29 28 36 38 20 38
Count num
(V-total)
Tvd 806 806 800 808 1066 750 1066
V-front porch Tvf 3 3 1 1 1 5 1
ViewSonic Corporation
Confidential – Do Not Copy VX700-3