Acer X221W Technical Information download pdf (Page 11)

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Timings

The product has 34 memory modes in total. 26 modes are preset and 8 modes are user definable.

MODE NO. 1 2 3 4

RESOLUTION 720 x 400 640 x 480 640x480 640 x 480

Dot clock(MHz) 28.321 25.175 30.24 31.5

f h 31.469kHz 31.469kHz 35.0kHz 37.861kHz

H-Total ( us ) 31.78(900dots) 31.778 (800 dots) 28.571(864 dots) 26.413 (832 dots)

H-Sync ( us ) 3.813(108dots) 3.813 (96 dots) 2.116 (64 dots) 1.270(40 dots)

H-B-P ( us ) 1.907(54dots) 1.907 (48 dots) 3.175 (96 dots) 4.064(128 dots)

H-Active ( us ) 25.42(720dots) 25.422 (640 dots) 21.164 (640 dots) 20.317(640 dots)

H-F-P ( us ) 0.636(18dots) 0.636 (16 dots) 2.116 (64 dots) 0.762(24 dots)

f v 70Hz(70.087) 60Hz (59.940) 66.7 HZ (66.667) 72.809Hz

V-Total (ms ) 14.27(449 lines) 16.683 (525 lines ) 15.000 (525 lines ) 13.735(520 lines)

V-Sync ( ms ) 0.064(2 lines) 0.064 (2 lines ) 0.086 (3 lines ) 0.079(3 lines)

V-B-P (ms ) 1.112(35 lines) 1.049 (33 lines ) 1.114 (39 lines ) 0.739(28 lines)

V-Active ( ms ) 12.71(400 lines) 15.253 (480 lines ) 13.714 (480 lines ) 12.678(480 lines)

V-F-P ( ms ) 0.384(12 lines) 0.317 ( 10 lines) 0.086 (3 lines ) 0.237(9 lines)

SYNC. H/V -/+ - / - +/+ -/-

POLARITY Or -/-

SEP . SYNC Y Y Y Y

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 61 62

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Acer X221W Technical Information Page 11