Acer AL2023, Service Manual, Page: 17 / 61

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MODE NO. 25 26
RESOLUTION
1680 x 1050 848 x 480
f h
65.29 KHz 31.02 KHz
H-Total ( us ) 15.316 (2240 dots) 32.237 (1088 dots)
H-Sync ( us ) 1.203 ( 176 dots) 3.319 (112 dots)
H-B-P ( us ) 1.915 (280 dots) 3.319 (112 dots)
H-Active ( us ) 11.487 (1680 dots) 25.126 (848 dots)
H-F-P ( us ) 0.711 (104 dots) 0.474 (16 dots)
f v 59.954 Hz 60 Hz
V-Total (ms ) 16.679 (1089 lines) 16.667 (517 lines )
V-Sync ( ms ) 0.092 (6 lines) 0.258 (8 lines )
V-B-P (ms ) 0.459 (30 lines) 0.741 (23 lines )
V-Active ( ms ) 16.082 (1050 lines) 15.474 (480 lines )
V-F-P ( ms ) 0.046 ( 3 line ) 0.193 (6 lines )
SYNC. H/V -/+ + / +
POLARITY
SEP . SYNC Y Y
A
: H-Total O : V-Total
B : H- Sync width P : V- Sync width
C : H- Back porch Q :.V- Back porch
D : H- Video width R : V- Video width
E : H- Front porch S :.V- Front porch
146.25 33.75
Dot clock(MHz)