HP w2271d 21.5-inch Diagonal LED Monitor - Manual (Page 30)

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LCD Monitor Quality and Pixel Policy
Your LCD Monitor uses high-precision technology, manufactured according to high
standards, to help guarantee trouble-free performance. Nevertheless, the display may
have cosmetic imperfections that appear as small bright or dark spots. This is
common to all LCD displays used in products supplied by all vendors and is not
specific to your LCD Monitor. These imperfections are caused by one or more
defective pixels or subpixels.
A pixel consists of one red, one green, and one blue subpixel. A defective whole pixel
is always turned on (a bright spot on a dark background), or it is always off (a dark
spot on a bright background). The first is the more visible of the two. A defective
subpixel (dot defect) is less visible than a defective whole pixel, and is small and only
visible on a specific background.
To locate defective pixels, the monitor should be viewed under normal operating
conditions and in normal operating mode at a supported resolution and refresh rate,
from a distance of approximately 50 cm (16 inches). We expect that, over time, the
industry will continue to improve its ability to produce displays with fewer cosmetic
imperfections, and we will adjust guidelines as improvements are made. For more
information about your LCD Monitor, refer to the HP Web site at:
http://www.hp.com/support.
Item Preset Resolution Horizontal Frequency (kHz) Vertical Frequency (Hz)
1 640 x 480 31.47 59.94
2 720 x 400 31.47 70.09
3 800 x 600 37.88 60.32
4 1024 x 768 48.36 60.00
5 1280 x720 45.00 60.00
6 1280 x 1024 63.98 60.02
7 1440 x 900 55.94 59.89
8
1680 x 1050 65.29 60.00 9
10 1920 x 1080 67.5 60.00
60.00 60.00 1 600 x 900
Appendix B. Technical Specifications
Table B- 5 Factory Preset Video Input Modes, 9W2271d