HP Compaq W220q User Manual download pdf (Page 23)

Plug and Play DDC2B Feature

This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the

monitor to inform the host system of its identity and, depending on the level of DDC used, communicate

additional information about its display capabilities.

The DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID information

over the DDC2B channel.

LCD Monitor Quality and Pixel Policy

The HP 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 the HP 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 response rate, from a distance of approximately 50 cm (16 in).

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 W220q Monitor, refer to the HP Web site at:

http://www.hp.com/support

Agency Regulatory Notices

Federal Communications Commission Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference

in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception, which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio or television technician for help.

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HP Compaq W220q User Manual Page 23