Philips 170B2T user manual Device

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Glossary

A Universal Serial Bus device that provides additional connections to the Universal Serial Bus.

Hubs are a key element in the plug-and-play architecture of USB. The Figure shows a typical hub. Hubs serve to simplify USB connectivity from the user's perspective and provide robustness at low cost and complexity.

Hubs are wiring concentrators and enable the multiple attachment characteristics of USB. Attachment points are referred to as ports. Each hub converts a single attachment point into multiple attachment points. The architecture supports concatenation of multiple hubs.

The upstream port of a hub connects the hub towards the host. Each of the other downstream ports of a hub allows connection to another hub or function. Hubs can detect, attach and detach at each downstream port and enable the distribution of power to downstream devices. Each downstream port can be individually enabled and configured at either full or low speed. The hub isolates low speed ports from full speed signaling.

A hub consists of two portions: the Hub Controller and Hub Repeater. The repeater is a protocol-controlled switch between the upstream port and downstream ports. It also has hardware support for reset and suspend/resume signaling. The controller provides the interface registers to allow communication to/from the host. Hub specific status and control commands permit the host to configure a hub and to monitor and control its ports.

Device

A logical or physical entity that performs a function. The actual entity described depends on the context of the reference. At the lowest level, device may refer to a single hardware component, as in a memory device. At a higher level, it may refer to a collection of hardware components that perform a particular function, such as a Universal Serial Bus interface device. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical.

Downstream

The direction of data flow from the host or away from the host. A downstream port is the port on a hub electrically farthest from the host that generates downstream data traffic from the hub. Downstream ports receive upstream data traffic.

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Contents File///D/Grace/K1/english/170b2t/index.htm 6/2/2002 51347 PM Safety and Troubleshooting Information Safety precautions and maintenanceInstallation Locations About This Guide About This ManualNotational Descriptions Return to TOP Technical Specifications Product FeaturesProduct Information Optical characteristics Resolution & Preset ModesAutomatic Power Saving Freq kHz Resolution Freq HzPhysical Specifications Pin AssignmentPin Assignment Product Views Physical FunctionSwivel Installing your LCD Monitor Front View Product DescriptionOptimizing Performance Description of the On Screen Display On-Screen DisplayOSD Tree Page Digital signal input Page Customer Care & Warranty North America Canada USAColor temperature GlossaryEnergy Star Computers Programme Device Vertical refresh rate FAQs Frequently Asked Questions General FAQsFAQs Frequently Asked Questions Screen Adjustments Compatibility with other Peripherals LCD Panel Technology FAQs Frequently Asked Questions Ergonomics, Ecology, and Safety Standards Return to TOP Troubleshooting Screen is too bright or too dark Regulatory Information Environmental Requirements Philips 170B2T/170B2Y Commission Federale de la Communication FCC Declaration Vcci Notice Japan Only Varning Varoitus Earthed Return to TOP Information for Users in the U. S Other Related InformationInformation for Users outside the U.S Philips Pixel Defect Policy Proximity of Pixel Defects Black DOT Acceptable Level Defects Connecting to Your PC Accessory PackConnecting to Your PC Page Return to TOP Condition Remove and Re-install the BaseRemove the Base Re-install the Base Return to TOP Getting Started Getting StartedFor Windows XP Return to TOP Accessories optional Accessories optionalUSB Hub Multimedia Base VG3P31Protective Cover Protect the LCD screen of your Philips LCD monitorAccessories optional Multimedia Base Accessories optional Accessories optional Return to TOP Your International Philips F1rst Choice Warranty Thank you for purchasing this Philips monitorYour International Guarantee Limited Warranty Computer Monitor WHO is COVERED? What is COVERED?Before Requesting Service Philips Customer Care Center, P. O. Box 2976, Longview, TX F1rst Choice Contact Information 877 835Consumer Information Centers Eastern EuropeBrasil Canada Asia Pune Korea Africa Egypt Installing Your LCD monitor driver Download and PrintInstalling FPadjust Program Printing instructionsRead the FPReadme02.txt file before installing
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