User manual PHILIPS 107B55

[. . . ] electronic user's manual file:///D|/EDFU/crt_17_5/edoc/ENGLISH/107B/manual. html7/15/2004 3:42:53 PM Safety & Troubleshooting Safety and Troubleshooting Information Safety Precautions and Maintenance · Troubleshooting · Regulatory Information · Other Related Information Safety precautions and maintenance WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards, and/or mechanical hazards. Read and follow these instructions when connecting and using your computer monitor: q q q q q q Disconnect the monitor from the power supply if the monitor is not to be used for an extended period of time. Do not attempt to remove the back cover, as you will be exposed to a shock hazard. The back cover should only be removed by qualified service personnel. Do not place objects on top of the monitor cabinet, objects could fall into vents or cover them and prevent proper cooling of the monitor's electronic devices. [. . . ] 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 protocolcontrolled 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; file:///D|/EDFU/crt_17_5/edoc/ENGLISH/GLOSSARY/GLOSSARY. HTM (19 of 22)7/15/2004 3:43:31 PM Glossary 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. Upstream The direction of data flow towards the host. An upstream port is the port on a device electrically closest to the host that generates upstream data traffic from the hub. Upstream ports receive downstream data traffic. UPS (Universal Power Supply) The monitor with UPS feature can work in different countries with various mains voltage. RETURN TO TOP OF THE PAGE file:///D|/EDFU/crt_17_5/edoc/ENGLISH/GLOSSARY/GLOSSARY. HTM (20 of 22)7/15/2004 3:43:31 PM Glossary V Vertical dot pitch See Dot pitch. Vertical scanning frequency Expressed in Hz, this is the number of fields written to the screen every second in interlaced mode. [. . . ] 30 Shen nan zhong road, 518031 Shenzhen, P. R. China Phone: 800 820 5128 (Toll Free) Fax:21-65610647 CHANGSHA Room 18, He yi computer city, chao yang road, Changsha, P. R. China Phone: 800 820 5128 (Toll Free) Fax:21-65610647 WUHAN No. 60-66 gui yuan road, hong shan district, 430070 Wuhan, P. R. [. . . ]