3Com 3CSOHO100 manual 10BASE-T Speciﬁcations, 100BASE-TX Operation, 100BASE-TX Speciﬁcations

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Cabling Requirements

59

10BASE-T Speciﬁcations

The 10BASE-T name indicates a signaling speed of 10 Mbps and twisted-pair wiring. Base stands for baseband, which denotes a technique for transmitting signals as direct-current pulses rather than modulating them onto separate carrier frequencies.

A wiring topology using 10BASE-T speciﬁes a wiring hub, cable arranged in a star conﬁguration, and unshielded twisted-pair cable. Each node has a separate cable run that must not exceed 100 meters (328 ft) from the node to the hub.

100BASE-TX Operation

100BASE-TX is the Institute of Electrical and Electronics Engineers (IEEE) 802.3u standard for Ethernet signaling over unshielded twisted-pair wire at 100 Mbps.

Fast Ethernet uses 100BASE-TX as its primary cabling scheme. Fast Ethernet’s characteristics include:

■A data rate of 100 Mbps

■A broadcast architecture

■A speciﬁc media-access control (MAC) scheme

100BASE-TX Speciﬁcations

The 100BASE-TX name indicates a signaling speed of 100 Mbps and twisted-pair wiring. Base stands for baseband, which denotes a technique for transmitting signals as direct-current pulses rather than modulating them onto separate carrier frequencies.

A wiring topology using 100BASE-T speciﬁes a wiring hub, cable arranged in a star conﬁguration, and unshielded twisted-pair cable. Each node has a separate cable run that must not exceed 100 meters (328 ft) from the node to the hub.

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Contents Fast Ethernet Network Interface Card User Guide Lifetime Limited Warranty Sweden, Finland, Norway Asia Italy, Greece, Spain, Portugal, MaltaAustralia, New Zealand Japan Belgium, Netherlands, Luxembourg DenmarkMember of the 3Com OfficeConnect family 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Configuring the NIC Technical Support Page Figures Tables Conventions Icon DescriptionYear 2000 Compliance Convention DescriptionWhat This Guide Covers What This Chapter CoversUnderstanding Networking Sample Network Computer 1Computer PrinterPeer-to-Peer Networks Client/Server Networks Ethernet and Fast Ethernet Networking ProtocolsUnderstanding Network Interface Cards About the OfﬁceConnect NICRequired Software Required HardwareRequired Cabling Preparing for Installation Type Maximum Network Cable Required Cable LengthInserting the NIC See your PC documentation for detailsDo not turn on the power to the PC Connecting the NIC to Your Network Connecting the Network Cable to the NIC RJ-45 portNext step is to install the network driver. Go to Chapter Page Windows Right-click the My Computer icon, and then click PropertiesTurn on the power to the PC Windows 95 Version aYou must reboot your PC to complete the installation Click OKEnter your user name and password, and then click OK Windows 95 Version BClick Finish To install the network driver in a PC running Windows Click Yes to restart the PC Windows NT Windows NTClick Add Adapter Remove the EtherDisk diskette from drive a Verifying Successful InstallationWindows 95 and Windows Double-clickNetwork adapters Double-click the File Manager icon Troubleshooting Basic Troubleshooting TipsInterpreting the LEDs State MeaningStarting the 3Com NIC Diagnostics Program Double-click the 3Com icon in the Windows system trayClick Cancel to exit the 3Com NIC Diagnostics program General ScreenClick the Diagnostics tab Running the NIC Self-TestsRunning the Echo Test Click Start in the Self-Test panelOn both PCs On the ﬁrst PC the sending PCEcho Test Sender Screen Accessing the Help System From the Windows Start menu, select ProgramsAccessing 3Com Support Services Click OK Click the Support tab. The Support screen appearsClick OK Click the Support tab Support ScreenRemoving NIC Software Click the Device Manager tabClick Yes Frequently Asked Questions Question AnswerQuestion Answer Page Auto Select Option Description Available SettingsNormal Displaying Conﬁguration Settings Click NIC Details Click OK Click the Properties tab Changing Conﬁguration SettingsClick OK to exit this screen Change the NIC’s conﬁguration Page Speciﬁcations Cabling RequirementsCategory Use Unshielded Twisted-Pair Cable10BASE-T Operation 100BASE-TX Speciﬁcations 10BASE-T Speciﬁcations100BASE-TX Operation Page 3Com FTP Site Online Technical ServicesWorld Wide Web Site Access by Digital Modem 3Com Bulletin Board ServiceAccess by Analog Modem 847 262Support from 3Com 3ComFacts Automated Fax ServiceSupport from Your Network Supplier 408 727Country Telephone Number Asia Paciﬁc Rim EuropeNorth America Returning Products for RepairCountry Telephone Number Latin America Country Telephone Number Fax NumberLatin America 408 326 A. and Canada 800 NET 3Com 800 638 Ethernet Bus masteringClient/server network Half-duplex Fast EthernetFull-duplex HubServer SwitchPeer-to-peer network Unshielded twisted pair UTP cablingPage Index NumbersNIC Index Page 3Com Corporation Limited Warranty FCC Class B Statement FCC Declaration of Conformity