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3Com 5108M-TP Environmental Specifications, Mechanical Specifications, General Specifications

Models: 5108M-TP

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Environmental Specifications

Operating Temperature: 0° to 50° C (32° to 122° F)

Storage Temperature: -30° to 65° C (-22° to 149° F)

Humidity: less than 95%, non-condensing

BTU/hr: 30

Mechanical Specifications

Dimensions: 1.0" W x 10.25" L x 8.5" H (2.54 cm x 26.04 cm x 21.6 cm)

Weight: 1.25 lb. (0.57 kg.)

General Specifications

Data Rate: 10 Mbps (million bits per second)

Data modulation: Manchester

Diagnostic modulation: Link Integrity pulse

Collision detection: 100% deterministic

Maximum number of nodes: 1024

Configuration rules: supports IEEE 802.3 controllers and IEEE 802.3 repeaters

Jabber Protection: 6.5 milliseconds

Port Connectors: Shielded 8-pin modular telephone jack, compatible with an unshielded connector

Cabling: 22, 24, or 26 AWG unshielded or shielded twisted pair cable

Cable differential impedance: 85 ohms to 150 ohms over 1 to 16 MHz band

A - 2 ONline Ethernet 10BASE-T Module User’s Guide

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3Com 5108M-TP manual Environmental Specifications, Mechanical Specifications, General Specifications

Contents

ONline Ethernet 10BASE-T Module User’s Guide Document Number Printed March Model Number 5108M-TP 3Com Corporation118 Turnpike Road Southborough, MA U.S.A 508 FAX 508 VDE Class B Compliance Federal Communications Commission NoticeCanadian Emissions Requirements EN55022/CISPR22 ComplianceONline Ethernet 10BASE-T Module User’s Guide Restricted Rightsiv ONline Ethernet 10BASE-T Module User’s Guide Chapter 1 - Introduction ContentsHow to Use This Guide Chapter 2 - Designing and Expanding the NetworkAppendix A - Specifications Chapter 3 - Installing and Operating the ModuleChapter 4 - Troubleshooting Appendix B - Technical SupportFigures viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page How to Use This Guide AudienceStructure of This Guide Indicates Document ConventionsConvention ExampleA Warning. A Related DocumentsA Caution. A Warning Wear eye3Com Documents Reference DocumentsPage 1 Introduction The ONline Ethernet 10BASE-T ModuleIndicators Figure 1-1. 10BASE-T Module Faceplate and ONline System Concentrator Introduction 1Color Dip SwitchesLED Name StateDip Switch SW1 Port Status Figure 1-2. 10BASE-T Module and Dip Switch LocationsSwitch Setting Dip Switch SW3 Crossover Mode, Channel Select, SquelchSwitch DefaultSwitch Crossover Mode SwitchSquelch Mode Switch Switch SettingChannel Select Switch Settings 1 - 8 ONline Ethernet 10BASE-T Module User’s GuideSwitch Dip Switch SW6 Link IntegrityChannel Selection SwitchSwitch Related FeaturesLED and Channel Verification Switch SettingLED State Channel ConfigurationThe ONline Ethernet Network Management Module Table 1-6. Channel Check Codes1 - 12 ONline Ethernet 10BASE-T Module User’s Guide 2 Designing and ExpandingtheNetwork Designing and Expanding the Network 2Understanding the General Rules Basic Network RulesRecommendations/Notes RuleDefinition Table 2-1. Seven Basic Network RulesDefinition Table 2-1. Seven Basic Network Rules ContinuedRule Recommendations/NotesRecommendations/Notes RuleDefinition The fiber link distancesEquivalent LAN EquivalenceLAN Product Distance metersLAN Product Fiber Backbone, Twisted Pair To-The-DeskTable 2-2. LAN Product Equivalent Distances Continued EquivalentFiber Backbone, Twisted Pair To-The-Desk Example Figure 2-1. Sample Configuration Distance Calculation 22 .6mm Cable GaugeSupports Link Distances Up To 150mTwisted Pair Backbone, Twisted Pair To-The-Desk Figure 2-2. Unshielded Twisted Pair NetworkRedundant Links Figure 2-3. Redundant Twisted Pair ConfigurationTo set redundancy between two 10BASE-T Modules, connect two links between the modules. The redundant link must be connected to a port on the same 10BASE-T Module as the primary link. Use a crossover adapter between each link unless you choose to uncross port 8 on one of the modules to make the connection. Refer to Chapter 1 for information on using crossover mode. Then use the SET PORT slot.port MODE REDUNDANT slot.port command to specify which port is the primary link and which is the backup link Patch Panels 2 - 14 ONline Ethernet 10BASE-T Module User’s Guide3 Installing and Operating the Module Precautionary ProceduresUnpacking Procedures Installation ProceduresFigure 3-1. Installing a 10BASE-T Module Figure 3-2. 10BASE-T Module Cable Connection 4 Troubleshooting TroubleshootingProblem Troubleshooting With the Status LEDsTroubleshooting IndicationLED State TroubleshootingProblem IndicationLED State TroubleshootingProblem IndicationSolutions Troubleshooting With the Activity LEDsPossible Problem TroubleshootingTechnical Assistance A Specifications ONline Ethernet 10BASE-T Module SpecificationsElectrical Specifications Environmental Specifications Mechanical SpecificationsGeneral Specifications Twisted Pair Connectors and Cables Twisted Pair ConnectorsTwisted Pair Cables Figure A-1. RJ45 Connector Pin-outsConnecting Twisted Pair Cables Page B Technical Support On-line Technical SupportSupport from Your Network Supplier Email Technical SupportWorld Wide Web Site Support from 3Com Accessing the 3Com MIB Returning Products for Repair3Com Technical Publications Page Index Numerics