Transition Networks SM24-100SFP-AH manual Cable Testing for Existing Category 5 Cable

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B Cables

Cable Testing for Existing Category 5 Cable

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”

Note that when testing your cable installation, be sure to include all patch cables between switches and end devices.

Adjusting Existing Category 5 Cabling to Run 1000BASE-T

If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are basically three measures that can be applied to try and correct the problem:

1.Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables.

2.Reduce the number of connectors used in the link.

3.Reconnect some of the connectors in the link.

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Contents SM24-100SFP-AH Page Fast Ethernet Switch SM24-100SFP-AH E082008-DT-R01 150200069500A Compliances and Safety Warnings LVD Warnhinweis Faseroptikanschlüsse Optische Sicherheit IiiPower Cord Set France et Pérou uniquement Sein und die Aufschrift HAR oder Basec tragen Documentation End of Product Life SpanManufacturing Materials ViiAbout This Guide ViiiContents Contents Switch Features Management Features Standards CompliancesTables Figure B-1 RJ-45 Connector Pin Numbers FiguresIntroduction OverviewNetwork Management Options Switch ArchitectureDescription of Hardware SFP SlotsPort and System Status LEDs LEDSystem Status LED System Status LEDs Connectivity Features and BenefitsPower Supply Sockets ExpandabilityManagement Introduction to Switching Network PlanningCollapsed Backbone Application ExamplesNetwork Planning Network Aggregation Plan Network Aggregation PlanRemote Connection with Fiber Cable Remote Connection with Fiber CableMaking Vlan Connections Making Vlan ConnectionsApplication Notes Package Contents Installing the SwitchEquipment Checklist Selecting a SiteOptional Rack-Mounting Equipment Installing the SwitchMounting Rack MountingDesktop or Shelf Mounting MountingInstalling an Optional SFP Transceiver Inserting an SFP Transceiver into a SlotConnecting to a Power Source Connecting to the Console PortWiring Map for Serial Cable Sgnd signal groundMaking Network Connections Connecting Network DevicesConnecting to PCs, Servers, Hubs and Switches Twisted-Pair DevicesNetwork Wiring Connections Making Network ConnectionsFiber Optic SFP Devices Making Fiber Port Connections1000BASE-T Cable Requirements Connectivity RulesMbps Gigabit Ethernet Collision Domain Mbps Fast Ethernet Collision Domain Mbps Ethernet Collision DomainCable Labeling and Connection Records Diagnosing Switch Indicators Appendix a TroubleshootingDiagnosing Power Problems with the LEDs In-Band Access Power and Cooling ProblemsInstallation TroubleshootingTwisted-Pair Cable and Pin Assignments Appendix B Cables10BASE-T/100BASE-TX Pin Assignments Crossover Wiring Straight-Through WiringCables 1000BASE-T Pin Assignments Twisted-Pair Cable and Pin Assignments BCable Testing for Existing Category 5 Cable Appendix C Supported SFP Transceivers Supported SFP Transceivers Appendix D Specifications Physical CharacteristicsManagement Features Switch FeaturesSpecifications Compliances StandardsStandards D Specifications Glossary Glossary-1Glossary Glossary-2Ieee 802.3u Glossary-3TIA Glossary-4Index Index-1Index Index-2Page SM24-100SFP-AH E082008-DT-R01 150200069500A