Cabletron Systems SEH-32, SEH-34 Thin-net Network Requirements for the EPIM-C Module, Cable Type

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INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.1.5Thin-net Network Requirements for the EPIM-C Module

When you connect a thin-net segment to the SEH (via an EPIM-C), your network must meet the following requirements:

Cable Type

50 ohm RG-58A/U type coaxial cable must be used when making up a thin-net cable segment.

Length

The thin-net segment must be no longer than 185 meters.

Terminators

A 50 ohm terminator must be connected to the far end of each thin-net segment.

Connectors

A maximum of 29 tee-connectors may be used throughout the length of cable segment for host connections. If an excessive number of barrel connectors are used within the cable segment, such as finished wall plates with BNC feed-throughs, then a reduced number of host connections may be required. For special network design, contact Cabletron Systems Technical Support.

Grounding

For safety, ground only one end of a thin-net segment. Do NOT connect EPIM BNC ports to earth ground.

Warning: Connecting a thin-net segment to earth ground at more than one point could produce dangerous ground currents.

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Contents 10BASE-T Stackable HUB USER’S Guide Printed On Recycled Paper FCC Notice DOC NoticeCabletron SYSTEMS, INC Program License Agreement Cabletron Software Program LicenseExclusion of Warranty Disclaimer of Liability United States Government Restricted RightsTable of Contents Troubleshooting Contents InstallationConnecting to the Network Appendix B Twisted Pair Wiring Tables A-1Using this Manual Chapter IntroductionIntroduction Getting Help SEH OverviewSEH Features Repeater FunctionalityPolarity Detection and Correction Optional Features Stackable CapabilitiesEpim Part Description Application Number Daughter Board Upgrade KitHubSTACK Interconnect Cables Rack Mount or Wall Mount HardwareCable Specifications HubSTACK Interconnect Cable RequirementsImpedance LengthInsertion Loss JitterCrosstalk DelayTemperature NoiseFiber Optic Budget and Propagation Delay Cable Type Attenuation Maximum Cable LengthInstallation REQUIREMENTS/SPECIFICATIONS Cable Type ConnectorsThin-net Network Requirements for the EPIM-C Module TerminatorsNetwork Port Specifications AUI Cable Requirements for the EPIM-A and EPIM-X ModulesAUI Cable SEH-22 and SEH-24 Network Port Specifications SEH-32 and SEH-34 Network Port SpecificationsPin Champ Connector Installation REQUIREMENTS/SPECIFICATIONS Epim Specifications EPIM-TEPIM-F1/F2 Parameter Typical Worst Worst Case Typical Value BudgetEPIM-F3 EPIM-F3Parameter Typical Minimum Maximum Connector Type EPIM-CEPIM-A and EPIM-X AUI Port EPIM-A and EPIM-XDelay Times JAM Operating SpecificationsDelay Times Start of Packets GeneralOutput Min. Load Max. Load Max Power Fault ProtectionPower Supply Requirements JAM OutputSafety PhysicalInstalling the SEH Unpacking the SEHStacking the SEH SEH-2410BASE-T HUB with Lanview Attaching the Strain Relief Bracket Disconnect SEH and Sehi Interconnect Cables At the OUT PortInstalling the SEH in the Rack Rack Mounting the SEHWall Mounting the SEH Free-Standing Installation Shelf or Table-top InstallationInstallation Connecting the SEH to the Power Source Connecting the SEH to the Network Connecting Network Ports SEH-22 and SEH-24EPIM-2 Connecting Network Ports SEH-32 and SEH-34 Connecting a UTP Segment to an EPIM-T EPIM-T Cross-over SwitchConnecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C Connecting an AUI Cable to an EPIM-A EPIM-AConnecting an AUI Cable to an EPIM-X Finishing the Installation On Position Toward Back Epim OFF Position Toward FrontChapter Troubleshooting Installation CHECK-OUTUsing Lanview PWR Green Mgmt Green FlashingCLN Red RCV Yellow FlashingLNK Green Appendix a Twisted Pair Wiring Tables Twisted Pair Wiring TablesA-2 A-3 A-4 From Punch Down To RJ-45 Into Block Wallplate Office 10BASE-TDrop Device A-6 A-7 SEH-32/34 Punch Wall Plate Champ Down Block If Required Ethernet DeviceFigure A-1. Punch Down Block A-9 Spanish Power Supply CordGerman French