Cabletron Systems SEH-34, SEH-32, SEH-24 AUI Cable Requirements for the EPIM-A and EPIM-X Modules

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INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.1.6AUI Cable Requirements for the EPIM-A and EPIM-X Modules

When you connect an external network segment to the SEH (via an EPIM-A or EPIM-X), the AUI cable must meet the following requirements:

AUI Cable

The AUI cable connecting the module to a device must be IEEE 802.3 type cable.

Length

The AUI Cable must not exceed 50 meters in length. If 28 AWG thin ofﬁce drop AUI cable is used, then the maximum cable length is limited to 50 feet (15.24 meters).

Grounding

The connector shell of the EPIM-A and the EPIM-X are connected to ground.

2.2NETWORK PORT SPECIFICATIONS

The SEH-22 and SEH-24 network ports are shielded RJ45 connectors that support both STP and UTP cabling. The SEH-32 and SEH-34 provide a 50 pin Champ style connector for network connections. The following sections provide speciﬁcations for each SEH model.

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Contents 10BASE-T Stackable HUB USER’S Guide Printed On Recycled Paper DOC Notice FCC NoticeCabletron Software Program License Cabletron SYSTEMS, INC Program License AgreementUnited States Government Restricted Rights Exclusion of Warranty Disclaimer of LiabilityTable of Contents Appendix B Twisted Pair Wiring Tables A-1 Contents InstallationConnecting to the Network TroubleshootingChapter Introduction Using this ManualSEH Overview Introduction Getting HelpRepeater Functionality SEH FeaturesPolarity Detection and Correction Stackable Capabilities Optional FeaturesEpim Rack Mount or Wall Mount Hardware Daughter Board Upgrade KitHubSTACK Interconnect Cables Part Description Application NumberHubSTACK Interconnect Cable Requirements Cable SpecificationsJitter LengthInsertion Loss ImpedanceNoise DelayTemperature CrosstalkCable Type Attenuation Maximum Cable Length Fiber Optic Budget and Propagation DelayInstallation REQUIREMENTS/SPECIFICATIONS Terminators ConnectorsThin-net Network Requirements for the EPIM-C Module Cable TypeAUI Cable Requirements for the EPIM-A and EPIM-X Modules Network Port SpecificationsAUI Cable SEH-32 and SEH-34 Network Port Speciﬁcations SEH-22 and SEH-24 Network Port SpeciﬁcationsPin Champ Connector EPIM-T Installation REQUIREMENTS/SPECIFICATIONS Epim SpecificationsParameter Typical Worst Worst Case Typical Value Budget EPIM-F1/F2EPIM-F3 EPIM-F3Parameter Typical Minimum Maximum EPIM-C Connector TypeEPIM-A and EPIM-X EPIM-A and EPIM-X AUI PortGeneral Operating SpecificationsDelay Times Start of Packets Delay Times JAMJAM Output Fault ProtectionPower Supply Requirements Output Min. Load Max. Load Max PowerPhysical SafetyUnpacking the SEH Installing the SEHStacking the SEH SEH-2410BASE-T HUB with Lanview Disconnect SEH and Sehi Interconnect Cables At the OUT Port Attaching the Strain Relief BracketRack Mounting the SEH Installing the SEH in the RackWall Mounting the SEH Shelf or Table-top Installation Free-Standing InstallationInstallation Connecting the SEH to the Power Source Connecting Network Ports SEH-22 and SEH-24 Connecting the SEH to the NetworkEPIM-2 Connecting Network Ports SEH-32 and SEH-34 EPIM-T Cross-over Switch Connecting a UTP Segment to an EPIM-TConnecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C EPIM-A Connecting an AUI Cable to an EPIM-AConnecting an AUI Cable to an EPIM-X On Position Toward Back Epim OFF Position Toward Front Finishing the InstallationInstallation CHECK-OUT Chapter TroubleshootingUsing Lanview Mgmt Green Flashing PWR GreenRCV Yellow Flashing CLN RedLNK Green Twisted Pair Wiring Tables Appendix a Twisted Pair Wiring TablesA-2 A-3 A-4 10BASE-T From Punch Down To RJ-45 Into Block Wallplate OfﬁceDrop Device A-6 A-7 Champ Down Block If Required Ethernet Device SEH-32/34 Punch Wall PlateFigure A-1. Punch Down Block A-9 French Power Supply CordGerman Spanish