Epim-T | Cabletron Systems SEHI-22, SEHI-32, SEHI-24, SEHI-34

INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.3EPIM SPECIFICATIONS

EPIMs let you connect the SEHI to the main network using different media types. Cabletron Systems offers a variety of EPIMs. The following sections explain speciﬁcations for each EPIM.

2.3.1EPIM-T

The EPIM-T is an RJ45 connector supporting UTP cabling. It has an internal Cabletron Systems TPT-T™ 10BASE-T Twisted Pair Transceiver.

The slide switch on the EPIM-T determines the cross-over status of the cable pairs. If the switch is on the X side, the pairs are internally crossed over. If the switch is on the = side, the pairs are not internally crossed over. Figure 2-3 shows the pinouts for the EPIM-T in both cross-over positions.

Position X (crossed over)

1. RX+	5. NC
2. RX-	6. TX-
3. TX+	7. NC
4. NC	8. NC

Position = (not crossed over)

1. TX+	5.	NC
2. TX-	6.	RX-
3. RX+	7. NC
4. NC	8. NC

Figure 2-3. EPIM-T Pinouts

Page 2-10

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Cabletron Systems SEHI-22, SEHI-32, SEHI-24, SEHI-34 Installation REQUIREMENTS/SPECIFICATIONS Epim Specifications, Epim-T

Contents

10BASE-T Intelligent Stackable HUB USER’S Guide Printed On Recycled Paper FCC Notice DOC Notice Cabletron SYSTEMS, INC Program License Agreement Cabletron Software Program License Exclusion of Warranty Disclaimer of Liability United States Government Restricted Rights Table of Contents Installation Connecting to the NetworkTroubleshooting Local Management Contents Appendix B Twisted Pair Wiring Tables A-1 Using this Manual Chapter Introduction Introduction Getting Help Sehi Overview Sehi Features Repeater FunctionalityPolarity Detection and Correction Flash EEPROMs Reset Button Lanview LEDsLocal Management Stackable Capabilities Introduction Optional Features Epim Daughter Board Upgrade Kit Rack Mount or Wall Mount HardwareRelated Manuals Cable Specifications HubSTACK Interconnect Cable Requirements Length Insertion LossImpedance Jitter Delay TemperatureCrosstalk Noise Fiber Optic Budget and Propagation Delay Cable Type Attenuation Maximum Cable Length Installation REQUIREMENTS/SPECIFICATIONS Connectors Thin-Net Network Requirements for the EPIM-C ModuleCable Type Terminators Network Port Specifications AUI Cable Requirements for the EPIM-A and EPIM-X ModulesAUI Cable SEHI-22 and SEHI-24 Network Port Speciﬁcations SEHI-32 and SEHI-34 Network Port Speciﬁcations Pin Champ Connector Installation REQUIREMENTS/SPECIFICATIONS Epim Specifications EPIM-T EPIM-F1 and EPIM-F2 Parameter Typical Worst Worst Case Typical Value Budget EPIM-F3 EPIM-F3 Parameter Typical Minimum Maximum Connector Type EPIM-C EPIM-A and EPIM-X AUI Port EPIM-A and EPIM-X COM Transceiver Requirements Delay Times Start of Packets Delay Times JAMGeneral Preamble Fault Protection Power Supply RequirementsOutput Min. Load Max. Load Max Power JAM Output Safety Physical Installing the Sehi Unpacking the Sehi Stacking the Sehi Stacking the Sehi Attaching the Strain Relief Bracket Disconnect SEH and Sehi Interconnect Cables At the OUT Port Installing the Sehi in the Rack Rack Mounting the Sehi Wall Mounting the Sehi Free-Standing Installation Shelf or Table-top Installation Installation Connecting the Sehi to the Power Source Connecting the Sehi to the Network Connecting to Network Ports, SEHI-22 and SEHI-24 EPIM-2 Connecting to Network Ports, SEHI-32 and SEHI-34 Connecting a UTP Segment to an EPIM-T EPIM-T Cross-over Switch Connecting 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-A Connecting an AUI Cable to an EPIM-X Finishing the Installation On Position Toward Back Epim OFF Position Toward Front Chapter Troubleshooting Installation CHECK-OUT Using Lanview PWR CPU Troubleshooting CLN Using the Reset ButtonRCV LNK Chapter Local Management Local Management Management Terminal Requirements Console Cable Conﬁguration Management Terminal Connection Management Terminal Setup Parameters Menu Function Selection Display SetupGeneral Setup Setup Local Management Accessing Local Management Sehi Local Management Feature Selection Screen Local Management Using the Local Management Screens Community Name Table Screen Access Community Name Editing the Community Name Field Conﬁguration Screen IP Address Default Gateway Port Enable OverrideSetting the IP Address SubNet Mask Setting the Subnet Mask Setting the Default Gateway Using the Port Enable Override Exiting the Configuration Screen Trap Table Screen Configuring the Trap Table Snmp Community NameTraps Trap IP Address Exiting the Trap Table Screen Snmp Tools Screen OID Prepend GetSet Get Next Walk Recall-OIDStep Cycles Getting Individual OIDs Getting the Next OID Setting an OID Viewing Multiple OIDs Walking Through OIDs Stepping Through OIDsCycling Through OIDs Exiting the Snmp Tools Screen Device Statistics Screen Errors Received CRC ErrorsAlignment Errors Port Admin. Status Enable Port Disable PortUpdate-Freq Port Seg. Status Using the Enable Port Command Selecting the Appropriate Module/Port Using the Disable Port Command Exiting the Device Statistics Screen Appendix a Twisted Pair Wiring Tables Twisted Pair Wiring Tables A-2 A-3 A-4 From Punch Down To RJ-45 Into Block Wallplate Ofﬁce 10BASE-TDrop Device A-6 A-7 SEHI-32/34 Punch Wall Plate Champ Down Block If Required Ethernet Device Figure A-1. Punch Down Block A-9 Power Supply Cord GermanSpanish French