Rack Mounting the SEH | Cabletron Systems SEH-24, SEH-32, SEH-34

INSTALLATION

3.2.3Rack Mounting the SEH

Refer to Figure 3-4 and perform these steps to install the SEH in a 19-inch rack.

1.Remove four cover screws (two from each side) located along the front edges of each side of the SEH.

2.Using the four cover screws removed in step 1, attach the rack mounting brackets to each end of the SEH.

Rack Mounting

Brackets (2)

HubSTACK 10BASE-T HUB WITH LANVIEW®

SEH-24

Screws (4)

Figure 3-4. Installing the Rack Mount Brackets

3.With the mounting brackets installed, position the SEH between the vertical frame members of the 19-inch rack and fasten it securely with the mounting screws as shown in Figure 3-5.

19-Inch Rack

HubSTACK 10BASE-T HUB WITH LANVIEW®

SEH-24

Screws (4)

Figure 3-5. Installing the SEH in the Rack

Page 3-5

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Cabletron Systems SEH-24, SEH-32, SEH-34 manual Rack Mounting the SEH, Installing the SEH in the Rack

Contents

10BASE-T Stackable HUB USER’S Guide Printed On Recycled Paper DOC Notice FCC Notice Cabletron Software Program License Cabletron SYSTEMS, INC Program License Agreement United States Government Restricted Rights Exclusion of Warranty Disclaimer of Liability Table of Contents Appendix B Twisted Pair Wiring Tables A-1 Contents InstallationConnecting to the Network Troubleshooting Chapter Introduction Using this Manual SEH Overview Introduction Getting Help Polarity Detection and Correction SEH FeaturesRepeater Functionality Epim Optional FeaturesStackable Capabilities Rack Mount or Wall Mount Hardware Daughter Board Upgrade KitHubSTACK Interconnect Cables Part Description Application Number HubSTACK Interconnect Cable Requirements Cable Specifications Jitter LengthInsertion Loss Impedance Noise DelayTemperature Crosstalk Cable Type Attenuation Maximum Cable Length Fiber Optic Budget and Propagation Delay Installation REQUIREMENTS/SPECIFICATIONS Terminators ConnectorsThin-net Network Requirements for the EPIM-C Module Cable Type AUI Cable Network Port SpecificationsAUI Cable Requirements for the EPIM-A and EPIM-X Modules SEH-32 and SEH-34 Network Port Speciﬁcations SEH-22 and SEH-24 Network Port Speciﬁcations Pin Champ Connector EPIM-T Installation REQUIREMENTS/SPECIFICATIONS Epim Specifications Parameter Typical Worst Worst Case Typical Value Budget EPIM-F1/F2 EPIM-F3 EPIM-F3 Parameter Typical Minimum Maximum EPIM-C Connector Type EPIM-A and EPIM-X EPIM-A and EPIM-X AUI Port General Operating SpecificationsDelay Times Start of Packets Delay Times JAM JAM Output Fault ProtectionPower Supply Requirements Output Min. Load Max. Load Max Power Physical Safety Unpacking the SEH Installing the SEH Stacking the SEH SEH-2410BASE-T HUB with Lanview Disconnect SEH and Sehi Interconnect Cables At the OUT Port Attaching the Strain Relief Bracket Rack Mounting the SEH Installing the SEH in the Rack Wall Mounting the SEH Shelf or Table-top Installation Free-Standing Installation Installation Connecting the SEH to the Power Source Connecting Network Ports SEH-22 and SEH-24 Connecting the SEH to the Network EPIM-2 Connecting Network Ports SEH-32 and SEH-34 EPIM-T Cross-over Switch Connecting a UTP Segment to an EPIM-T Connecting 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-A Connecting an AUI Cable to an EPIM-X On Position Toward Back Epim OFF Position Toward Front Finishing the Installation Installation CHECK-OUT Chapter Troubleshooting Using Lanview Mgmt Green Flashing PWR Green LNK Green CLN RedRCV Yellow Flashing Twisted Pair Wiring Tables Appendix a Twisted Pair Wiring Tables A-2 A-3 A-4 Drop Device From Punch Down To RJ-45 Into Block Wallplate Ofﬁce10BASE-T A-6 A-7 Champ Down Block If Required Ethernet Device SEH-32/34 Punch Wall Plate Figure A-1. Punch Down Block A-9 French Power Supply CordGerman Spanish