Cabletron Systems SEHI100TX-22 manual UTP Cable Specifications

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Chapter 3: Installation Requirements and Specifications

3.1.2UTP Cable Specifications

The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-T specifications. When connecting a 100BASE-TX Twisted Pair Segment to the SEHI twisted pair network ports and the EPIM-100TX module, the network must meet the following requirements:

Length

The IEEE 802.3u 100BASE-T standard requires that 100BASE-TX devices be able to transmit over a 100 meter (328 foot) link using Category 5 UTP wire. The cable used must meet the Horizontal requirements and 90-meter length limitations. Patch cable should be used on each end of the Horizontal wire to make connections to punch down blocks, panels, and other connecting devices. The combined lengths of the patch cords must not exceed 10 meters so the total segment length does not exceed 100 meters (328 feet).

Category 5 cables are marked on the cable jacket as Cat 5, Category 5, Level 5, Level V, or an equivalent.

Impedance

UTP cables typically have an impedance of between 85 to 110 ohms.

Jitter

Intersymbol interference and reflections cause jitter in the bit cell timing, resulting in data errors. A 100BASE-TX link must not generate more than

1.4ns of jitter. If the cable meets the impedance requirements for a 100BASE-TX link, jitter should not be a concern.

Crosstalk

Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 100BASE-TX transceivers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements.

Noise

Noise is caused by either crosstalk or externally induced impulses. Impulse noise may cause data errors if the impulses occur at very specific times during data transmission. Generally, the user need not be concerned about noise. If noise-related data errors are suspected, it may be necessary to either reroute the cable or eliminate the source of the impulse noise.

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SEHI100TX User’s Guide

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Contents Intelligent Stackable HUB USER’S Guide Page SEHI100TX User’s Guide DOC Notice Cabletron Software Program License Declaration of Conformity Contents Contents SEHI100TX User’s Guide Vii Contents Viii SEHI100TX User’s Guide Using this Manual Chapter IntroductionDocument Conventions Following conventions are used throughout this documentGetting Help Your email addressRelated Manuals Chapter Sehi Features and Options Sehi OverviewSehi Features Sehi Features and OptionsStackable Capabilities Optional Epims Rack Mounting CapabilitiesRemote Network Management HubSTACK Interconnect Cable Requirements Chapter Installation Requirements SpecificationsCable Specifications UTP Cable Specifications Multimode Fiber Optic Cable Specifications Network Cable Lengths Network Cable Lengths Network Port Specifications COM Port RequirementsOperating Specifications Power Supply RequirementsEnvironmental Requirements Agency ApprovalsPhysical Specifications Chapter Installation Unpacking the SehiPRE-INSTALLATION Checkout Nvram Switch LocationTabletop or Shelf Installation Rackmount InstallationAttaching the Strain-Relief Bracket Rackmount Installation Adequate clearance two inches on either side Powering UP and Stacking the Sehi Repeat steps 3 through 6 until all SEH hubs are connected Installing AN Epim Installing an EpimSEHI100TX User’s Guide Connecting to Network Ports Chapter Connecting to the NetworkConnecting the Sehi to the Network Connecting to an EPIM-100TX Sehi Network PortsRX+ TX+ Position = Not crossed over Connecting to an EPIM-100FX or EPIM-100FMB EPIM-100FX or EPIM-100FMB PortTesting the Installation SEHI100TX User’s Guide Chapter Troubleshooting Installation TestUsing Lanview Using Lanview Using the Reset Button Epim 1 RCV LEDSetting the Nvram Switch SEHI100TX User’s Guide Chapter Local Management Keyboard Conventions Keyboard Conventions FunctionManagement Terminal Setup Console Cable Configuration Management Terminal Setup Parameters Accessing Local Management Sehi Local ManagementAccessing Local Management Feature Selection Screen Feature Selection ScreenCommunity Name Table Screen Community Name Table ScreenManagement fields, excluding IP Address Editing the Community Name Field Configuration Screen ConfigurationSetting the IP Address Setting the Subnet Mask Exiting the Configuration Screen Setting the Default GatewayUsing the Port Enable Override Trap Table Screen Trap Table Screen1 Configuring the Trap Table Exiting the Trap Table Screen Snmp Tools ScreenFollowing sections describe Snmp Tools screen fields Getting Individual OIDs Setting an OID Getting the Next OIDViewing Multiple OIDs Walking Through OIDsStepping Through OIDs Cycling Through OIDsRepeating the Last OID Exiting the Snmp Tools ScreenDevice Statistics Screen Device Statistics ScreenDisplays the number of errors received This command lets the user enable the selected port Selecting the Appropriate Module/Port Using the Enable Port CommandUsing the Disable Port Command Setting the UPDATE-FREQency Field Exiting the Device Statistics ScreenEPIM-100TX Appendix a Epim SpecificationsEpim Specifications EPIM-100FX EPIM-100FMB Figure A-3 EPIM-100FMBSEHI100TX User’s Guide Appendix B Image File Download Using OID Strings Setting Unix Workstation AS Tftp Server Standard Local Download Table B-1 OIDs and Settings Index NumericsIndex-2 SEHI100TX User’s Guide Power Supply Cord
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SEHI100TX-22 specifications

Cabletron Systems SEHI100TX-22 is a high-performance network interface card that has been designed for reliable data transfer in various networking environments. Ideal for both enterprise and small business applications, the SEHI100TX-22 delivers exceptional performance at a competitive price point.

One of the standout features of the SEHI100TX-22 is its support for 100Base-TX Ethernet standards, which enables high-speed data transmission at rates of up to 100 Mbps. This high throughput capacity makes it an excellent choice for organizations that require swift and efficient data handling, particularly in environments with heavy network traffic.

The card is equipped with two RJ-45 connectors, allowing it to support dual-port configurations. This dual-port setup enhances networking capabilities by enabling fault tolerance and load balancing, ensuring that the network remains operational even in the event of a failure. Moreover, it supports full-duplex operation, allowing for simultaneous bi-directional data transmission, further improving overall network efficiency and performance.

Another significant advantage of the SEHI100TX-22 is its compatibility with a wide range of operating systems and platforms, including Windows, Linux, and various UNIX variants. This versatility ensures that it can be seamlessly integrated into existing network infrastructures without the need for extensive configuration or modification.

In terms of installation and maintenance, the SEHI100TX-22 is user-friendly, thanks to its Plug and Play capability. This feature allows for easy installation; users can simply insert the card into an available PCI slot, and the operating system will automatically recognize and configure the device, minimizing downtime and simplifying the setup process.

Additionally, the SEHI100TX-22 incorporates advanced technologies like Auto-Negotiation, which automatically detects the speed and duplex capabilities of the connected device, thus optimizing the network performance. The card also features various onboard diagnostic LEDs, providing real-time feedback on connection status and data activity, which aids in troubleshooting and performance monitoring.

In summary, the Cabletron Systems SEHI100TX-22 offers a robust set of features that cater to the demands of modern network environments. With its high-speed capabilities, dual-port support, compatibility across multiple operating systems, and user-friendly installation process, it remains a solid choice for organizations looking to enhance their networking performance and reliability.
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