APPENDIX A

CABLE REQUIREMENTS

This appendix provides cable requirements for each of the EMC38-12 ports.

A.1 10Base-T TWISTED PAIR REQUIREMENTS

When you connect a 10Base-T twisted pair segment to the EMC38-12, the device at the other end of the twisted pair segment must meet IEEE

802.310Base-T specifications. Your 10Base-T twisted pair segment must meet the following requirements.

Segment Length

The IEEE 802.3 10Base-T standard requires that 10Base-T devices must be able to transmit from 0 to at least 100 meters (328 feet) per segment of 24-gauge unshielded twisted pair (UTP) cable.

Insertion Loss

The maximum insertion loss allowed for a 10Base-T segment is 11.5 db at all frequencies between 5.0 and 10.0 MHz. This includes the attenuation of the cable, connectors, and patch panel.

Impedance

10Base-T specifies cable impedance between 85 and 110 ohms.

EMC38-12 USER’S GUIDE

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Cabletron Systems EMC38-12 manual Appendix a Cable Requirements, 10Base-T Twisted Pair Requirements

EMC38-12 specifications

Cabletron Systems EMC38-12 is a sophisticated networking device designed to meet the increasing demands for robust and efficient data communication in enterprise environments. Known for its reliability, the EMC38-12 is a multi-access switching hub that provides users with a seamless experience in connecting various networked devices.

One of the primary features of the EMC38-12 is its support for multiple protocols. This flexibility allows organizations to integrate both legacy systems and modern systems, ensuring ease of transition and compatibility. The device is equipped with advanced switching capabilities that facilitate high-speed data transmission, significantly improving overall network performance.

The EMC38-12 boasts a 12-port configuration, which permits a variety of device connections. Each port is capable of auto-sensing, making it compatible with both 10Base-T and 100Base-T standards. This versatility helps in accommodating a wide range of devices, from desktops to printers, enhancing the overall network's scalability. Moreover, the device maintains a compact form factor, making it ideal for deployments in spaces where real estate is limited.

In terms of security, the EMC38-12 offers integrated features that safeguard sensitive data across the network. With built-in support for VLANs (Virtual Local Area Networks), organizations can segment network traffic effectively, providing an additional layer of security. The device also supports network monitoring protocols, enabling IT administrators to maintain oversight over traffic patterns and quickly address potential issues.

The EMC38-12 utilizes advanced technologies such as IEEE 802.1Q for VLAN tagging and 802.3x for flow control, ensuring efficient data processing. These technologies contribute to the device's ability to manage network congestion and ensure smooth data flow even during peak usage times.

Finally, Cabletron Systems has designed the EMC38-12 with maintainability in mind. The device features hot-swappable components, reducing downtime during maintenance or upgrades. This aspect, along with robust engineering, ensures that the EMC38-12 is built to last in demanding operational environments.

Overall, Cabletron Systems EMC38-12 is a powerful solution that combines versatility, performance, and security, making it an excellent choice for any organization looking to enhance its network capabilities. With its innovative features and technologies, the EMC38-12 stands out as a vital component for modern networking infrastructures.