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Summary of Contents for Lantronix MINI FAST LFH4-M
- Page 1 LFH4-M/LFH8-M Mini Fast Hubs Installation Guide...
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Page 2: Table Of Contents
Table of Contents CHAPTER 1. Introduction 1.1 Product Introduction ....... 2 1.2 Features . -
Page 3: Chapter 1 Introduction
CHAPTER 1 Introduction 1.1 Product Introduction Congratulations on your purchase of the LFH 4-port or 8-port Mini Fast Ethernet Hub! The LFH4-M and LFH8-M are designed to give you the ultimate in flexibility, ease-of-use, and reliability. The LFH4-M and LFH8-M Mini Fast Ethernet Hubs are 100BASE-TX multiport Class II repeaters for use with networks using Unshielded Twisted Pair (UTP) category 5 cable or Shielded Twisted Pair (STP) cable. -
Page 4: Features
1.2 Features The LFH4-M provides four 100BASE-TX ports and the LFH8-M provides eight 100BASE-TX ports for Fast Ethernet connectivity The LFH4-M/LFH8-M comply with the IEEE 802.3u Fast Ethernet standard Supports Category 5 Unshielded Twisted Pair (UTP) or Shielded Twisted Pair (STP) cable An Uplink port on the front panel enables the LFH4-M/LFH8-M to be connected to another 100BASE-TX hub using a straight-through cable... -
Page 5: Product Specifications
1.3 Product Specifications Standards IEEE 803.3u 100BASE-TX Ethernet Network Media 100BASE-TX Unshielded Twisted Pair cabling (Category 5 UTP) Max. Lengths 100 meter hub-to-station connection 5 meter hub-to-hub connection Connectors 8/16 RJ45 connectors, one crossover ÒUplinkÓ port LED indicators Power, Collision, Partition, Link/Activity Dimensions 221mm x 111mm x 26mm (L x W x H) Environment... -
Page 6: Chapter 2 Using The Lfh Hub
In a repeater environment, 100BASE-TX only allows a single layer of cascaded hubs. Switching hubs, such as LantronixÕs LSW8FA, may increase the network diameter for 100BASE-TX networks by buffering data packets. Each port can be connected to a separate LAN segment, each with a maximum diameter of 205 meters, thereby increasing the overall 100BASE-TX network diameter. -
Page 7: Installation
Not only does 100BASE-TX have a different data transmission scheme, it also has different cabling requirements. As previously noted, 100BASE-TX requires data-grade (Category 5) UTP cable. Some installations have Category 5 cabling but do not have wall outlets and wiring closet punch-down blocks that meet Category 5 require- ments. - Page 8 Figure 2-2 LFH4-M Front Panel LFH4-M PARTITION LINK/ACT PORT NO. Figure 2-3 LFH8-M Front Panel LFH4-M PARTITION LINK/ACT PORT NO. The LFH Mini Fast Ethernet Hubs were designed for easy Òplug and playÓ installation. Before you connect the LFH to other devices, there are several issues you should keep in mind: When connecting the LFH to a workstation using unshielded twisted pair cable, you must make sure that the cable length is not...
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Page 9: Mounting
2.4 Mounting Your LFH4-M or LFH8-M hub is delivered with a mounting bracket. The LFH hub can be mounted to the wall or to the surface of a counter- top by using the bracket and hanging the LFH hub on the wall using the keyholes provided on the bottom of the hub. -
Page 10: Connecting Lfh Hub
2.5 Connecting the LFH Hub Use the following procedures to connect 100BASE-TX network devices to the hub: LFH4-M Ports 1-4 Uplink Port LFH8-M Ports 1-8 PC, Workstation Server Hub, Switch port Hub, Switch uplink port S = Straight Cable C = Crossover cable NOTE: If the Uplink Port is being utilized on the LFH hub, the adja- cent Port may not be used. -
Page 11: Chapter 3 Led Indicators
Chapter 3 LED Indicators Figure 3-1 and Figure 3-2 show the LED indicators which indicate the link status of each of the ports, whether the LFH hub is receiving power, and the presence of network activity and collisions on the network. -
Page 12: Power Led
3.1 Power LED The green LED on the front panel labeled PWR is used to indicate that the LFH hub is receiving power and is turned on. If the LED is off, check the following to isolate the problem: Make sure the power cord is properly connected to the power outlet and is properly inserted into the power connection on the LFH hub Determine whether or not the outlet is functional by plugging another device into the receptacle... -
Page 13: Link/Activity Leds
3.3 Link/Activity LEDs The Link/Activity LEDs on the front panel are associated with indi- vidual ports, indicating whether a device is detected on the other end and whether or not the port has been automatically partitioned off. The LFH hub monitors each port on the hub to determine whether or not there is a device on the other end. -
Page 14: Limited Warranty
(www.lantronix.com) or call Lantronix for assistance. Copyright © 1998, Lantronix. All rights reserved. No part of the contents of this guide may be transmitted or reproduced in any form or by any means without the written permission of Lantronix. - Page 15 NOTE: The RJ45 ports are not for telephone use. CAUTION: Not for installation in air ducts, plenums or other environmental air handling spaces. Changes or modifications to this device not explicitly approved by Lantronix will void the userÕs authority to operate this device.
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Page 16: Declaration Of Conformity
Declaration of Conformity (according to ISO/IEC Guide 22 and EN 45014) ManufacturerÕs Name: Lantronix ManufacturerÕs Address: 15353 Barranca Parkway Irvine, CA 92618 USA declares, that the product: Product Name: Mini Fast Hubs Model Number: LFH4-M, LFH8-M conforms to the following standards:... - Page 17 NOTES...
- Page 18 15353 Barranca Parkway, Irvine, CA 92618 949-453-3990 Fax: 949-453-3995 Sales: 800-422-7055 Support: 800-422-7044 PART NO. 900-142 Rev.A...
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