Cabletron Systems TRFOT-2 User manual

Brand: Cabletron Systems

Model: TRFOT-2

Category: Network media converters

Type: User manual

Cabletron Systems TRFOT-2 is a Token Ring Multimode Fiber Optic Transceiver Lobe Cable Converter that allows station devices to be attached to a Medium Attachment Unit (MAU) or concentrator. The TRFOT-2 converts copper lobes to fiber and/or fiber lobes back to copper. An external plug-in power supply provides power for the TRFOT-2.

The TRFOT-2 complies with 802.5J Fiber Optic Token Ring standard (draft 23) over multimode fiber cable and meets FCC Class A, UL and VDE requirements for emissions.

TRFOT-2

TOKEN RING MULTIMODE

FIBER OPTIC TRANSCEIVER

LOBE CABLE CONVERTER

USER’S GUIDE

CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505

NOTICE

Cabletron Systems reserves the right to make changes in specifications and other

information contained in this document without prior notice. The reader should in all

cases consult Cabletron Systems to determine whether any such changes have been

made. The hardware, firmware, or software described in this manual is subject to change

without notice.

IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,

INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER

(INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR

RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN

IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE

KNOWN, THE POSSIBILITY OF SUCH DAMAGES.

Cabletron Systems, Inc.

35 Industrial Way, P.O. Box 5005

Rochester, NH 03867-0505

Printed in the United States of America

Order Number: 9030752-01 March, 1994

TRFOT-2,

TRFMIM-22/26/28, TRMF-2, TRRMIM-A/2A/4A

are trademarks of

Cabletron Systems, Inc.

LANVIEW

is a registered trademark of Cabletron Systems, Inc.

CompuServe

is a registered trademark of CompuServe

Velcro

is a registered trademark of Velcro Industries, BV

Printed On

Recycled Pa

per

NOTICE

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following

two conditions: (1) this device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.

NOTE:

This equipment has been tested and found to comply with the limits for a Class

A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to

provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment uses, generates, and can radiate

radio frequency energy and if not installed in accordance with the operator’s manual,

may cause harmful interference to radio communications. Operation of this equipment

in a residential area is likely to cause interference in which case the user will be required

to correct the interference at his own expense.

WARNING:

Changes or modifications made to this device which are not expressly

approved by the party responsible for compliance could void the user’s authority to

operate the equipment.

DOC NOTICE

This digital apparatus does not exceed the Class A limits for radio noise emissions from

digital apparatus set out in the Radio Interference Regulations of the Canadian

Department of Communications.

CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT

IMPORTANT: Before utilizing this product, carefully read this License Agreement.

This document is an agreement between you, the end user, and Cabletron Systems, Inc.

(“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron

software program (the “Program”) contained in this package. The Program may be

contained in firmware, chips or other media. BY UTILIZING THE ENCLOSED

PRODUCT, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF THIS

AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF

WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT AGREE TO THE

TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT TO

THE PLACE OF PURCHASE FOR A FULL REFUND.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE. You have the right to use only the one (1) copy of the Program provided

in this package subject to the terms and conditions of this License Agreement.

You may not copy, reproduce or transmit any part of the Program except as

permitted by the Copyright Act of the United States or as authorized in writing by

Cabletron.

2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or

disassemble the Program.

3. APPLICABLE LAW. This License Agreement shall be interpreted and governed

under the laws and in the state and federal courts of New Hampshire. You accept

the personal jurisdiction and venue of the New Hampshire courts.

NOTICE

iii

EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY

1. EXCLUSION OF WARRANTY. Except as may be specifically provided by

Cabletron in writing, Cabletron makes no warranty, expressed or implied,

concerning the Program (including Its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE

SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF

MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH

RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS,

AND ANY ACCOMPANYING HARDWARE.

2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL

CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES

WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS

OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS

INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE

DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO

USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME

STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY

FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION

OR LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE

ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

UNITED STATES GOVERNMENT RESTRICTED RIGHTS

The enclosed product (a) was developed solely at private expense; (b) contains “restricted

computer software” submitted with restricted rights in accordance with Section 52227-

19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and

its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its

suppliers.

For Department of Defense units, the product is licensed with “Restricted Rights” as

defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227-

7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is

subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical

Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35

Industrial Way. Rochester, New Hampshire 03867

CONTENTS

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL............................................................1-1

1.2 TRFOT-2 OVERVIEW...............................................................1-1

1.3 TRFOT-2 FEATURES ...............................................................1-2

1.4 RECOMMENDED READING...................................................1-2

1.5 GETTING HELP........................................................................1-2

CHAPTER 2 INSTALLATION

REQUIREMENTS/SPECIFICATIONS

2.1 FIBER OPTIC CABLE SPECIFICATIONS.............................2-1

2.2 COPPER CABLE SPECIFICATIONS......................................2-2

2.3 OPERATING SPECIFICATIONS.............................................2-3

CHAPTER 3 INSTALLING THE TRFOT-2

3.1 UNPACKING THE TRFOT-2 ...................................................3-1

3.2 SETTING THE CONFIGURATION SWITCHES....................3-1

3.3 ATTACHING THE TOKEN RING CABLE TO A

CONCENTRATOR.....................................................................3-3

3.4 ATTACHING FIBER OPTIC CABLES ....................................3-3

3.5 CONNECTING POWER............................................................3-5

3.6 MOUNTING THE TRFOT-2.....................................................3-6

3.7 USING LANVIEW LEDS..........................................................3-7

INTRODUCTION

Page 1-1

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

TRFOT-2 Token Ring

Multimode Fiber Optic Transceiver Lobe Cable Converter

User’s Guide

. This manual explains installation instructions and

provides reference information for the TRFOT-2.

1.1 USING THIS MANUAL

Read through this manual to gain a full understanding of the features

of the TRFOT-2. You should have a general working knowledge of

token ring (IEEE 802.5J) networks and their physical layer

components before installing the TRFOT-2.

Chapter 1,

Introduction

, describes the features and capabilities of

the Cabletron Systems TRFOT-2.

Chapter 2,

Installation Requirements/Speciﬁcations

, describes

cabling requirements, network guidelines, and operating

speciﬁcations for the TRFOT-2.

Chapter 3,

Installing the TRFOT-2

, contains instructions for

installing the TRFOT-2 to your network. This chapter also describes

the front panel LANVIEW

LEDs and conﬁguration switches.

1.2 TRFOT-2 OVERVIEW

The TRFOT-2, Token Ring Multimode Fiber Optic Transceiver is a

ﬁber optic lobe cable converter that allows station devices to be

attached to a Medium Attachment Unit (MAU) or concentrator. This

device converts copper lobes to ﬁber and/or ﬁber lobes back to copper.

You can use the TRFOT-2 with Cabletron Systems’ TRFMIM-22/26/28

Multimode Fiber Media Interface Modules or conﬁgure the TRFOT-2

for Ring In/Ring Out (RI/RO) applications. An external plug-in power

supply provides power for the TRFOT-2. The TRFOT-2 complies with

802.5J Fiber Optic Token Ring standard (draft 23) over multimode

ﬁber cable and meets FCC Class A, UL and VDE requirements for

emissions.

INTRODUCTION

Page 1-2

1.3 TRFOT-2 FEATURES

LANVIEW LEDs

Cabletron Systems’ LANVIEW Status Monitoring and Diagnostics

System is a convenient troubleshooting tool that helps you diagnose

physical layer problems. The front panel LANVIEW LEDs alert you to

power failures, cable faults, and link problems.

Connectivity

The TRFOT-2 is equipped with multimode ST connectors for ﬁber

links and a DB9 connector for copper links. The TRFOT-2 supports

cable distances of up to 2 km over multimode ﬁber optic cable. You can

attach the TRFOT-2 at either end of a ﬁber link.

Ring Speed Compatibility

The TRFOT-2 supports both 4 and 16 mb/sec ring speeds and senses

the ring speed automatically.

1.4 RECOMMENDED READING

We recommend the following publications for more information on

implementing a token ring network.

Local Area Networks, Token Ring Access Method, IEEE

Standard 802.5

LAN Troubleshooting Handbook

, Mark Miller (1989, M&T

Publishing, Inc.)

1.5 GETTING HELP

If you need additional support related to the Cabletron Systems

TRFOT-2, or if you have any questions, comments, or suggestions

concerning this manual, contact Cabletron Systems Technical

Support:

By phone......................... (603) 332-9400

Monday-Friday; 8am - 8pm EST

By CompuServe

............ GO CTRON from any ! prompt

By Internet mail............. [email protected]

INSTALLATION REQUIREMENTS/SPECIFICATIONS

Page 2-1

CHAPTER 2

INSTALLATION

REQUIREMENTS/SPECIFICATIONS

This chapter describes cabling requirements, network guidelines, and

operating speciﬁcations for the TRFOT-2. Ensure that you read this

chapter before you install the TRFOT-2. Failure to follow these

guidelines could result in unsatisfactory network performance.

2.1 FIBER OPTIC CABLE SPECIFICATIONS

Multimode ﬁber optic link segments must meet the following

requirements:

Cable Type

The TRFOT-2 requires the following multimode ﬁber optic media:

• 50/125

m ﬁber optic cabling.

• 62.5/125

m ﬁber optic cabling.

• 100/140

m ﬁber optic cabling.

Attenuation

The ﬁber optic cable must be tested with a ﬁber optic attenuation test

set that is adjusted for an 850 nm wave-length. This test veriﬁes that

the signal loss in a cable is within an acceptable level:

• 13.0 dB or less for 50/125

m ﬁber cable segment.

• 16.0 dB or less for 62.5/125

m ﬁber cable segment.

• 19.0 dB or less for 100/140

m ﬁber cable segment.

Fiber Optic Budget

Fiber optic budget is the combination of the optical loss due to the

ﬁber optic cable, in-line splices, and ﬁber optic connectors. When

determining the maximum ﬁber optic cable length, the ﬁber optic

budget should be calculated and considered before ﬁber optic cable

runs are incorporated in any network design.

Fiber Length

The maximum allowable ﬁber optic cable length is 2 km.

INSTALLATION REQUIREMENTS/SPECIFICATIONS

Page 2-2

2.2 COPPER CABLE SPECIFICATIONS

Cabletron includes a DB9 to DB9 Shielded Twisted Pair cable with the

TRFOT-2. Use this cable to connect the TRFOT-2 to the token ring

station adapter card or concentrator. To attach the TRFOT-2 to a token

ring device that does not have a DB9 connector, you need an adapter

cable. Cabletron offers adapter cables for RJ45 or MIC style

connectors. Copper cable must meet the following requirements:

Maximum Cable Length

The maximum allowable length for copper cable is 10 feet.

Connector Pinouts

Table 2-2 provides a cross reference of copper cable connector pinouts.

Media Filters

To connect an Unshielded Twisted Pair (UTP) segment from a token

ring concentrator to the TRFOT-2, you need to install a Type 3 media

ﬁlter such as the Cabletron Systems TRMF-2. Use the TRMF-2 at the

concentrator end of the connection as shown in Figure 2-1.

Figure 2-1. UTP Cable Connections

Table 2-1. Connector Pinout Cross Reference

Signal

Name

DB9 9-pin

D-shell

RJ45 8-pin

Modular

Data Connector

(MIC)

TX+ 9 6 O (Orange)

TX- 5 3 B (Black)

RX+ 1 4 R (Red)

RX- 6 5 G (Green)

DB9 STP Cable

TRFOT-2

Multimode Fiber Cable

TRMF-2 Media Filter

UTP Cable

Concentrator

INSTALLATION REQUIREMENTS/SPECIFICATIONS

Page 2-3

2.3 OPERATING SPECIFICATIONS

This section lists power supply requirements, safety and

environmental guidelines, and physical speciﬁcations for the

TRFOT-2. Cabletron Systems reserves the right to change these

speciﬁcations at any time without notice.

POWER REQUIREMENTS

Input Voltage: 9-12 VDC

Input Current: 500 mA, Maximum

FIBER OPTIC TRANSMIT/RECEIVE SPECIFICATIONS

Minimum Transmit Power: -20 dBm

Maximum Transmit Power: -13 dBm

Minimum Receive Sensitivity: -32 dBm

Maximum Receive Power: -12 dBm

SAFETY AND ENVIRONMENTAL APPROVALS

This device meets FCC Class A, UL and VDE requirements for

emissions.

PHYSICAL

Dimensions: 2.5 H x 5 W x .875 D inches

(6.3 H x 12.7 W x 2.2 D centimeters)

Weight: .40 lbs

INSTALLING THE TRFOT-2

Page 3-1

CHAPTER 3

INSTALLING THE TRFOT-2

This chapter outlines how to install the TRFOT-2 in your network.

Ensure that your network meets all the requirements listed in

Chapter 2,

Installation Requirements/Speciﬁcations

, before

installing and operating the TRFOT-2.

3.1 UNPACKING THE TRFOT-2

Unpack the TRFOT-2 as follows:

1. Carefully remove the TRFOT-2 from the shipping box.

2. Remove the TRFOT-2 from its protective plastic bag.

3. Visually inspect the TRFOT-2. If there are any signs of damage,

contact Cabletron Systems Technical Support immediately.

3.2 SETTING THE CONFIGURATION SWITCHES

Figure 3-1 shows the location of the TRFOT-2’s four configuration

switches. Cabletron sets the switches for Station applications. If you

need to change the switches for other applications, follow steps 1-3.

Figure 3-1. TRFOT-2 Configuration Switches

1. Disconnect the TRFOT-2 from the network and remove the power.

2. Set the switches for the desired application (refer to Table 3-1).

3. Reconnect the TRFOT-2 to the network, then re-apply the power.

A B C D

OFF

INSTALLING THE TRFOT-2

Page 3-2

Table 3-1 provides a quick reference for the switch settings for Station,

Lobe Concentrator/Trunk Coupling Unit (TCU), Ring In (RI), and

Ring Out (RO) applications. A description of each switch is also listed

below.

Switch A

This switch selects Station/RI or Lobe/RO applications for the

TRFOT-2’s copper connector. Select ON to attach the TRFOT-2’s

copper connector to a Station adapter or Ring In port. Select OFF to

connect the copper connector to a Concentrator Lobe port or Ring Out

port.

Switch B

This switch selects RI/RO or Station/Lobe applications for the

TRFOT-2. Select ON for RI/RO applications. Select OFF for

Station/Lobe applications.

Switch C

This switch enables/disables the phantom drive for RI/RO applications

with other Cabletron products. Select ON to disable the phantom

drive. Select OFF to enable the phantom drive.

Switch D

This switch selects modes on the TRFOT-2’s ﬁber optic connector.

Select ON to attach the TRFOT-2’s ﬁber optic connector to a Cabletron

ﬁber RI/RO port, for example the TRRMIM-A/2A/4A. Select OFF to

attach the ﬁber optic connector to an IEEE 802.5J compatible RI/RO

Table 3-1. Switch Settings

Switch Station Lobe

(TCU)

Ring In Ring Out

A On Off On Off

B Off Off On On

C Off Off On - Disables phantom drive.

Off - Enables phantom drive (for

use with Cabletron propri-

etary devices only).

D Off Off On - Cabletron proprietary devices.

Off - 802.5J compatible device.

INSTALLING THE TRFOT-2

Page 3-3

port.

3.3 ATTACHING THE TOKEN RING CABLE TO A

CONCENTRATOR

To attach the TRFOT-2 to a token ring concentrator that supports

Shielded Twisted Pair (STP), use the DB9 to DB9 cable supplied with

the unit. If you want to attach the TRFOT-2 to a concentrator that

does not have a DB9 connector, you need an adapter cable. Cabletron

offers cables that adapt to RJ45 and MIC style connectors. The

maximum supported length for the copper cable is 10 feet.

To attach the TRFOT-2 to a token ring concentrator that supports

Unshielded Twisted Pair (UTP) cable, you need to install a Type 3

media ﬁlter such as the Cabletron Systems TRMF-2. Figure 3-2 shows

how to attach a UTP segment to the TRFOT-2 using the TRMF-2.

Figure 3-2. Attaching a UTP Segment to the TRFOT-2

3.4 ATTACHING FIBER OPTIC CABLES

Note

: You must cross over the fiber optic strands when you connect link

segments to the TRFOT-2 (i.e. TX on one end to RX on the other end). To

facilitate hookup, label the fiber optic strands 1 and 2.

To connect a ﬁber optic link segment to a TRFOT-2:

1. Remove the protective plastic covers from the fiber optic ports on

the applicable port on the module and from the ends of the

connectors on each fiber strand.

TRMF-2

TOKEN RING

MEDIA FILTER

TRFOT-2

802.5 TOKEN RING COPPER

FIBER OPTIC

TRANSCEIVER

WITH

LANVIEW

LNK

POWER REQUIRED: 9-12V ----,500mA MAX

DATA CAPABILITY: 4/16Mb/s AUTO SENSING

POWER

INPUT

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND

(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

A B C D

UTP Segment

INSTALLING THE TRFOT-2

Page 3-4

2. Attach the fiber labeled 1 to the applicable receive port, labeled

on the TRFOT-2. See Figure 3-3.

Figure 3-3. Connecting Fiber Cables

3. Attach the fiber labeled 2 to the applicable transmit port, labeled

, on the TRFOT-2.

4. At the other end of the fiber optic cable, attach the fiber labeled 1

to the transmit port of the device.

5. Attach the fiber optic cable labeled 2 to the receive port of the

device.

6. Check that the

Link LED is on. If the LED is not on, perform

each of the following steps until it is:

Note

: Perform the following steps only if the device attached to the

TRFOT-2 is a Cabletron device, for example the TRFMIM-22/26/28. If

you attach a non-Cabletron device to the TRFOT-2, the

Link LED

may not light, even though a good link may exist.

a. Check that the power is turned on for the device at the other

end of the link.

b. Verify that the fiber strands are properly “crossed-over”

between the applicable port on the module and the fiber optic

device at the other end of the fiber optic link segment.

TRFOT-2

TRFMIM

INSTALLING THE TRFOT-2

Page 3-5

c. Reset the TRFOT-2 by cycling the power.

d. Verify that the fiber connection meets the dB loss specifications

outlined in Fiber Optic Network Requirements.

Note

: If after proper insertion to the ring, one of the fiber cables is

disconnected, the other fiber cable should also be disconnected before

reconnecting. The TX cable must be reconnected first on the station

TRFOT-2, then the RX cable.

3.5 CONNECTING POWER

The TRFOT-2 is equipped with an external power supply. To connect

the power supply to the TRFOT-2, refer to Figure 3-4 and perform the

following steps:

1. Plug the power supply connector into the

Power Input

port on the

TRFOT-2.

2. Plug the power supply into a standard wall outlet.

3. Check that the

PWR

LED is on.

802.5 TOKEN RING COPPER

FIBER OPTIC

TRANSCEIVER

WITH

LANVIEW

LNK

POWER REQUIRED: 9-12V ----,500mA MAX

DATA CAPABILITY: 4/16Mb/s AUTO SENSING

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND

(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

A B C D

POWER

INPUT

TRFOT-2

Wall Outlet

Power Supply

INSTALLING THE TRFOT-2

Page 3-6

Figure 3-4. Attaching the Power Supply

3.6 MOUNTING THE TRFOT-2

To wall-mount the TRFOT-2, use the Cable Mounts, Tie Wraps, and

Velcro Strips included with the unit. Refer to Figure 3-5 and perform

the following steps:

1. Remove the tape from the adhesive backing on the Velcro strips.

2. Place one Velcro half on the TRFOT-2 and the other half on the

mounting surface.

3. Press firmly on each Velcro strip, then press the TRFOT-2 onto the

mounting surface.

4. Secure the TRFOT-2’s cables to the wall using the adhesive backed

cable mounts and tie wraps.

Figure 3-5. Mounting the TRFOT-2

Cable Mounts and Tie Wraps

802.5 TOKEN RING COPPER

FIBER OPTIC

TRANSCEIVER

WITH

LANVIEW

LNK

POWER REQUIRED: 9-12V ----,500mA MAX

DATA CAPABILITY: 4/16Mb/s AUTO SENSING

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND

(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

A B C D

POWER

INPUT

TRFOT-2

INSTALLING THE TRFOT-2

Page 3-7

3.7 USING LANVIEW LEDS

The front panel LEDs help you diagnose power and link problems

associated with the TRFOT-2. Table 3-2 explains each LED.

If the CU LED is red, follow these steps until it changes to green:

1. Verify that the proper adapter card software is loaded on the host

machine.

2. Check the FO LED. If it is not on, check the fiber optic connections

as detailed in Section 3.4.

3. Check the copper cable connecting the TRFOT-2 to the device.

Verify that it is installed correctly, see Section 3.3.

4. Reset the TRFOT-2 by cycling power.

Table 3-2. LANVIEW LEDS

LED LED Color Definition

PWR Green

Off

TRFOT-2 is receiving power.

TRFOT-2 is not receiving power.

CU Green

Flashing Green

Red

Phantom detected/valid copper link.

Phantom detected/valid copper link, no

data present.

Phantom not detected/No Copper link.

FO Green

Red

Fiber optic link is correctly connected to

RX port and signal is present.

Fiber optic link is not connected

correctly or signal is not present.

INSTALLING THE TRFOT-2

Page 3-8

5. Reboot the PC containing the station adapter card and reload the

adapter card software.

Cabletron Systems TRFOT-2 User manual

Brand: Cabletron Systems

Model: TRFOT-2

Category: Network media converters

Type: User manual

The TRFOT-2 complies with 802.5J Fiber Optic Token Ring standard (draft 23) over multimode fiber cable and meets FCC Class A, UL and VDE requirements for emissions.

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