Cabletron Systems Network Card 36 User Manual

FOMIM-32/36/38 FIBER OPTIC  
MEDIA INTERFACE MODULE  
USER’S GUIDE  
 
Notice  
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.  
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables  
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique  
édicté par le ministère des Communications du Canada.  
VCCI NOTICE  
This equipment is in the 1st Class Category (information equipment to be used in commercial and/or  
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference  
by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial  
and/or industrial areas.  
Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be  
caused to radios and TV receivers, etc.  
Read the instructions for correct handling.  
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  
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ii  
FOMIM User’s Guide  
 
Notice  
CABLETRON SOFTWARE PROGRAM LICENSE  
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3.  
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252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505.  
FOMIM User’s Guide  
iii  
 
Notice  
DECLARATION OF CONFORMITY  
Application of Council Directive(s): 89/336/EEC  
73/23/EEC  
Manufacturer’s Name: Cabletron Systems, Inc.  
Manufacturer’s Address: 35 Industrial Way  
PO Box 5005  
Rochester, NH 03867  
European Representative Name: Mr. J. Solari  
European Representative Address: Cabletron Systems Limited  
Nexus House, Newbury Business Park  
London Road, Newbury  
Berkshire RG13 2PZ, England  
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC  
EC Directive 73/23/EEC  
EN 55022  
EN 50082-1  
EN 60950  
Equipment Type/Environment: Networking Equipment, for use in a  
Commercial or Light Industrial  
Environment.  
We the undersigned, hereby declare that the equipment packaged with this notice conforms to  
the above directives.  
Manufacturer  
Legal Representative in Europe  
Mr. Richard Michaud  
Mr. J. Solari  
___________________________________  
___________________________________  
Full Name  
Full Name  
Manager of Engineering Services  
Managing Director - E.M.E.A.  
___________________________________  
___________________________________  
Title  
Title  
Rochester, NH, USA  
Newbury, Berkshire, England  
___________________________________  
___________________________________  
Location  
Location  
iv  
FOMIM User’s Guide  
 
CONTENTS  
CHAPTER 1  
INTRODUCTION  
1.1 Using This Manual....................................................................... 1-1  
1.2 Document Conventions ............................................................... 1-3  
1.3 Fiber Optic Media Interface Modules........................................... 1-3  
1.3.1 Distance and Cable Type ............................................... 1-3  
1.3.2 Multi Media Access Centers ........................................... 1-4  
1.4 LANVIEW Status Monitoring System .......................................... 1-4  
1.5 Related Manuals.......................................................................... 1-6  
1.6 Getting Help................................................................................. 1-6  
CHAPTER 2  
NETWORK REQUIREMENTS AND INSTALLATION  
2.1 Network Cable Requirements...................................................... 2-1  
2.1.1 Fiber Optic Network Design Guidelines.......................... 2-1  
2.2 Unpacking the FOMIM................................................................. 2-2  
2.3 Installing the FOMIM into the MMAC........................................... 2-3  
2.4 Connecting Fiber Optic Cabling to the FOMIM............................ 2-4  
CHAPTER 3  
TESTING AND TROUBLESHOOTING  
3.1 Installation Test ........................................................................... 3-1  
3.1.1 Testing the Fiber Optic Link Segment ............................ 3-1  
3.1.2 Link Test ......................................................................... 3-2  
3.2 Pre-Installation Test..................................................................... 3-3  
3.3 Using LANVIEW .......................................................................... 3-4  
APPENDIX A  
INDEX  
FOMIM SPECIFICATIONS  
FOMIM User’s Guide  
v
 
Contents  
vi  
FOMIM User’s Guide  
 
CHAPTER 1  
INTRODUCTION  
Welcome to the Cabletron Systems FOMIM-32/36/38 Fiber Optic  
Media Interface Module User’s Guide. We have designed this manual  
to serve as a simple installation and reference guide for the FOMIM, and  
to explain the capabilities and special features of the module. Before  
using the FOMIM, you need to carefully read through this manual to gain  
a full understanding of the FOMIM and its capabilities.  
Cabletron Systems offers three versions of 1300 nm single mode Fiber  
Optic Media Interface Modules:  
FOMIM-32 providing 12 links with ST type connectors  
FOMIM-36 providing 6 links with ST type connectors  
FOMIM-38 providing 18 links with ST type connectors  
1.1  
USING THIS MANUAL  
Chapter 1, Introduction, discusses the capabilities and special features of  
the Cabletron Systems FOMIMs (Figure 1-1). This chapter also includes  
a list of related manuals.  
Chapter 2, Network Requirements and Installation, contains a list of  
network requirements that must be met before you install the FOMIM and  
instructions for installing the FOMIM into the MMAC chassis.  
Chapter 3, Testing and Troubleshooting, provides procedures for testing  
and troubleshooting the installation of the FOMIM. Instructions for using  
LANVIEW, Cabletron Systems built-in visual diagnostic and status  
monitoring system, are also included.  
Appendix A, FOMIM Specifications, contains operational specifications  
and environmental requirements for the FOMIM.  
FOMIM User’s Guide  
1-1  
 
Chapter 1: Introduction  
Figure 1-1 The FOMIMs  
It is assumed that you have a general working knowledge of Ethernet or  
IEEE 802.3 type data communications networks and their physical layer  
components.  
1-2  
FOMIM User’s Guide  
 
 
Document Conventions  
1.2  
DOCUMENT CONVENTIONS  
The following conventions are used throughout this document:  
Note symbol. Calls the reader’s attention to any item of  
information that may be of special importance.  
NOTE  
Caution symbol. Contains information essential to avoid  
damage to the equipment.  
!
CAUTION  
Warning symbol. Warns against an action that could result in  
equipment damage, personal injury or death.  
1.3  
FIBER OPTIC MEDIA INTERFACE MODULES  
Cabletron Systems Fiber Optic Media Interface Modules provide a choice  
of six, twelve, or eighteen ports with ST connectors.  
The FOMIM-32/36/38 use 1300 nm wavelength transmitters  
and receivers (not the 850 nm specified by FOIRL) and should  
NOTE  
be used only with the Cabletron Systems Ethernet single mode  
transceiver, the FOT-F3.  
1.3.1  
Distance and Cable Type  
The FOMIMs support single mode fiber optic cable for sizes such as  
8.3/125 µm, 8.7/125 µm, 9/125 µm, 10/125 µm, and 12/125 µm. The  
cable distance is dependent on the cable type and the overall system fiber  
optic budget. If the system budgets and timing constraints are met, then a  
distance of up to 5 kilometers is possible. You can also use 62.5/125 µm  
multimode cable with the FOMIM, but due to greater optical loss, signal  
distance is reduced to 2 km.  
FOMIM User’s Guide  
1-3  
 
Chapter 1: Introduction  
1.3.2  
Multi Media Access Centers  
The Cabletron Systems Fiber Optic Media Interface Modules are  
designed to be installed into the Cabletron Systems Multi Media Access  
Center (MMAC). The modular design of the MMAC allows the FOMIM  
to co-exist with other Media Interface Modules (MIMs) to provide a  
variety of different media connections on any one point.  
Each packet entering the FOMIM is repeated by the repeater module in  
the MMAC. Each packet that enters the repeater module is regenerated  
and retimed, which assures data integrity and maximum data path  
distance. In addition, the repeater feature ensures fault isolation, because  
the repeater module automatically segments problem ports from the  
network. A segmented port automatically reconnects to the network once  
the port receives a good packet.  
The repeater module also allows you to access the network management  
capabilities that enable you to control the FOMIM and its attached  
segments. For example, information on the number of good packets and  
collisions that have passed through the FOMIM and each port on the  
MIM can be gathered. For more information on managing the FOMIM,  
refer to your specific management module Local Management Guide.  
1.4  
LANVIEW STATUS MONITORING SYSTEM  
The FOMIM uses Cabletron Systems built-in visual diagnostic and status  
monitoring system, LANVIEW. Using LANVIEW, network  
troubleshooting personnel can quickly scan the LANVIEW LEDs to  
observe network status, diagnose network problems, and determine which  
node or segment is faulty (see Figure 1-2).  
1-4  
FOMIM User’s Guide  
 
LANVIEW Status Monitoring System  
LANVIEW LEDs  
Figure 1-2 LANVIEW LEDs  
The following discusses the function of each LANVIEW LED on the  
FOMIM (Figure 1-2). Note that there is one Link OK (LNK) and one  
Receive (RCV) LED for each port on the MIM, as well as one Error  
(ERR) and one Collision (CLN) LED for the entire MIM.  
Link OK (LNK) LED  
When lit, this green LED indicates that a link has been established  
between the receive circuitry of the FOMIM and the transmit circuitry of  
the fiber optic device at the other end of the link segment. This LED  
remains lit as long as the link is maintained.  
Receive (RCV) LED  
When lit, this yellow LED indicates that a data packet is being received  
on that port. The flash of the LED is pulse stretched for viewing effect.  
Collision (CLN) LED  
When lit, this red LED indicates that a collision is occurring on one of the  
fiber segments attached to a fiber optic port on the FOMIM. The flash of  
the LED is pulse stretched for viewing effect.  
FOMIM User’s Guide  
1-5  
 
 
Chapter 1: Introduction  
Error (ERR) LED  
When lit, this red LED indicates the temperature within the MMAC  
chassis has risen to 40°C or greater. The FOMIM alerts the management  
board, and the FOMIM in turn receives a signal to light the LED.  
1.5  
RELATED MANUALS  
The manuals listed below should be used to supplement the procedures  
and other technical data provided in this manual. The procedures  
contained in these manuals will be referenced, rather than repeated, in this  
manual.  
Cabletron Systems Multi Media Access Center (MMAC-M3FNB,  
MMAC-M5FNB, and MMAC-M8FNB) Overview and Set Up Guides.  
Cabletron Systems FOT-F3 Fiber Optic Transceiver User's Manual.  
1.6  
GETTING HELP  
If you need additional support related to this device, or if you have any  
questions, comments, or suggestions concerning this manual, contact  
Cabletron Systems Technical Support:  
By phone  
(603) 332-9400  
Monday – Friday; 8 A.M. – 8 P.M. Eastern Time  
GO CTRON from any ! prompt  
ctron.com (134.141.197.25)  
anonymous  
By CompuServe  
By Internet mail  
By FTP  
Login  
Password  
your email address  
Before calling Cabletron Systems Technical Support, have the following  
information ready:  
A description of the failure  
A description of any action(s) already taken to resolve the problem  
(e.g., changing mode switches, rebooting the unit, etc.)  
A description of your network environment (layout, cable type, etc.)  
Network load and frame size at the time of trouble (if known)  
1-6  
FOMIM User’s Guide  
 
Getting Help  
The serial and revision numbers of all Cabletron Systems products in  
the network  
The device history (i.e., have you returned the device before, is this a  
recurring problem, etc.)  
Any previous Return Material Authorization (RMA) numbers  
FOMIM User’s Guide  
1-7  
 
Chapter 1: Introduction  
1-8  
FOMIM User’s Guide  
 
CHAPTER 2  
NETWORK REQUIREMENTS AND  
INSTALLATION  
This chapter begins with network design guidelines in Section 2.1,  
Network Cable Requirements, that must be met before installing the  
module in a network. It then provides instructions for installing the  
Cabletron Systems Fiber Optic Media Interface Module into the MMAC  
family of modular hubs.  
2.1  
NETWORK CABLE REQUIREMENTS  
When connecting fiber optic segments to the FOMIM, you must follow  
the network guidelines listed below. Failure to do so may result in  
unsatisfactory network performance.  
2.1.1  
Fiber Optic Network Design Guidelines  
The fiber optic link segment should consist of 8/125 – 12/125 µm  
single mode fiber optic cabling. You can also use 62.5/125 µm  
multimode cable with the FOMIM. However, optical loss will be  
greater with multimode cable and distances will be limited to 2 km.  
The fiber optic cable must be tested with a fiber optic attenuation test  
set that is adjusted for a 1300 nm wave length. This test verifies that  
the signal loss in a cable is within an acceptable level of 9.0 dB or less  
for any given single mode fiber optic link.  
When determining the maximum fiber optic cable length, the fiber  
optic budget (total loss of 9.0 dB or less between stations) and total  
network propagation delay should be calculated and considered before  
fiber runs are incorporated in any network.  
Fiber optic budget is the combination of the optical loss due to the  
fiber optic cable, in-line splices, and fiber optic connectors (the loss  
for each splice and connector is typically 1 dB or less).  
FOMIM User’s Guide  
2-1  
 
 
Chapter 2: Network Requirements and Installation  
Propagation delay is the amount of time it takes a packet to travel from  
the sending device to the receiving device. Total propagation delay  
allowed for the entire network is 25.6 µs. If the total propagation delay  
between any two nodes on the network exceeds 25.6 µs, then bridges  
should be used.  
When using single mode fiber optic cable, segment lengths up to 5 km  
are possible if system budgets are met.  
2.2  
UNPACKING THE FOMIM  
Unpack the module as follows:  
The module is very sensitive to static discharge. Observe all  
electrostatic precautions while handling the FOMIM.  
!
CAUTION  
1. Remove the shipping material covering the FOMIM in the shipping  
box.  
2. Verify the contents of the shipping box. The box, as packed should  
contain one FOMIM, one grounding strap, and one user’s guide.  
3. Carefully remove the FOMIM from the shipping box. Leave the  
module in its conductive bag until you are ready to install it. Save the  
shipping box and materials in the event the unit has to be reshipped.  
4. Visually inspect the module within the nonconductive bag. If you see  
any damage, contact Cabletron Systems Technical Support  
immediately.  
2-2  
FOMIM User’s Guide  
 
Installing the FOMIM into the MMAC  
2.3  
INSTALLING THE FOMIM INTO THE MMAC  
You can easily install the FOMIM into a Multi Media Access Center with  
a Flexible Network Bus (MMAC-FNB). Install the FOMIM into the  
MMAC as follows:  
1. Power down the MMAC hub.  
2. Remove any chassis safety bars present on the front of the MMAC  
hub.  
3. Slide the FOMIM (Figure 2-1) into the card cage of the MMAC hub.  
Be sure that the card is properly aligned in the top and bottom slots of  
the card cage.  
Slot 1 of the MMAC hub is reserved for a management module  
(e.g., IRM3) only.  
NOTE  
4. Firmly press the module connections into the backplane. Do not force  
the module into place or use the knurled knobs to draw the module into  
place.  
5. Screw in the knurled knobs to secure the module to the MMAC.  
6. Reinstall any chassis safety bars that were present on the MMAC.  
FOMIM  
MMAC-8FNB  
Figure 2-1 Installing the FOMIM  
FOMIM User’s Guide  
2-3  
 
 
Chapter 2: Network Requirements and Installation  
2.4  
CONNECTING FIBER OPTIC CABLING TO THE  
FOMIM  
Each fiber optic link consists of two strands of fiber optic cabling: the  
transmit (TX) and the receive (RX). The transmit strand from a module  
port connects to the receive port of a fiber optic Ethernet device at the  
other end of the segment. The receive strand of the applicable port on the  
module connects to the transmit port of the fiber optic Ethernet device.  
Cabletron Systems recommends labeling fiber optic cables to indicate  
receive and transmit ends. Many cables are prelabeled, providing  
matching labels or tapes at both ends of each strand of cable.  
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.  
Do not touch the ends of the fiber optic strands, and do not let  
the ends come in contact with dust, dirt, or other contaminants.  
Contamination of the ends can cause problems in data  
transmissions. If the ends become contaminated, clean them  
with denatured alcohol using a soft, clean, lint free cloth.  
!
CAUTION  
2. Attach one fiber to the applicable receive port on the module. Insert  
the ST connector into the port with the alignment slot on the connector  
clockwise to lock it down.  
Figure 2-2 ST Connector Insertion  
3. Attach the other fiber of the pair to the applicable transmit port on the  
module. Use the same procedure for insertion of the ST connector.  
2-4  
FOMIM User’s Guide  
 
Connecting Fiber Optic Cabling to the FOMIM  
4. At the other end of the fiber optic cable, attach the fiber pair to the  
transmit and receive ports of the device.  
If link indicators are present for the fiber optic connection, check that they  
are ON. If an indicator is present but not ON, that port does not have a  
valid link. Perform each of the following steps until you reach a resolution  
of the problem and achieve a link.  
Check that the device at the other end of the link is ON.  
Verify proper cross-over of the fiber strands. Try swapping the transmit  
and receive connections at only one end of the link.  
Verify that the fiber connection meets the dB loss specifications  
outlined in Appendix A, FOMIM Specifications.  
If you are still unable to establish a link, attempt to make the connection  
between the devices with another fiber optic cable. If this is unsuccessful,  
contact Cabletron Systems Technical Support.  
FOMIM User’s Guide  
2-5  
 
Chapter 2: Network Requirements and Installation  
2-6  
FOMIM User’s Guide  
 
CHAPTER 3  
TESTING AND TROUBLESHOOTING  
This chapter lists the installation checkout procedures necessary to verify  
that the segments connected to your FOMIM are operating properly. The  
chapter concludes with a description of the LANVIEW LEDs and their  
use in troubleshooting physical layer network problems.  
3.1  
INSTALLATION TEST  
This section contains procedures to test the following:  
The fiber optic link segment to be attached to the FOMIM  
The link between the FOMIM and the device attached to the other end  
of the fiber optic link segment  
The FOMIM itself  
3.1.1  
Testing the Fiber Optic Link Segment  
Test the segment being attached to the FOMIM to verify that the cable  
meets the fiber budget specifications discussed in Appendix A. Using a  
fiber optic power meter set, test the link segment as follows:  
Do not touch the ends of the fiber optic strands, and do not let  
the ends come in contact with dust, dirt, or other contaminants.  
Contamination of the ends can cause problems in data  
transmissions. If the ends become contaminated, clean them  
with denatured alcohol using a soft, clean, lint free cloth.  
!
CAUTION  
1. Attach a fiber optic jumper to the optical power meter. The meter  
should be set at 1300 nm.  
2. Attach a fiber optic jumper to the optical source unit. If the source unit  
has multiple settings, it should be set at 1300 nm.  
3. Using a barrel connector, connect the jumpers together.  
4. Following the instructions for the test set, test the jumpers to get a  
reference level. Make a note of this reading.  
FOMIM User’s Guide  
3-1  
 
Chapter 3: Testing and Troubleshooting  
5. Disconnect the jumpers from the barrel connector.  
6. Using the jumper, attach the optical power meter to one end of one  
strand of the link segment.  
7. Using the other jumper, attach the other end of the same strand to the  
optical source unit.  
8. Note the reading on the optical power meter. This is your test level.  
9. Subtract the reference level found in Step 4 from the test level to find  
your dB loss for the fiber optic link segment, i.e.,  
dB loss = Test Level - Reference Level.  
10. Verify that the reading on the receive unit falls within the range  
indicated by the Receive Sensitivity and Maximum Receive Input  
Power specifications listed in the Fiber Optic Interface section of  
Appendix A.  
11. Repeat Steps 6 through 10 for the other strand in the link segment.  
If the fiber optic link segment does not meet the specifications, it may be  
contaminated with dust, dirt, or other contaminants. Try cleaning the  
connection at each end of the cable with denatured alcohol, using a soft,  
clean, lint free cloth, then repeat the test.  
If this does not work, contact Cabletron Systems technical support.  
3.1.2  
Link Test  
To verify the physical link between your devices, check the LNK LEDs  
on your FOMIM and receiving device for the applicable port. If the LEDs  
are lit, the proper connection has been made.  
If the LEDs are not lit, perform the following procedure, using a  
Cabletron Systems FOT-F3 Fiber Optic Transceiver at the other end of the  
cable.  
1. Check that power is being supplied to both the FOMIM in the MMAC  
chassis and the device at the other end of the link.  
2. Reverse the fiber optic cable ends at either the applicable port on the  
module or at the device.  
3. Check if the LEDs are lit.  
3-2  
FOMIM User’s Guide  
 
Pre-Installation Test  
4. If the LEDs are not lit, reverse the cable ends back to their original  
positions, and contact Cabletron Systems Technical Support for  
assistance.  
3.2 PRE-INSTALLATION TEST  
Before installing the FOMIM in a live network, test the module in a  
controlled situation to ensure that it is repeating packets. With the  
FOMIM installed in an MMAC hub with a Repeater module (e.g., IRM3),  
this test can be performed with two workstations (Figure 3-1) by  
completing the following steps:  
1. Install the FOMIM into an MMAC chassis with an IRM3.  
The IRM3 must be installed in slot one of the MMAC chassis.  
NOTE  
2. Connect the first workstation to the IRM3 using either the AUI port,  
(with a transceiver and an AUI cable), or to the fiber optic port, (with  
fiber optic cable), depending on which is the active repeater port.  
The AUI port is the default active repeater port on the IRM3. If  
you want to test the module using the fiber port, it must be  
NOTE  
selected through Local Management. Refer to the Local  
Management section of the IRM3 User’s Guide for more  
information on selecting the active repeater port.  
3. Connect the second workstation to the FOMIM, using the appropriate  
transceivers and cable.  
4. Set the first workstation as the file server and the second as the client  
(refer to the workstation documentation for setting up the workstations  
as file server and client). When the workstations are properly set up,  
proceed to send packets between the workstations and verify that the  
FOMIM is operating properly.  
FOMIM User’s Guide  
3-3  
 
Chapter 3: Testing and Troubleshooting  
A “ping” test will verify that the module is operating properly.  
NOTE  
However, both server and client workstations must have their  
own unique IP Addresses.  
If failures occur, refer to Section 3.3, Using LANVIEW, in this chapter.  
MMAC-M3FNB with IRM3  
File Server Workstation  
0494109  
Client Workstation  
Figure 3-1 Pre-Installation Test  
3.3 USING LANVIEW  
The FOMIM uses Cabletron Systems built-in visual diagnostic and status  
monitoring system called LANVIEW. With LANVIEW, network  
troubleshooting personnel can quickly scan LEDs to observe network  
status, or diagnose network problems. Figure 1-2 in Chapter 1 shows the  
location of the LANVIEW LEDs.  
3-4  
FOMIM User’s Guide  
 
   
Using LANVIEW  
Table 3-1 LANVIEW Troubleshooting  
Error  
Led  
Color  
Description  
Condition/Recommended  
Action  
LNK  
Green  
When on, a link is  
established  
between the  
If off, the link between the port  
and fiber device has been  
broken.  
(Link/  
Fiber  
Port)  
FOMIM Fiber port  
and the fiber device Check the connectors at each  
at the other end of end of the segment to ensure  
the segment. LED is that they are free of dust. Clean  
on as long as the  
link is maintained.  
the connectors if necessary.  
Reconnect the segment and  
check the Link LED again.  
RCV  
(Receive)  
Yellow  
Red  
When flashing the  
FOMIM is receiving receiving packets.  
data packets from  
segmentsconnected Check that the module is firmly  
to the associated  
port.  
If off, the FOMIM is not  
installed in the MMAC.  
CLN  
(Collision  
Present)  
When flashing, a  
collision is being  
detected on one or  
more segments  
connected to the  
MMAC. Note that  
periodic flashing is  
normal.  
Excessive flashing or on solid  
indicates excessive collisions.  
ERR  
(Error)  
Red  
Remains lit when the  
temperature within  
the MMAC chassis  
rises above 40°C.  
If you are not able to resolve a problem with your FOMIM, call Cabletron  
Systems Technical Support for assistance (see Chapter 1, Section 1.6,  
Getting Help).  
FOMIM User’s Guide  
3-5  
 
Chapter 3: Testing and Troubleshooting  
3-6  
FOMIM User’s Guide  
 
APPENDIX A  
FOMIM SPECIFICATIONS  
The operating specifications for the Cabletron Systems FOMIM are  
included in this Appendix. Cabletron Systems reserves the right to change  
these specifications at any time without notice.  
A.1 OPERATING SPECIFICATIONS  
Table A-1 Fiber Optic Interface (All Ports)  
Transceiver  
Built-In Cabletron Systems FOT-F3  
Parameter  
Typical  
Minimum  
Maximum  
Receive Sensitivity  
-31.0 dBm  
-36.0 dBm  
-30.0 dBm  
Max. Receive Input  
Power  
-14.0 dBm  
-15.0 dBm  
Transmitter Power at  
25°C Into 8.3/125 µm  
fiber:  
-18.0 dBm  
-21.0 dBm  
Output Power  
Coefficient  
-0.07 dB/°C  
Transmitter Power decreases as temperatures rise and  
increases as temperatures fall. Use the Output Power  
Coefficient to calculate increased or decreased power output  
for your operating environment. For example, the typical power  
output at 25° C is -16.4 dBm. For a 4° C temperature increase,  
multiply the typical coefficient (-0.07 dB) by four and add the  
result to the typical output power (4°C x -0.07 dB/°C) +  
(-16.4dBm) = -16.7).  
NOTE  
FOMIM User’s Guide  
A-1  
 
Appendix A: FOMIM Specifications  
Table A-2 Fiber Optic Interface (All Ports)  
Parameter  
Typical  
Minimum  
Maximum  
Transmitter  
Peak Wave  
Length  
1310 nm  
1265 nm  
1380 nm  
Spectral Width  
Rise Time  
95 nm  
125 nm  
5.0 ns  
5.0 ns  
50.7%  
3.0 ns  
2.7 ns  
2.2 ns  
49.6%  
Fall Time  
2.5 ns  
Duty Cycle  
Bit Error Rate  
50.1%  
Better than 10-10  
The transmitter power levels given above are Peak Power  
Levels after optical overshoot.You must use a Peak Power  
Meter to correctly compare the values given above to those  
measured on any particular port.  
NOTES  
If you are measuring power levels with an Average Power  
Meter, add 3 dBm to the average power measurement to  
compare the measured average power values to the values  
listed above (i.e., -33.5 dBm average + 3 dB = -30.5 dBm peak).  
A.2 ENVIRONMENTAL REQUIREMENTS  
Operating Temperature:  
Non-operating Temperature:  
Operating Humidity:  
+5° to +40°C (41° to 104°F)  
-30° to +80°C (-22° to 176°F)  
5% to 95% (non-condensing)  
A-2  
FOMIM User’s Guide  
 
Agency Approvals  
A.3 AGENCY APPROVALS  
Designed in accordance with UL478, UL910, NEC 725-2(b), CSA, IEC,  
TUV, VDE Class A. Meets FCC Part 15, Class A limits.  
It is the responsibility of the person who sells the system of  
which the FOMIM will be a part to ensure that the total system  
meets allowed limits of conducted and radiated emissions.  
PHYSICAL PROPERTIES  
Dimensions:  
34.04 D x 29.21 H x 5.08 W cm  
(13.4 D x 11.5 H x 2.0 W in)  
Weight:  
FOMIM-36: 0.57 kg (1.25 lb)  
FOMIM-32: 0.86 kg (1.90 lb)  
FOMIM-38: 1.13 kg (2.50 lb)  
FOMIM User’s Guide  
A-3  
 
Appendix A: FOMIM Specifications  
A-4  
FOMIM User’s Guide  
 
INDEX  
C
Cable  
S
ST connectors 2-5  
connecting 2-4  
distance 1-3  
requirements 2-1  
CLN LED 1-5  
Conventions 1-3  
T
Testing  
pre-installation 3-3, 3-4  
U
D
Using LANVIEW 3-4  
Design guidelines 2-1  
E
ERR LED 1-5  
F
FOMIM  
installing 2-3  
specifications A-1  
unpacking 2-2  
H
Help 1-6  
L
LANVIEW  
location 1-4  
troubleshooting 3-5  
Link  
testing 3-1  
LNK LED 1-5  
M
MMAC  
description 1-3  
R
RCV LED 1-5  
Related manuals 1-5  
FOMIM User’s Guide  
Index-1  
 
Index  
Index-2  
FOMIM User’s Guide  
 

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