background image

 

Chapter 1: 

 

Introduction

 

1-6

FOMIM User’s Guide

 

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

By CompuServe

GO CTRON from any ! prompt

By Internet mail

[email protected]

By FTP

ctron.com (134.141.197.25)

Login 

 

anonymous

 

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)

Содержание 38

Страница 1: ...FOMIM 32 36 38 FIBER OPTIC MEDIA INTERFACE MODULE USER S GUIDE...

Страница 2: ...Inc All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies FCC NOTICE This device complies with Part 15 of the FCC rules Operation is...

Страница 3: ...g 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 R...

Страница 4: ...N 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 SP...

Страница 5: ...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...

Страница 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...

Страница 7: ...Contents vi FOMIM User s Guide...

Страница 8: ...ith 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...

Страница 9: ...Introduction 1 2 FOMIM User s Guide 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 c...

Страница 10: ...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 m multimode cable with the FOMIM but due to greater optical loss signa...

Страница 11: ...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...

Страница 12: ...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...

Страница 13: ...stems 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 co...

Страница 14: ...1 7 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 Mat...

Страница 15: ...Chapter 1 Introduction 1 8 FOMIM User s Guide...

Страница 16: ...fiber optic cabling You can also use 62 5 125 m 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 mu...

Страница 17: ...OMIM Unpack the module as follows 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 groundi...

Страница 18: ...e 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 4 Firmly press the module connections into the backplan...

Страница 19: ...oth 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 2 Attac...

Страница 20: ...ollowing 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 tr...

Страница 21: ...Chapter 2 Network Requirements and Installation 2 6 FOMIM User s Guide...

Страница 22: ...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 1 Attach a fiber optic jumper to t...

Страница 23: ...hrough 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 connect...

Страница 24: ...AUI cable or to the fiber optic port with fiber optic cable depending on which is the active repeater port 3 Connect the second workstation to the FOMIM using the appropriate transceivers and cable 4...

Страница 25: ...atus 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 loca...

Страница 26: ...evice has been broken Check the connectors at each end of the segment to ensure that they are free of dust Clean the connectors if necessary Reconnect the segment and check the Link LED again RCV Rece...

Страница 27: ...Chapter 3 Testing and Troubleshooting 3 6 FOMIM User s Guide...

Страница 28: ...e Sensitivity 31 0 dBm 36 0 dBm 30 0 dBm Max Receive Input Power 14 0 dBm Transmitter Power at 25 C Into 8 3 125 m fiber 18 0 dBm 21 0 dBm 15 0 dBm Output Power Coefficient 0 07 dB C NOTE Transmitter...

Страница 29: ...h 95 nm 125 nm Rise Time 3 0 ns 2 7 ns 5 0 ns Fall Time 2 5 ns 2 2 ns 5 0 ns Duty Cycle 50 1 49 6 50 7 Bit Error Rate Better than 10 10 NOTES The transmitter power levels given above are Peak Power Le...

Страница 30: ...A limits 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 It is the responsibil...

Страница 31: ...Appendix A FOMIM Specifications A 4 FOMIM User s Guide...

Страница 32: ...3 D 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...

Страница 33: ...Index Index 2 FOMIM User s Guide...

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