Cabletron Systems COFOT-F1 User Manual

USING LANVIEW

LANVIEW is Cabletron Systems’ diagnostic and

monitoring system.

Power (PWR) 

When lit, this green LED indicates that

the COFOT is receiving power. If the PWR LED is not

lit, check that the power cord is plugged into the

COFOT and the wall socket, and that the wall socket

has power.

Transmit (XMT) 

The green LED flashes when the CO-

FOT is receiving data at the fiber port and transmitting

it from the coax port. The LED flash is pulse stretched

for viewing effect.

Receive (RCV)

 This yellow LED flashes when the CO-

FOT is receiving data at the coax port and transmitting

it from the fiber port. The LED is pulse stretched for

viewing effect.

Collision (CLN) 

This red LED flashes when the

adapter detects a collision condition or a jabber packet

on the network. The flash frequency may increase as

network traffic increases since more collisions are

likely to occur. The LED is pulse stretched for viewing

effect.

Link OK (LNK) 

When lit, this green LED indicates that

a link has been established between the COFOT and

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

The LED remains lit as long as the link is maintained.

GETTING HELP

If you have questions, or need additional help, contact

Cabletron Systems Technical Support as follows:

By phone:

Monday through Friday,

8 am to 8 pm EST at

(603) 332-9400

By CompuServe:

GO CTRON from any ! prompt

By Internet mail:

support@ctron.com

LANVIEW 

is a registered trademark, 

COFOT-F1 

and

COFOT-F2 

are trademarks of Cabletron Systems, Inc.

CompuServe 

is a registered trademark of CompuServe

Ethernet

 is a trademark of Xerox Corp.

Velcro 

is a registered trademark of Velcro Industries, B.V.

FCC NOTICE

This device complies with Par t 15 of the FCC r ules.

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

m a n u a l ,   m ay   c a u s e   h a r m f u l   i n t e r fe r e n c e   t o   r a d i o

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.

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

F O R   A N Y   I N C I D E N TA L ,   I N D I R E C T,   S P E C I A L ,   O R

C O N S E Q U E N T I A L   DA M A G E S  W H AT S O E V E R

(INCLUDING, BUT NOT LIMITED TO, LOST PROFITS)

ARISING OUT OF OR RELATED TO THIS MANUAL OR

T H E   I N F O R M AT I O N   C O N TA I N E D   I N   I T,   E V E N   I F

CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN

OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH

DAMAGES.

©Copyright September 1994 by

Cabletron Systems, Inc.

P.O. Box 5005, Rochester, NH 03866-5005

All Rights Reserved

Printed in The United States of America

Part number: 9030120-02 September 1994

COFOT-F1 and COFOT-F2

 10BASE-2 to 10BASE-FL/FOIRL

Extended Media Adapter

The COFOT-F1 and COFOT-F2 coaxial to fiber optic

transceivers let you connect an Ethernet 10BASE-2

thin coaxial cable segment to a 10BASE-FL/FOIRL

fiber optic cable segment. The COFOT-F1 and

COFOT-F2 are identical except for their fiber optic

connectors:

• The COFOT-F1 has SMA connectors.

• The COFOT-F2 has ST connectors.

Except where noted otherwise, this guide collectively 

refers to both versions of the adapter as COFOT.

REQUIREMENTS

The COFOT Extended Media Adapter complies with

IEEE 802.3 10BASE-FL/FOIRL specifications. You can

use the COFOT with Version 1, Version 2 or IEEE

802.3 equipment. For best network performance, be

sure to observe the following network guidelines.

Coax Requirements

Use 50

Ω

 RG-58 coaxial cable. The cable must be

 no

l o n g e r   t h a n   1 0 0   m e t e r s

. T h e   c a bl e   m u s t   b e

terminated with a 50

Ω

 terminator at both ends. (The

COFOT has a switch selectable terminator.) The

COFOT supports a 

maximum of ten connections

per segment.

COFOT 

92 SERIES

10BASE-2 

TO

 10BASE-FL/FOIRL

MEDIA ADAPTER 

WITH

 LANVIEW

®

POWER

INPUT

The Complete Networking Solution

TERM

SN

LISTED

UL

®

16EO

                     ITE REPEATER UNIT

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) THIS DEVICE MAY NOT CAUSE INTERFERENCE, AND

(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

POWER REQUIRED: 10-15V - - - , 800mA MAX

DATA CAPABILITY: 10Mb/s

®

TUV Rheinland

LR65407

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