Cabletron Systems COFOT-F1 User manual

Brand: Cabletron Systems

Model: COFOT-F1

Category: Network media converters

Type: User manual

This manual is also suitable for

COFOT-F2

Cabletron Systems COFOT-F2, together with the COFOT-F1, are the coaxial to fiber optic transceivers that allow you to connect an Ethernet 10BASE-2 thin coaxial cable segment to a 10BASE-FL/FOIRL fiber optic cable segment. You can use the COFOT with Version 1, Version 2, or IEEE 802.3 equipment. COFOTs are identical except for their fiber optic connectors: COFOT-F1 has SMA connectors while COFOT-F2 has ST connectors. The COFOT-F2 supports 50/125, 62.5/125, and 100/140 µm fiber optic cable types. Link length is dependent on both the cable type and the system fiber optic budget.

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: suppor[email protected]

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 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.

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.

©Copyright September 1994 by

Cabletron Systems, Inc.

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

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

longer than 100 meters

. The cable must be

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

10BASE-FL/FOIRL

MEDIA ADAPTER

WITH

LANVIEW

POWER

INPUT

The Complete Networking Solution

TERM

LISTED

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

Fiber Optic Requirements

The COFOT supports 50/125, 62.5/125, and 100/140

m ﬁber optic cable. Link length depends on cable

type and system ﬁber optic budget. (The COFOT can

support a maximum link to link length of 1km.)

Fiber Optic Cable Link Attenuation

At an 850 nm wave length, link segment attenuation

can be no more than:

• 13.0 db for 50/125

m cable

• 16.0 db for 62.5/125

m cable

• 19.0 db for 100/145

m cable

OPERATING SPECIFICATIONS

Cabletron Systems reserves the right to change these

speciﬁcations any time without notice.

Fiber Optic Interface

Receive Sensitivity: -29.5 dBm

Peak Input Power: -8.2 dBm

Bit Error Rate: Better than 10

-9

error rate

Transmitter Peak

Wavelength: 820 nm typical; 790 nm min;

860 nm max

Spectral Width: 75 nm max

Rise Time: 10 nsec max

Fall Time: 10 nsec max

Fiber Optic Transmitter Power

50/125

m: -13.0 dBm

16.5 dBm worst case budget

62.5/125

m -10.0 dBm

19.5 dBm worst case budget

100/140

m: -7.0 dBm

22.5 dBm worst case budget

Note

: The transmitter power and receive sensitivity

levels are peak power levels. To convert to average

power levels, subtract 3 dBm.

BNC Interface

Termination: Can be connected to internal

Ω

terminator

Grounding: Connector is

NOT

grounded

System Characteristics

COFOT operational limits are determined by individual

system jitter. Because some Ethernet products built

before 1987 cannot operate when the jitter level

exceeds 14 ns, the COFOT may not give error free

operation in

all Ethernet environments.

Power Supply

Input Power USA: 90 - 135 Vac, 50-60 Hz

Input Power UK: 216 - 264 Vac, 50 Hz

Input Power Europe: 180 - 240 Vac, 50 Hz

Output Power: 0.8 amp at 12 Vdc

Note:

The power source for the COFOT is to be cer-

tiﬁed for use in the country of installation with a SELV

output of 12 Vdc, and capable of providing a minimum

output of 800 mA. the output connector is to be com-

patible with

TOTAL POWER or MORFUR RJ-01-E

connectors.

Operating Environment

Operating Range: +5

to +40

C (41

to 104

Heat Output: 32.8 Btu/hr

Storage Range: -30

to +80

C (22

to 160

Humidity Range: 5 to 95% (non-condensing)

Safety

Designed in accordance with UL1950 with D3 dev-

iations, NEC 725-2(b), CSA 22.2 No. 220, and EN

60950/DIN VDE 0805.

Emissions

Designed in accordance with EN 55022 Class A and

FCC Part 15 Class A emmission limits.

Note:

It is the responsibility of the person who sells

the system to which the COFOT will be a part to

ensure that the total system meets allowed limits of

conducted and radiated emissions.

INSTALLING THE COFOT

When you unpack the COFOT, verify that you receive

the following:

• One wall mount transformer with power cord

• One 1.5 inch x 3 inch Velcro® strip

• Three 6 inch tie wraps

• Three cable mounts

Mounting the COFOT

Remove the tape from the adhesive backed Velcro

strips. Place one Velcro half on the COFOT and the

other half on the mounting surface. Press on each

Velcro strip, then press the COFOT to the mounting

surface.

Connecting and Applying Power

The COFOT power cord has an AC to DC converter.

To connect the COFOT to a power source, plug the

converter into a standard wall outlet and the other end

of the power cord into the COFOT’s Power Input

connector. Once connected, the COFOT’s PWR

indicator should be illuminated, indicating that the

COFOT is receiving power and is ready for operation.

Caution:

Do not use a power cord/converter other

than the one that you received with the COFOT. Not all

converters supply the same voltage and current. Using

the wrong converter can damage the COFOT.

Attaching Fiber Optic Cables

Connect a ﬁber cable from the COFOT TX port to the

Ethernet device RX port, and from the COFOT RX

port to the Ethernet device TX port.

Caution:

If you are using SMA 906 connectors, use

half-alignment sleeves, not full alignment sleeves, on

the ends of the connectors. Full-alignment sleeves will

damage the COFOT’s SMA ports.

Attaching a Coax Cable

The COFOT has a selectable internal 50

Ω

terminator

which eliminates the need for a tee connector and

external terminator. To activate the COFOT’s internal

terminator, move the COFOT’s TERM switch to the ON

(

●

) position. If you use an external 50

Ω

termi-nator,

make sure that the internal terminator is turned off

(

❍

Warning:

When you set the TERM switch, use a non-

conductive probe or disconnect the power cord.

Warning:

The COFOT’s BNC port is not grounded.

Coax cable segments should be grounded at a single

point. For safety, only one end of any coax cable

segment should be connected to earth ground.

Cable Strain Relief

Anchor the data cables and the power cord to reduce

the possibility of network interruption. The COFOT

comes with adhesive backed mounting brackets and

tie wraps that you can use to anchor the COFOT’s

cables.

Cable Mounts and Tie Wraps

COFOT

92 SERIES

10BASE-2

10BASE-FL/FOIRL

MEDIA ADAPTER

WITH

LANVIEW

POWER

INPUT

The Complete Networking Solution

TERM

LISTED

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

Cabletron Systems COFOT-F1 User manual

Brand: Cabletron Systems

Model: COFOT-F1

Category: Network media converters

Type: User manual

This manual is also suitable for

COFOT-F2

Download PDF

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Cabletron Systems COFOT-F1 User manual

This manual is also suitable for

Cabletron Systems COFOT-F1 User manual

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