Cabletron Systems COFOT-F1, COFOT-F2 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 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 P art 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.

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

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 TO 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

P W R

X M T

R C V

C L N

L N K

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 µ m cable

• 16.0 db for 62.5/125 µ m cable

• 19.0 db for 100/145 µ 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 µ m: -13.0 dBm

16.5 dBm worst case budget

62.5/125 µ m -10.0 dBm

19.5 dBm worst case budget

100/140 µ 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

50 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 COFO T is to be cer-

tiﬁed for use in the country of installation with a SEL V output of 12 Vdc, and capable of pro viding a minimum output of 800 mA. the output connector is to be compatible with TOTAL POWER or MORFUR RJ-01-E connectors.

Operating Environment

Operating Range: +5

to +40

C (41

to 104

F) 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 deviations, 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 COFO T’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