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:
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
RX
TX
P
W
R
X
M
T
R
C
V
C
L
N
L
N
K
