2
TX/SSFX Single-Strand Fiber
SNMP-Manageable Media
Conversion Modules
A BOUT L INK I NTEGRITY
During normal operation, link integrity pulses are transmitted by all pointto-point Ethernet devices. When a Black Box media converter receives valid
link pulses, it knows that the device to which it is connected is up and sending pulses, and that the copper or fiber cable coming from that device is
intact. The appropriate “LNK” (link) LED is lit to indicate this.
The Black Box media converter also sends out link pulses from its copper
and fiber transmitters, but normally has no way of knowing whether the cable
to the other device is intact and the link pulses are reaching the other end.
TX LinkLoss and FX LinkLoss allows this information to be obtained, even when
physical access to a remote device (and its link integrity LED) is not available.
W HAT
I S FX LINKL OSS?
When a fault occurs on the fiber segment of a conversion, FX LinkLoss
detects the fault and passes this information to the twisted pair segment. If a
media converter is not receiving a fiber link, FX LinkLoss disables the transmitter on the media converter's twisted pair port. This results in a loss of link
on the device connected to the twisted pair port.
W HAT
I S TX LINKL OSS?
When a fault occurs on the twisted pair segment of a conversion, TX
LinkLoss detects the fault and passes this information to the fiber segment. If
a media converter is not receiving a twisted pair link, TX LinkLoss disables the
transmitter on the media converter's fiber port. This results in a loss of link
on the device connected to the fiber port.
C
ONFIGURING AND USING TX AND FX LINKL OSS
TX/SSFX Modules ship from the factory with TX LinkLoss and FX LinkLoss
disabled. See the configuration chart on page 2 for instructions on enabling/
disabling these features. In a typical main site to remote site media conversion, Black Box recommends you enable your media converters’ troubleshooting features as follows:
• FX LinkLoss: Main Site • TX LinkLoss: Remote Site
This will ensure that any faults, no matter where they occur, can be
detected by an administrator located at the main site.
Auto-Negotiation on TX/SSFX Modules
TX/SSFX Modules include the feature Auto-Negotiation. When AutoNegotiation is enabled, the module negotiates as a 100 Mbps Full-Duplex
device; if the device the TX/SSFX Module is connected to can operate at 100
Mbps Full-Duplex, a link will be established. If the twisted pair port on the
other device does not have the ability to auto-negotiate, or if a 100 Mbps
Half-Duplex connection is desired, Auto-Negotiation on the TX/SSFX Module
must be disabled. Half- and Full-Duplex settings must be manually set and
match on both devices the TX/SSFX Module is connected to.
Dual wavelength, single-strand fiber TX/SSFX Media Converters from Black
Box perform a 100 Mbps Fast Ethernet copper to fiber conversion and allow
two wavelengths to share one fiber strand — Full-Duplex data travels on different wavelengths (1310 nm and 1550 nm) — doubling the capacity of
installed fiber. TX/SSFX Modules are IEEE 802.3 100Base-TX and 100Base-FX
Fast Ethernet compliant and install in any SNMP-manageable High Density
Media Converter System II chassis or any SNMP Manageable Media Converter
chassis from Black Box. Refer to your chassis’ manual for more information.
LMC5112C TX/SSFX SM-SC Matched Module Set contains the following
two modules:
LMC5113C: TX/SSFX SM-SC (1310xmt/1550rcv)
LMC5114C: TX/SSFX SM-SC (1550xmt/1310rcv)
LMC5115C TX/SSFX SM/PLUS-SC Matched Module Set contains the
following two modules:
LMC5116C: TX/SSFX SM/PLUS-SC (1310xmt/1550rcv)
LMC5117C: TX/SSFX SM/PLUS-SC (1550xmt/1310rcv)
Configuration Instructions
Following are instructions for configuring both managed (via an SNMP-
compatible management application like iView) and unmanaged modules.
M ANAGED M ODULES
In order to manage one or more TX/SSFX Modules, an SNMP agent must be
present:
Media Converter System II chassis include embedded management;
other SNMP-manageable media converters require a Master Module. When
configuring managed modules, install the module first (see page 4 for instructions), then configure it using the management software Within iView for
iMediaConverters (iView for iMc), troubleshooting and other features are configured in the Module Detail section under the picture of the module. See the
iView for iMc online help file for more information.
Management software will override any hardware settings (e.g., jumper, switch, etc.), so you MUST configure a module that will be managed via the software. Until a module installed in a managed chassis is configured via the software, the module (and its LEDs) may not work properly.
NOTE
U NMANAGED
M ODULES
Before installing, TX/SSFX Modules may be configured for LinkLoss and Auto-
Negotiation. The diagram below shows the location of the DIP switch and
jumpers on TX/SSFX Modules.
DIP Switch and Jumper Settings for TX/SSFX Modules
Twisted Pair Crossover/Pass-Through Connection
TX/SSFX Modules include AutoCross, a feature which automatically selects
between a crossover workstation or pass-through/repeater hub connection
depending on the connected device. Note: a MDI/MDI-X switch is not required.
About FX and TX LinkLoss
TX/SSFX Modules include the following troubleshooting features:
• FX LinkLoss • TX LinkLoss
These are advanced troubleshooting features that can help you locate "silent
failures" on your network. However, it is vital that you understand exactly how
LinkLoss works, and how it will react in your network configuration, before
attempting to install the enclosed module(s).
OFF ON
8
7
6
5
4
3
2
1
JP2
FX
Jumper
LinkLoss
JP3
TX
Jumper
LinkLoss
TX/FX
Linkloss
TX/FX
Linkloss
Enabled Disabled
(Default)
Enabled Disabled
(Default)
3
1
INSTALLATION TIP
When testing, Black Box recommends you test your module first in an unmanaged environment. To do
this, turn the SNMP management switch to OFF on an Media Converter System II chassis, or remove the
management module from other SNMP-manageable chassis. Follow the unmanaged configuration
instructions, then install the module, connect the cables and test the LEDs. When finished, reactivate
management and configure the unit via the software.
Installing modules without understanding the effects of LinkLoss can cause perfectly
functioning units to appear flawed or even dead.
These modules must be used in pairs, with one TX/SSFX Module on one end of the conversion and
another TX.SSFX module, or another single-strand fiber product from Black Box, at the other end.
NOTE
JP2 FX LinkLoss 1 - 2 2 -3
JP3 TX Linkloss 1 - 2 2 -3
JUMPER FUNCTION ON OFF
SWITCH FUNCTION DEFAULT
1 Auto-Negotiation OFF
2 - 8 Factory Configured -- DO NOT CHANGE VARIES
FX AND TX LINKL OSS C OMPARED
Feature
FX LinkLoss
TX LinkLoss
Fault Location
Fiber
Twisted Pair
Disabled LEDs
Twisted Pair
Fiber
LMC5112C — LMC5113C — LMC5114C LMC5115C — LMC5116C — LMC5117C
The following diagram shows a typical application, followed by a table with
three possible configurations.
Configure Auto-Negotiation on a TX/SSFX Module by adjusting a DIP switch
setting (for unmanaged modules) or via the management software. Please see
the diagram on page 2 of this manual for switch location and settings.
Installing TX/SSFX Modules
TX/SSFX Modules may be installed in any SNMP-manageable High Density
Media Converter System II chassis or SNMP Manageable Media Converter chas-
sis from Black Box. (Please refer to your chassis’ installation guide for more information). Each module requires one slot in a chassis. To install a module, remove
the blank brackets covering the slots where the module is to be installed (if present) by removing the screws on the outside edges of the bracket. Slide the module into the chassis, via the card guides, until the module is seated securely in
the connector. Secure the module to the chassis by tightening the captive screw.
Save any “blanks” removed during installation for future use should your configuration requirements change.
Installation Troubleshooting
● During installation, first test your fiber and twisted pair connections with all trou-
bleshooting features disabled, then enable these features, if desired, just before
final installation. This reduces the features’ interference with testing.
● When working with units where the features cannot be disabled, you must estab-
lish BOTH your twisted pair and fiber connections before the link LEDs will light!
● To test the media converters by themselves, first make sure you have an appropri-
ate fiber patch cable, then follow these steps to test:
Step 1: Connect the media converter to the twisted pair device with a twisted
pair cable.
Step 2: Connect a single strand of fiber from one single-strand connector to the
other TX/SSFX Module.
Step 3: Verify that you have both twisted pair and fiber link (see LEDs, below) on
your media converter.
● If attempting to use a high powered device (which is designed for long distance
installations) for a short distance installation, the fiber transmitters may overdrive
the receivers and cause data loss. If this is the case, you may need to add an optical attenuator to your connection.
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5
LED Operation
The LED functions for TX/SSFX Modules are as follows:
T WISTED P AIR
LED
RRCCVV
Glows yellow when data is being received.
XXMMTT
Glows green when data is being transmitted.
LLNNKK
Glows green when a link is established on the port.
LLLL
Glows green when FX LinkLoss is enabled.
F IBER O
PTIC LEDS
LLIINNKK
Glows green when a link is established on the port.
XXMMTT
Glows green when data is being transmitted.
RRCCVV
Glows yellow when data is being received.
General Information
Black Box Customer Service
Call: (724) 746-5500 Phone orders 24 hours a day,
7:00 AM Monday to midnight Friday;
8:00 AM to 4:00 PM Saturday (EST)
Fax: (724) 746-0746 or in North America 1-800-321-0746
Mail order: Black Box Corporation,
1000 Park Drive, Lawrence, PA 15055-1018
Technical Support and fax orders 24 hours a day.
S PECIFICATIONS
Environmental
Operating Temperature: 32° - 104° F (0° - 40° C)
Storage Temperature: 0° - 160° F (-20° - 70° C)
Humidity: 5 - 95% (non-condensing)
Power Consumption (Typical)
Input Load: 5VDC ± 5%, 800 mA (Max.)
WWaarrrraannttyy IInnffoorrmmaattiioonn
Please contact Black Box for complete warranty information.
FFiibbeerr OOppttiicc CClleeaannii nngg GGuuiiddeelliinneess
Fiber optic transmitters and receivers are extremely susceptible to contamination by particles of
dirt or dust which can obstruct the optic path and cause performance degradation. Good system
performance requires clean optics and connector ferrules.
1) Use fiber patch cords (or connectors, if you terminate your own fiber) only from a reputable
supplier; low-quality components can cause many hard-to-diagnose problems in an installation.
2) Dust caps are are installed by the manufacturer to ensure factory-clean optical devices. These
protective caps should not be removed until the moment of connecting the fiber cable to the
device. Assure that the fiber is properly terminated, polished and free of any dust or dirt and
that the location is as free from dust and dirt as possible.
3) Store spare caps in a dust-free environment such as a sealed plastic bag or box so that,
when reinstalled, they do not introduce any contamination to the optics.
4) Should it be necessary to disconnect the fiber device, reinstall protective dustcaps.
5) If you suspect that the optics have been contaminated, alternate between blasting with
clean, dry, compressed air and flushing with methanol to remove dirt particles.
EEll eeccttrroossttaattiicc DDiisscchhaarrggee PPrreeccaauuttiioonnss
Electrostatic discharge (ESD) can cause damage to your add-in modules. Always observe the
following precautions when installing or handling an add-in module or any board assembly.
1) Do not remove unit from its protective packaging until you’re ready to install it.
2) Wear an ESD wrist grounding strap before handling any module or component.
If you do not have a wrist strap, maintain grounded contact with the system unit
throughout any procedure requiring ESD protection.
3) Hold boards by the edges only; do not touch the electronic components or gold
connectors.
4) After removal, always place the boards on a grounded, static-free surface, ESD
pad or in a proper ESD bag. Do not slide the board over any surface.
F EDERAL C OMMUNICATIONS C OMMISSION R ADIO
F REQUENCY I NTERFERENCE S TATEMENT
This equipment has been tested and found to comply with the limits for a Class A computing 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
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which the user will be required
to correct the interference at his own expense.
Any changes or modifications not expressly approved by the manufacturer could void the user's
authority to operate the equipment.
The use of non-shielded I/O cables may not guarantee compliance with FCC RFI limits.
This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de classe A prescrites dans le Règlement sur le brouillage radioélectrique publié
par le ministère des Communications du Canada.
6
WARNING! Integrated circuits and fiber optic components are extremely susceptible to electrostatic discharge damage. Do not handle these components directly unless you are a qualified
service technician and use tools and techniques that conform to accepted industry practices.
1000 Park Drive • Lawrence, PA 15055-1018 USA
TEL: (724) 746-5500 • FAX: (724) 873-7049
info@blackbox.com • www.blackbox.com
© 2002 Black Box Corp. All rights reserved.
The information in this document is subject to change without notice. Black Box assumes no responsibility for any
errors that may appear in this document. Product names are trademarks of the manufacturer. Other brands or product names may be trademarks and are the property of their respective companies.
Document Number 49-80700BB-00-A0 October 2002
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