IMC Networks iMcV-MediaLinX TX/SSFX User manual

About iMcV-MediaLinX TX/SSFX
iMcV-MMediaLinX TTX/SSFX™is an SNMP-manageable, IEEE 802.3 10/100 switch-
ing media converter from IMC Networks which converts both speed and media.
iMcV-MediaLinX TX/SSFX provides a single conversion between:
• 10Base-T twisted pair and 100Base-FX single-mode fiber, or
• 100Base-TX twisted pair and 100Base-FX single-mode fiber.
iMcV-MediaLinX TX/SSFX modules feature one RJ-45 connector and one SC fiber
connector, and require one slot in an SNMP-manageable iMediaCenter™ or iMcV™
series chassis from IMC Networks. iMcV-MediaLinX TX/SSFX is part of IMC Networks’
iMcV Series. Installation instructions for other iMcV Modules can be found in the
“iMcV Module Installation Guide” or in their respective installation guides. Install
guides, as well as a variety of product literature and other information, can be found
on the IMC Networks Web site at: http://www.imcnetworks.com/tech/techsup.asp
About Single-Strand Fiber Optics
Single-strand fiber optics were developed to reduce the amount of fiber required
for an installation. Typical duplex fiber requires a separate connector for the trans-
mit and receive optics, therefore requiring fiber to be run in pairs. Single-strand fiber
optics have made this unnecessary, as they transmit and receive over the same indi-
vidual fiber strand, thereby reducing the amount of fiber optic cabling by one-half.
Single-strand
fiber uses optics
that transmit and
receive on two
different wave-
lengths. Each
individual wave-
length carries a
different signal
and, with complementary receivers on the opposite side, they are able to transmit
and receive data over a single fiber run. This makes it necessary for
iMcV-MediaLinX TX/SSFX to be used in pairs (as they must have complementary
transmit and receive optics on each end), or be connected to another IMC Networks
single-strand product.
Configuration Instructions
End-users may configure iMcV-MediaLinX TX/SSFX modules for various features
(see chart on page 2 for information). Following are instructions for configuring
both managed (via an SNMP-compatible management application like iView²) and
unmanaged modules.
MANAGED MODULES
To manage one or more iMcV Series modules, an SNMP agent must be also pres-
ent in the chassis: iMediaCenter series chassis include embedded management;
iMcV series chassis require an iMcV-Master Module. When configuring managed
modules, install the module first (see page 4 for instructions), then configure it using
the management software. Within iView² for Media Converters, troubleshooting and
other features are configured in the Module Detail section under the picture of the mod-
ule. See the iView² online help file for more information.
UNMANAGED MODULES
Before installing, iMcV-MediaLinX TX/SSFX modules may be configured for LinkLoss,
Auto-Negotiation, duplex mode and speed. The illustration below indicates functions and
locations of the DIP switches available on the iMcV-MediaLinX TX/SSFX modules.
DIP SSwitch LLocation aand CConfiguration SSettings
NOTE: Selective Advertising is NOT an option when Auto-Negotiation is disabled.
Flow Control is used to throttle the END device to avoid dropping packets during network congestion.
Full-Duplex Flow Control will Advertise ONLY in Full-Duplex Mode. Full-Duplex Flow Control functions
ONLY if link partner (end devices) also has Flow Control. Half-Duplex Flow Control DOES NOT
Advertise.
ABOUT LINKLOSS
iMcV-MediaLinX TX/SSFX modules include the following troubleshooting features:
• FX LinkLoss • TX LinkLoss
LinkLoss is an advanced troubleshooting feature that can help you locate "silent fail-
ures" on your network. However, it is vital that you understand exactly how LinkLoss
works, and how it can react in your network configuration, before attempting to install
the enclosed module(s).
ABOUT LINK INTEGRITY
During normal operation, link integrity pulses are transmitted by all point-to-point
Ethernet devices. When an IMC Networks media converter receives valid link pulses, it
knows that the device to which it is connected is up and sending pulses, and that the cop-
Auto-Negotiation & Selective Advertising Configuration Chart
Desired
Speed/Duplex
Auto-
Negotiation
Selective
Advertising Speed Duplex
100 Mbps FDX ON ON 100 FDX
100 Mbps HDX ON ON 100 HDX
10 Mbps FDX ON ON 10 FDX
10 Mbps HDX ON ON 10 HDX
DDiipp
SSwwiittcchh SSeettttiinnggss ffoorr iiMMccVV-MMeeddiiaaLLiinnXXTTXX//SSSSFFXX
SS11
FFuunnccttiioonn
DDeeffaauulltt
1
Auto-Negotiation
ON
2
TX Port: HDX(ON) or FDX(OFF)
OFF
3
TX Port: 100(ON) or 10(OFF)
OFF
4
TX LinkLoss
OFF
5
FX LinkLoss
OFF
6
FX Port: HDX(ON) or FDX(OFF)
OFF
7
Factory Default Do Not Change
8
Selective Advertising
OFF
SS22
FFuunnccttiioonn
DDeeffaauulltt
1
Full-Duplex - Flow Control
OFF
2
Half-Duplex - Flow Control
OFF
3-8
Factory Default Do Not Change
per or fiber cable coming from that device is intact. The appropriate “LNK” (link) LED
is lit to indicate this.
The IMC Networks 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.
WHAT ISFX LINKLOSS?
FX LinkLoss is a troubleshooting feature. When a fault occurs on the fiber segment
of a conversion, FX LinkLoss detects the fault and passes this information to the twist-
ed 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.
WHAT ISTX LINKLOSS?
TX LinkLoss is another troubleshooting feature. When a fault occurs on the twist-
ed pair segment of a conversion, TX LinkLoss detects the fault and passes this infor-
mation 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.
USING TX AND FX LINKLOSS
In a typical main site to
remote site media conversion,
IMC Networks 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. For more information on LinkLoss, please
visit the IMC Networks Web site at: hhttttpp::////wwwwww..iimmccnneettwwoorrkkss..ccoomm//tteecchh//rreeff-ffeeaattuurreess..aasspp..If
you are unsure of how best to implement these features in your configuration, please
contact IMC Networks technical support at [phone] (U.S. and Canada),
[phone] (Europe) or via e-mail at: tteecchhssuuppppoorrtt@@iimmccnneettwwoorrkkss..ccoomm..
AutoCross Feature for Twisted Pair Connections
The twisted pair port of the iMcV-MediaLinX TX/SSFX module includes AutoCross,
a feature which automatically selects between a crossover workstation or pass-
through/repeater hub connection depending on the connected device.
Auto-Negotiation, Duplex Mode and Speed
The twisted pair port on iMcV-MediaLinX TX/SSFX modules auto-negotiates for
speed and duplex mode. These modules also provide the option of manually setting
the speed and duplex mode if the connected devices do not have the ability to auto-
negotiate, or when Auto-Negotiation is not preferred. The fiber port does not auto-
negotiate; it is always 100 Mbps with Half- or Full-Duplex operation which is selec-
table through the switch settings or iView.
AUTO-NEGOTIATION
iMcV-MediaLinX TX/SSFX ships from the factory with Auto-Negotiation enabled on
the twisted pair port. In this mode, the twisted pair port negotiates for speed and
duplex mode (i.e. the module autosenses 10 Mbps Full-Duplex, 10 Mbps Half-
Duplex, 100 Mbps Full-Duplex with Flow Control or 100 Mbps Half-Duplex with
Flow Control). Configure Auto-Negotiation on an iMcV-MediaLinX TX/SSFX by
adjusting the DIP Switch setting (for unmanaged modules) or via the management
software. Please see page 2.
123
XMT 1550 RCV 1550
XMT 1310RCV 1310
XMT 1550 RCV 1550
XMT 1310RCV 1310
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
Installing modules without understanding the effects of LinkLoss can cause
perfectly functioning units to appear flawed or even dead.
When testing, IMC Networks recommends you test your module first in an unmanaged environment. To
do this, turn the SNMP management switch to OFF on an iMediaCenter, or remove the management mod-
ule from an iMcV Series chassis. Follow the unmanaged configuration instructions (above), then install the
module, connect the cables and test the LEDs. When finished, reactivate management and configure the
unit via the software.
INSTALLATION TIP
FX LinkLoss and TX LinkLoss C ompared
Feature
Fault Location
Disabled LEDs
FX LinkLoss
Fiber
Twisted Pair
TX LinkLoss
Twisted Pair
Fiber
Installation
Guide iMcV-MediaLinX TX/SSFX

SELECTIVE ADVERTISING WITH AUTO-NEGOTIATION
Selective Advertising, when used in combination with Auto-Negotiation, advertis-
es only the configured speed and duplex mode for the twisted pair port. If Selective
Advertising and Auto-Negotiation are both switched ON, the twisted pair port’s
speed (10 or 100 Mbps) and Duplex mode (FDX or HDX) can be separately config-
ured per your requirements. (See the Auto-Negotiation & Selective Advertising
Configuration Chart on page 2 for optional configurations using these features.)
If a specific speed and/or duplex mode is desired, it is recommended that you use Selective
Advertising rather than Force Mode, when connecting to devices that ONLY auto-negotiate
FORCING THE DUPLEX MODE
The twisted pair and fiber ports on iMcV-MediaLinX TX/SSFX modules can each be
manually configured for either Half- or Full-Duplex operation. Before manually set-
ting the duplex mode, Auto-Negotiation must be disabled. (Set Dip Switch 1 on S1
to the OFF position.)
• Configure the twisted pair port for Full-Duplex by setting Dip Switch 2
to the OFF position (Default).
• Configure the twisted pair port for Half-Duplex by setting Dip Switch 2 to
the ON position.
• Configure the fiber port for Full-Duplex by setting Dip Switch 6 to the
OFF position (Default).
• Configure the fiber port for Half-Duplex by setting Dip Switch 6 to the
ON position.
FORCING THE SPEED
The twisted pair port on iMcV-MediaLinX TX/SSFX can also be manually set for 10
Mbps or 100 Mbps operation. Before manually setting the speed, Auto-Negotiation
must be disabled. (Set Dip Switch 1 on S1 to the OFF position.)
• Configure the twisted pair port for 10 Mbps operation by setting
Dip Switch 3 to the OFF position.
• Configure the twisted pair port for 100 Mbps operation by setting
Dip Switch 3 to the ON position.
NOTE: The fiber port always operates at 100 Mbps.
Installing iMcV-MediaLinX, TX/SSFX Modules
iMcV-MediaLinX, TX/SSFX modules may be installed in any IMC Networks, iMcV
series or iMediaCenter series chassis. Each module will take one slot in the chassis.
To install a module, remove the blank brackets covering the slots (if present)
where the module is to be installed 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
troubleshooting features disabled, then enable these features, if desired, just
before final installation. This will reduce the features’ interference with test-
ing.
• When working with units where the features cannot be disabled, you must
establish 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
appropriate 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 fiber cable from the local iMcV-MediaLinX TX/SSFX
module to a remote site iMcV-MediaLinX TX/SSFX module.
Note: iMcV-MediaLinX TX/SSFX modules function in pairs! Step 2 requires the use of
one iMcV-MediaLinX TX/SSFX (1310 XMT/1550 RCV)module at one end of the fiber
run, and an iMcV-MediaLinX TX/SSFX (1550 XMT/1310 RCV) module connected at the
other end of the fiber run.
Step 3: Verify that you have both twisted pair and fiber link (see LED on
following page) on your media converter.
• The fiber transmitters used on IMC Networks’ media conversion modules can
overdrive the receivers and cause data loss if used in installations where cable
power losses are low. To verify this, measure the optical power at the receiver.
The measured power should be no greater than specified and no less than the
Average Receive Sensitivity. For complete fiber specifications, visit our Web site
at: http://www.imcnetworks.com/adocs/fcs.asp
If measured power is greater than specified, install an optical attenuator to bring
power within specification. Contact IMC Networks for more information.
LED Operation
TWISTED PAIR LED
TX LL Glows green when TX LinkLoss is enabled.
100 Glows yellow when 100 Mbps is selected on port.
LNK/ACT
• Glows green when a link is established on port.
• Blinks green when data activity occurs.
FDX/COL
• Glows yellow when port is in Full-Duplex mode.
• Blinks yellow when modules are being operated in
Half-Duplex mode and collisions occur.
FIBER OPTIC LEDS
FX LL Glows green when FX LinkLoss is enabled.
LNK/ACT
• Glows green when a link is established on port.
• Blinks green when data activity occurs.
FDX/COL
• Glows yellow when port is in Full-Duplex mode.
• Blinks yellow when modules are being operated in
Half-Duplex mode and collisions occur.
General Information
IMC NETWORKS TECHNICAL SUPPORT
Phone: [phone] or [phone] (in the U.S. and Canada)
[phone] (Europe)
Fax: [phone]
E-MMail: [email protected]om
Web: www .i mcne t w o r k s .com
WAARRRRAANNTTYYINNFFOORRMMAATTIIOONN
Please contact IMC Networks for complete warranty information.
456
SPECIFICATIONS
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: 500mA
Fiber Optic Specifications
For fiber optic specifications, visit our Web site at:
http://www.imcnetworks.com/adocs/fcs.asp
FIBER OPTIC CLEANING GUIDELINES
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 degra-
dation. 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 prob-
lems in an installation.
2) Dust caps are are installed at IMC Networks 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.
ELECTROSTATIC DISCHARGE PRECAUTIONS
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 assem-
bly.
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.
Questions or Comments about this manual? Contact tteecchhddooccss@@iimmccnneettwwoorrkkss..ccoomm
© 2002-2003 IMC Networks. All rights reserved.
The information in this document is subject to change without notice. IMC Networks assumes no responsibili-
ty for any errors that may appear in this document. iMcV-MMediaLinX, TX/SSFX is a trademark of IMC Networks.
Other brands or product names may be trademarks and are the property of their respective companies.
Document Number 56-80934-00-A4 March 2003
19772 Pauling • Foothill Ranch, CA 92610-2611 USA
TEL: [phone] • FAX: [phone]
www.imcnetworks.com
WARNING! Integrated circuits and fiber optic components are extremely susceptible to electro-
static 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.