IMC Networks Network Card iMcV Gigabit User Manual

iMcV-Gigabit  
Operation Manual  
 
Table of Contents  
FCC Radio Frequency Interference Statement ....................................................ii  
Warranty............................................................................................................ii  
About the iMcV-Gigabit .....................................................................................1  
Configuration Instructions ..................................................................................1  
LinkLoss, FiberAlert and Link Fault Pass-Through................................................3  
Using FiberAlert and LinkLoss.............................................................................4  
Link Fault Pass-Through (LFPT)...........................................................................5  
Additional Gigabit Features ................................................................................6  
Installing an iMcV Module..................................................................................6  
LED Operation...................................................................................................7  
Installation Troubleshooting ...............................................................................8  
Specifications.....................................................................................................9  
IMC Networks Technical Support.....................................................................10  
Fiber Optic Cleaning Guidelines.......................................................................11  
Electrostatic Discharge Precautions...................................................................11  
Certifications....................................................................................................12  
iii  
 
About the iMcV-Gigabit  
The SNMP manageable iMcV-Gigabit module provides a single conversion between  
1000 Base-T twisted pair and 1000 Base-SX/LX fiber. Each iMcV-Gigabit includes  
one RJ-45 connector and one pair of SC fiber optic connectors. iMcV-Gigabit  
modules install into any modular, SNMP manageable iMediaChassis, as well as the  
MediaChassis series, which is unmanaged.  
The iMcV-Gigabit is also available in a single-strand fiber version that allows two  
wavelengths to share one fiber strand—Full-Duplex data travels on different  
wavelengths (1310 nm and 1550 nm)—doubling the capacity of fiber. Also, one RJ-  
45 connector and one SC fiber connector are included.  
NOTE  
All iMcV-Gigabit modules, including 1300 nm multi-mode and 1310 nm single-mode (TX/LX),  
850 nm multi-mode fiber (TX/SX) and single-strand versions (TX/SSLX) will be referred to as  
iMcV-Gigabit throughout this guide except where differences need to be indicated.  
Configuration Instructions  
iMcV-Gigabit Modules have user-configurable features. Refer to the matrix for  
configuring both managed (via an SNMP compatible management application such as  
iView²) and unmanaged iMcV-Gigabit modules.  
Managed Modules  
To manage one or more iMcV-Gigabit Modules, an SNMP agent must be present in  
the chassis: The iMediaChassis series requires an SNMP Management Module. To  
configure Managed Modules, install the module first, and then configure using the  
management software. Refer to the iView² for MediaConverters online help file for  
additional information.  
NOTE  
If the module is going to be managed via the software management, configuration settings  
will override any hardware DIP Switch settings.  
1
 
Unmanaged Modules  
Before installing, configure the iMcV-Gigabit Module for desired features. The table  
below indicates the available features and settings for the module. After configuring  
the switch for the desired settings, install the module and connect the appropriate  
cables. For further information, refer to the Installing an iMcV Module section.  
iMcV-Gigabit w/LFPT  
DIP Switch on S1  
Feature  
Forced/Preferred  
Factory use - Do not change  
TX LinkLoss  
FiberAlert  
FX Auto Negotiation  
FX LinkLoss  
Default Setting  
1
2
3
4
5
6
7
8
ON  
ON  
OFF  
OFF  
ON  
OFF  
OFF  
OFF  
Factory use - Do not change  
Factory use - Do not change  
2
 
LinkLoss, FiberAlert and Link Fault Pass-Through  
iMcV-Gigabit modules include the troubleshooting features FiberAlert, TXLL, FXLL  
and LFPT that help locate silent failures on a network. Before attempting to install the  
module(s), understand how these features work and react to a specific network  
configuration.  
** WARNING **  
Installing modules without understanding the effects of LinkLoss and FiberAlert can  
cause functioning units to appear flawed or even non functional.  
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 copper 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. The combination of  
FiberAlert and LinkLoss allows this information to be obtained, even when physical  
access to a remote device (and its link integrity LED) is not available.  
FX LinkLoss (FXLL)  
FX LinkLoss is a troubleshooting feature. When a fault occurs on the fiber segment of  
a conversation, 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.  
TX LinkLoss (TXLL)  
TX LinkLoss is a troubleshooting feature. 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. The result is in a  
loss of the link on the device connected to the fiber port.  
3
 
FiberAlert (FA)  
FiberAlert minimizes the  
problems associated with the  
loss of one strand of fiber. If a  
strand is unavailable, the IMC  
Networks device at the  
receiver end notes the loss of  
link. The device will then stop  
transmitting data and the link  
signal until a signal or link pulse  
is received. The result is that the link LED on BOTH sides of the fiber connection will  
go out indicating a fault somewhere in the fiber loop. Using FiberAlert, a local site  
administrator is notified of a fault and can quickly determine where a cable fault is  
located.  
WARNING  
Enable FiberAlert on one side of a media conversion only. Enabling it on both  
sides would keep both transmitters off indefinitely.  
Using FiberAlert and LinkLoss  
Modules ship from the factory with troubleshooting features disabled. Refer to the  
help file to enable/disable this feature.  
4
 
Link Fault Pass-Through (LFPT)  
Link Fault Pass-Through (LFPT) is a troubleshooting feature that combines TX and FX  
LinkLoss from both the local and remote iMcV-Gigabit modules. LFPT is enabled by  
turning on both FX and TX LinkLoss on both modules. This feature allows either end  
of the conversion to detect a link fault occurring at the other end of the media  
conversion chain. FiberAlert can also be enabled at the main site.  
If a cable fault occurs on the remote devices’ twisted pair port, then TX LinkLoss  
detects the fault and disable the OPTICS port.  
If a cable fault occurs on the remote devices fiber optics’ port, then FX LinkLoss  
detects the fiber loss and disables the Twisted Pair port.  
The link fault is passed through the media conversion and is observed at each end. It  
acts just like it would if the devices were directly connected.  
For more information on LinkLoss/FiberAlert, visit the IMC Networks Web site at  
http://www.imcnetworks.com/support/ If unsure of how to implement these features  
in a specific configuration, contact IMC Networks Technical Support at  
(800) 624-1070 (U.S./Canada), +32-16-550880 (Europe) or via e-mail at:  
5
 
Additional Gigabit Features  
Preferred/Forced Mode  
The iMcV-Gigabit module also includes a Preferred/Forced Modes for Master/Slave  
negotiation. Preferred Mode helps determine whether the module should act as a  
Master or Slave. Forced Mode should typically only be used when connecting to  
some legacy switches, or when there is difficulty establishing a link. The default is  
Preferred Mode (S1-1 is ON). This feature is hardware configurable only.  
Since most switches today typically function  
as Masters, IMC Networks recommends  
configuring iMcV-Gigabit as indicated in the  
table.  
DIP Switch  
Setting  
S1-1  
ON (Preferred)  
S1-2  
ON (Forced)  
FX Negotiation on iMcV-Gigabit  
The iMcV-Gigabit module include a FX Auto Negotiation feature which negotiates  
duplex mode. This feature must be enabled or disabled on both ends of the  
connection or there may have difficulty establishing a link. If the device being  
connected to the iMcV-Gigabit module does not support Auto Negotiation, disabling  
the feature on the iMcV-Gigabit module forces the link up.  
DIP Switch settings for FX AN:  
DIP Switch  
Setting  
S1-5  
FX AN = ON  
Installing an iMcV Module  
iMcV Modules install in IMC Networks’ SNMP manageable iMediaChassis series or in  
any MediaChassis.  
To install an iMcV Module:  
1. Remove the blank bracket covering the slot where the module is to be installed  
by removing the screws on the outside edges of the bracket.  
2. Slide the iMcV Module into the chassis, via the cardguides, until the module is  
seated securely in the connector.  
3. Secure the module to the chassis by tightening the captive screw.  
4. Save any “blanks” removed during installation for future use if the configuration  
requirements change.  
6
 
AutoCross Feature for Twisted Pair Connection  
All twisted pair ports on the iMcV-Gigabit includes AutoCross, a feature that  
automatically selects between a crossover workstation and a straight-through  
connection depending on the connected device.  
LED Operation  
Each iMcV-Gigabit Module features diagnostic LEDs that provide information on  
features and ports.  
iMcV-Gigabit w/LFPT  
LNK/  
ACT  
Glows green when a twisted pair link is established. Blinks  
green when data is detected on the port. Located on RJ-45  
connector.  
FDX  
FXLL  
Glows amber when port is operating in Full-Duplex Mode  
on the RJ-45 connector.  
Glows green when FX LinkLoss is enabled on the port.  
Blinks when a fault occurs on the fiber port and actively  
disables the copper port.  
TXLL  
Glows green when TX LinkLoss is enabled on the port.  
Blinks when a fault occurs on the copper port and actively  
disables the fiber port.  
LNK  
FA  
Glows green when a twisted pair link is established.  
Glows green when FiberAlert is enabled. Blinks when a  
fault occurs on the RCV fiber line and actively disables the  
XMT fiber line.  
7
 
Installation Troubleshooting  
During installation, first test the 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 testing.  
If using 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, an optical attenuator may need to be added to the  
connection.  
For fiber specifications, visit the IMC Networks Web site at:  
www.imcnetworks.com/adocs/fcs.asp or contact IMC Networks for more information.  
8
 
Specifications  
Environmental  
Operating Temperature  
32° - 122° F (0° - 50° C)  
Storage Temperature  
130° - 158° F (-25° - 85° C)  
Humidity  
5 - 95% (non-condensing)  
Power Consumption (Typical)  
iMcV-Gigabit w/LFPT: 0.55Amp  
Fiber Optic Specifications  
For fiber optic specifications, please visit:  
9
 
IMC Networks Technical Support  
Tel: (949) 465-3000 or (800) 624-1070 (in the U.S. and Canada);  
+32-16-550880 (Europe)  
Fax: (949) 465-3020  
10  
 
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  
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 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. Should it be necessary to disconnect the fiber  
device, reinstall the protective dust caps.  
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. If you suspect that the optics have been contaminated, alternate between  
blasting with clean, dry, compressed air and flushing with methanol to remove  
particles of dirt.  
Electrostatic Discharge Precautions  
Electrostatic discharge (ESD) can cause damage to any product, add-in modules or  
stand alone units, containing electronic components. Always observe the following  
precautions when installing or handling these kinds of products  
1. Do not remove unit from its protective packaging until ready to install.  
2. Wear an ESD wrist grounding strap before handling any module or component.  
If the wrist strap is not available, maintain grounded contact with the system unit  
throughout any procedure requiring ESD protection.  
3. Hold the units by the edges; 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 modules or stand alone units over  
any surface.  
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.  
11  
 
Certifications  
CE: The products described herein comply with the Council Directive on  
Electromagnetic Compatibility (2004/108/EC).  
Class 1 Laser product, Luokan 1 Laserlaite,  
Laser Klasse 1, Appareil A’Laser de Classe 1  
European Directive 2002/96/EC (WEEE) requires that any equipment that bears this  
symbol on product or packaging must not be disposed of with unsorted municipal  
waste. This symbol indicates that the equipment should be disposed of separately  
from regular household waste. It is the consumer’s responsibility to dispose of this  
and all equipment so marked through designated collection facilities appointed by  
government or local authorities. Following these steps through proper disposal and  
recycling will help prevent potential negative consequences to the environment and  
human health. For more detailed information about proper disposal, please contact  
local authorities, waste disposal services, or the point of purchase for this equipment.  
12  
 
19772 Pauling • Foothill Ranch, CA 92610-2611 USA  
TEL: (949) 465-3000 • FAX: (949) 465-3020  
© 2009 IMC Networks. All rights reserved.  
The information in this document is subject to change without notice. IMC Networks assumes no responsibility for any  
errors that may appear in this document. iMcV-Gigabit is a trademark of IMC Networks. Other brands or product names  
may be trademarks and are the property of their respective companies.  
Document Number 50-80824-01 A2  
November 2009  
 

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