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EM316-2SFP 
Transparent SFP-to-SFP Converter 
With EM316NM or EM316LNXNM-OT Management 
 
 
User Guide 
PN 1259003-001 
Revision C3 
 
 
 
 
 
 
 
 
 
 
October 30, 2007 
                                                                                                                                                                                                                                                                                                                                 
                    
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                          EM316-2SFP User Guide        Table of Contents      1 Preliminary Considerations.............................................................................................................iv  1.1 Trademarks..................................................................................................................................iv  1.2 Copyright .....................................................................................................................................iv  1.3 Cu
                    
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                          EM316-2SFP User Guide          4 Module Management .......................................................................................................................13  4.1 Remote Command Line Interface (CLI) Setup ...........................................................................14  4.2 Serial Command Line Interface (CLI) Setup...............................................................................14  4.2.1 EM316NM Serial Console Setup ....................................
                    
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                          EM316-2SFP User Guide                Table of Figures      Figure 1   -- Unpacking ...........................................................................................................................3  Figure 2   -- Front Panel Schematic of the EM316-2SFP .......................................................................4  Figure 3   -- LED Legend ........................................................................................................................4  Figure 4   – 
                    
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                          EM316-2SFP User Guide      1 Preliminary Considerations    1.1 Trademarks    All trademarks are the property of their respective holders.      1.2 Copyright    MRV Communications reserves the right to make changes to products and documentation without  notice in order to improve reliability, function, or design. The user assumes sole responsibility for  applying the information supplied herein.    Copyright © 2007 MRV Communications. All rights reserved.      1.3 Customer Support    Before con
                    
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                          EM316-2SFP User Guide      1.4 MRV Regulatory Compliance    Contact your sales representative for more regulatory compliance information regarding specific  MRV products or product families.    Fiber Driver Chassis    FCC Part 15 (Class A); IC (Class A); EMC Directive: Emission (Class A) and Immunity; LVD  Directive: Electrical Safety; CE Marking; TUV CUE Mark (Canada, USA, EU); GOST; RoHS  Directive, WEEE Directive: Wheelie Bin Mark; ETSI, NEBS, C-Tick    Fiber Driver Modules    FCC Part 15 (
                    
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                          EM316-2SFP User Guide    1.5 General Safety    1.5.1 Cautions and Warnings    Disconnect all power from electronic devices before servicing. Some equipment may have  multiple power cords requiring disconnection.      1.5.2 Laser Safety    WARNING: Fiber optic equipment may emit laser or infrared light that can injure your  eyes. Never look into an optical fiber or connector port. Always assume that fiber optic  cables are connected to a laser light source.    CAUTION: Do not install or termina
                    
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                          EM316-2SFP User Guide          1.5.3 Static Electricity    Eliminate static electricity in the workplace by grounding operators, equipment, and devices  including components and computer boards. Grounding prevents static charge buildup and  electrostatic potential differences. Transporting products in special electrostatic shielding  packages reduces electrical field damage potential.        1.5.4 Workplace Preparation    A safe and effective workplace provides the following items.    • ESD pr
                    
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                          EM316-2SFP User Guide            1.6 Specific Document Information    Document Number:  P/N 1259003-001 Rev C3    Document:    EM316-2SFP User Guide    Release Date:   October 30, 2007 12:24:44 PM          1.7 Latest Revision and Related Documents    The latest revision of MRV documents may be found at http://www.mrv.com.    Release Notes for Fiber Driver products are produced as required.    MegaVision User Guide: Describes management of Fiber Driver modules and other MRV  ® Communications SN
                    
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                          EM316-2SFP User Guide        2 Product Overview    The EM316-2SFP transparent converter contains two MSA compliant SFP sockets connected back- to-back. No components on the EM316-2SFP board are connected to the data path, so the module is  considered transparent. Supported speed ratings range from 100 Mbps up to 2.7 Gbps where speed- matching or multi-rate SFPs are required in both ports. This EM316-2SFP converter is hot-pluggable,  and it is managed through the Fiber Driver management bus fro
                    
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                          EM316-2SFP User Guide            2.1.2 Loopback      The EM316-2SFP module supports loopback either by DIP switch setting or controlled through  the CLI or SNMP software settings. For software control the Loopback DIP switch must be set  to OFF. It the Loopback switch is ON, it cannot be over-ridden by software.    Loopback is one way to assure that the fiber optical communication path is valid and error free.  Packets sent over a short-circuit link should be received by the sender without any
                    
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                          EM316-2SFP User Guide        3 Preparation and Installation    3.1 Unpacking the Fiber Driver Module    Follow the steps below as illustrated in the figure.    Step 1. Open the cardboard box.    Step 2. Remove the static bag containing the device.    Step 3. Check for additional accessories in the box that may move beneath the module tray  during transit.    In the unlikely event that anything is missing, contact your authorized dealer or representative. If it  becomes necessary to return the 
                    
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                          EM316-2SFP User Guide        3.2 Front Panel Description      Figure 2   -- Front Panel Schematic of the EM316-2SFP      The EM316-2SFP module is equipped with the following interfaces:    Port 1 (P1): SFP port rated 100 Mbps to 2.7 Gigabit depending on SFP interface    Port 2 (P2): SFP port rated 100 Mbps to 2.7 Gigabit depending on SFP interface      Cable Lengths  The maximum cable length for SFP links is dependent upon the optical characteristic of the SFP  transceivers only. The EM316-2SF
                    
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                          EM316-2SFP User Guide      3.3 DIP Switch Configuration    The EM316-2SFP factory default configuration is designed to operate in the most common  applications.    Network Management = Enabled  LIN = Disabled  Loopback = Disabled      The default configuration optimizes the EM316-2SFP module in most applications. Network  management configuration does not override hardware DIP switch settings. These settings can  only be changed using the DIP switches (SW1) on the EM316-2SFP module, regardless
                    
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                          EM316-2SFP User Guide      3.4 Module Installation      EM316xx cards are hot-swappable, and they are designed to insert into a powered Fiber Driver  chassis. Install the EM316xx module into a single slot or multiple slot chassis by aligning the edge  of the card with the rail of the chassis and hand-tighten the thumb screw.    The thumb screw points to the left in the BU-1, BU-2, BU-3, and BU-4 chassis. The thumb screw  points to the bottom in the BU-16 chassis.      Tools  • 6-inch Phillips 
                    
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                          EM316-2SFP User Guide        Step 2. Install the module inside a Fiber Driver chassis by aligning the edge of the card with the  rail of the chassis. Tighten the thumbscrew by hand.              Figure 7   -- Module installation (not all chassis are shown)        Handle the module by the edges to avoid damaging any components. Follow all ESD  precautions listed at the front of this manual. Use your thumb to push the module securely into  the chassis slot. Do not use excessive force, but make s
                    
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                          EM316-2SFP User Guide    3.5 Small Form Pluggables (SFP): Handling and Installation    The EM316-2SFP accepts any SFP that complies with the MSA standard. Use MRV components  for guaranteed results.    Follow all ESD precautions listed at the front of this manual.    3.5.1 Cleaning Fibers    Fiber optic components and cables are very sensitive to dirt, dust and mishandling, especially in high- speed networks. Dirty or mistreated fiber may cause errors and an unwanted degradation of signal  qua
                    
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                          EM316-2SFP User Guide      3.5.2 Working with SFPs    The pluggable optics modules used in the EM316xx products are extremely portable, and  consequently may be easily mistreated. If SFPs are not protected against dust, remove the dust  caps and clean them with 1.25 millimeter cleaners.        Figure 11 -- SFP cleaners      3.5.2.1 Cleaning SFPs    (1) Requirements:    SFP to be cleaned  1.25 mm cleaners       (2) Procedure:    • Insert the 1.25mm cleaner into the SFP  • Turn ¼ turn  • Remove 
                    
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                          EM316-2SFP User Guide      3.5.2.2 Mylar Tab SFP Modules    The Mylar tab or nail latch on the module has a tab that you must pull in order to remove the  module from a switching module port.      Figure 12 -- Mylar Tab on SFP Module    (3) Inserting a Mylar Tab SFP Module    To insert the Mylar tab SFP module into a switching module port, line up the SFP module  with the port, and slide it into place        Figure 13 -- Insertion of a Mylar Tab SFP Module    (4) Removing a Mylar Tab SFP Modul
                    
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                          EM316-2SFP User Guide      3.5.2.3 Actuator/Button SFP Modules    The actuator/button SFP module has a button that you must push in order to remove the  SFP module from a switching module port.        Figure 15 – Actuator/Button SFP Module    3.5.2.4 Inserting an Actuator/Button SFP Module     To insert the actuator/button SFP module into a switching module port, line up the SFP  module with the port and slide it in until the actuator/button clicks into place. Be sure not to  press the actuato