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                         User Guide 
TL-SM321A / TL-SM321B 
1000Base-BX WDM Bi-Directional SFP Module 
 
Rev:1.0.3 
7106503185                                                                                                                                                                                                                                                                                                                                                                                                              
                    
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                          COPYRIGHT & TRADEMARKS  Specifications are subject to change without notice.   is a registered trademark of TP-LINK  TECHNOLOGIES CO., LTD. Other brands and product names  are trademarks or registered trademarks of their respective  holders.  No part of the specifications may be reproduced in any form or by  any means or used to make any derivative such as translation,  transformation, or adaptation without permission from TP-LINK  TECHNOLOGIES CO., LTD. Copyright © 2009 TP-LINK  TECHNOLOGIES 
                    
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                          FCC STATEMENT    This equipment has been tested and found to comply with the  limits for a Class B digital device, pursuant to part 15 of the  FCC Rules. These limits are designed to provide reasonable  protection against harmful interference in a residential  installation. This equipment generates, uses and can radiate  radio frequency energy and, if not installed and used in  accordance with the instructions, may cause harmful  interference to radio communications. However, there is no  guar
                    
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                          is subject to the following two conditions:  1) This device may not cause harmful interference.  2) This device must accept any interference received,  including interference that may cause undesired  operation.  Any changes or modifications not expressly approved by the  party responsible for compliance could void the user’s  authority to operate the equipment.  CE Mark Warning    This is a class B product. In a domestic environment, this  product may cause radio interference, in which case t
                    
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                          CONTENTS  Package Contents.................................................................... 1  Chapter 1. Introduction ...................................................... 1  Chapter 2. Features of the product................................... 3  Chapter 3. Installation Guide............................................. 3  Specifications .......................................................................... 4                                                                            
                    
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                          Package Contents  The following items should be found in your package:   1000Base-BX WDM Bi-Directional SFP Module   Static Shielding Bag   This User Guide  Note:     Make sure that the package contains the above items. If any of  the listed items are damaged or missing, please contact with  your distributor.  Chapter 1. Introduction  TL-SM321 Series 1000Base-BX WDM Bi-Directional SFP  Module is a hot pluggable 3.3V SFP (Small-Form-Factor)  Bi-Directional transceiver module, which adopts WDM  
                    
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                            SFP Module Cooperated TP-LINK products  Managed Gigabit Switch  TL-SG3109  TL-SL3428  TL-SL3452  Web Smart Gigabit Switch  TL-SG2109WEB  TL-SG2216WEB  TL-SG2224WEB  TL-SL2210WEB  TL-SM321A    TL-SL2218WEB  TL-SM321B   TL-SL2428WEB  TL-SL2452WEB  Unmanaged Gigabit-Uplink Switch  TL-SL1351  SMB Broadband Router  TL-R4199G  TL-R4299G  Gigabit Media Converter  MC220L     Note: If any abnormal status occurs when the light modules of the  device are hot-switched between 1000Mbps and 100Mbps,  plea
                    
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                          Chapter 2. Features of the product   Single-mode WDM Bi-Directional SFP Module operate at  1550nm/1310nm   Bi-Directional transmit with one fiber which can save cost   Single LC receptacle optical interface compliant   The maximal transmission distance of Single-mode WDM  Bi-Directional SFP Module is 10km   Hot-pluggable   RoHS Compliant   International Class 1 laser safety certified  Chapter 3. Installation Guide  The following will take the installation procedure in the switch for  example. 
                    
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                          Specifications    Normal TL-SM321A TL-SM321B  Tx:1550nm Tx:1310nm  Wave Length  Rx:1310nm Rx:1550nm  IEEE 802.3ah 1000Base-BX,  Standards and Protocols  CSMA/CD, TCP/IP  Cable Single-mode Fiber  Fiber Type 9/125 um Single-mode  Max. Cable Length 10km  Data Rate 1.25Gbps  Port Type LC  Power Support 3.3V  Safety & Emission FCC, CE    Environmental and Physical  Operating Temp. 0 ℃~70 ℃ (32 ℉~158 ℉)  Storage Temp. -40 ℃~80 ℃ (-40 ℉~176 ℉)  Operating Humidity 10%~90% RH, Non-condensing  Storage H