TP-Link NT TL-SM221B 100Base-BX WDM Bi-Directional SFP Module User Guide
- June 12, 2024
- tp-link
Table of Contents
TP-Link NT TL-SM221B 100Base-BX WDM Bi-Directional SFP Module
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 © 2008 TP-LINK TECHNOLOGIES CO., LTD. All rights reserved. http://www.tp-link.com
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 guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- 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 the user may be required to take adequate measures.
SAFETY NOTICES
- Do not use this product near water, for example, in a wet basement or near a swimming pool.
- Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.
Package Contents
The following items should be found in your package:
- Ten 100Base-BX WDM Bi-Directional SFP Modules
- Ten Static Shielding Bags
- 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 your distributor.
Introduction
TL-SM221 Series 100Base-BX WDM Bi-Directional SFP Module is a hot-pluggable 3.3V SFP (Small-Form-Factor) Bi-Directional transceiver module, which adopts WDM (Wavelength Division Multiplexing) technology that increases the information carrying capacity of fiber via multiplex transmit and receive signals at different wavelengths on single strand cable. It’s designed expressly for high-speed communication applications that require rates of up to 155Mbit/sec. It can effectively extend the diameter and bandwidth of the workgroup. TL-SM221 Series SFP Module can be installed inside the Switch which supplies power directly, it also can cooperate with TP-LINK products as the table below:
| SFP Module | Cooperated TP-LINK products |
|---|---|
| TL-SM221A TL-SM221B | TL-SG2216WEB Web Smart Gigabit Switch |
TL-SG2224WEB Web Smart Gigabit Switch
Note: If any abnormal status occurs when the light modules of the device are hot-switched between 1000Mbps and 100Mbps, please try to power on the device again.
Features of the product
- Single-mode WDM Bi-Directional SFP Module operates at 1550nm/1310nm
- Bi-Directional transmission with one fiber can save cost
- Single LC receptacle optical interface compliant
- The maximal transmission distance of a Single-mode WDM Bi-Directional SFP Module is 15km
- Hot-pluggable
- RoHS Compliant
- International Class 1 laser safety certified
Installation Guide
The following will take the installation procedure in the switch for example.
- Push the SFP Module into Switch along the track smoothly
- Plug fiber into the module, without any configuration manually, the SFP Module can work.
Warning:
- In order to avoid ESD (ElectroStatic Discharge), do not touch the output pins on the module with your hand.
- Avoid directly looking towards the output port of the light modules and never locate the working fiber pointing to the eyes, otherwise may cause injury to your eyes.
Specifications
| Normal | TL-SM221A | TL- SM221B |
|---|
Wave Length
| Tx:1550nm| Tx:1310nm
Rx:1310nm| Rx:1550nm
Standards and Protocols| IEEE 802.3ah 100Base-BX, CSMA/CD, TCP/IP
Cable| Single-mode Fiber
Fiber Type| 9/125 um Single-mode
Max. Cable Length| 15km
Data Rate| 155Mbps
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 Humidity| 5%~90% RH, Non-condensing
FAQ’s
What is the TP-Link NT TL-SM221B SFP module used for?
The TP-Link NT TL-SM221B is an SFP module designed for use in networking equipment to provide bi-directional data transmission over single-mode fiber optic cables.
What is WDM technology in the context of this SFP module?
WDM stands for Wavelength Division Multiplexing. It's a technology that allows multiple data streams to be transmitted simultaneously over a single fiber using different wavelengths of light.
Is the TP-Link NT TL-SM221B SFP module hot-swappable?
Yes, SFP modules like the TP-Link NT TL-SM221B are designed to be hot- swappable, meaning they can be inserted or removed from compatible devices without requiring a system shutdown.
What is the maximum transmission distance supported by the TL-SM221B SFP module?
The TL-SM221B typically supports transmission distances of up to 10 kilometers (6.2 miles) over single-mode fiber optic cables.
What wavelength does the TP-Link NT TL-SM221B SFP module use?
The TP-Link NT TL-SM221B uses a specific wavelength for transmission and another for reception, typically around 1310nm for transmission and 1550nm for reception (or vice versa).
What devices are compatible with the TP-Link NT TL-SM221B SFP module?
The TL-SM221B is compatible with a variety of networking equipment that supports SFP slots, such as switches, routers, and media converters.
Is this SFP module compatible with both single-mode and multi-mode fiber?
No, the TP-Link NT TL-SM221B is designed for use with single-mode fiber optic cables only.
What is the process of installing the TL-SM221B SFP module in a device?
Installing the module involves inserting it into a compatible SFP slot until it clicks into place. Ensure that the device is powered off during installation.
Does the TL-SM221B SFP module require any additional configuration after installation?
Generally, SFP modules are plug-and-play, so they often don't require specific configurations. However, some devices might need minor configuration adjustments for proper operation.
Can I use the TP-Link NT TL-SM221B SFP module for both single-mode and multi- mode networks?
No, this SFP module is specifically designed for use with single-mode fiber networks.
What kind of connectors are used with the TL-SM221B module?
The TL-SM221B SFP module likely uses LC connectors, which are common for single-mode fiber optic connections.
Can I use this SFP module for long-distance connections between different buildings?
Yes, the TL-SM221B is suitable for establishing reliable network connections over long distances, making it suitable for inter-building links.
Is the TL-SM221B compatible with Gigabit (1000 Mbps) networks?
No, the TL-SM221B is designed for Fast Ethernet (100 Mbps) networks.
Are there any specific environmental conditions to consider when using the TL- SM221B SFP module?
SFP modules are generally designed to operate within a specified temperature and humidity range. It's important to adhere to these conditions for optimal performance and longevity.
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