Lantronix M/E-TX-FX Series User manual

M/E-TX-FX Series
Mini Fast Ethernet Media Converters
User Guide
Part Number 33517
Revision C January 2023

M/E-TX-FX Series User Guide 2
Intellectual Property
© 2022, 2023 Lantronix, Inc. All rights reserved. No part of the contents of this publication may be
transmitted or reproduced in any form or by any means without the written permission of Lantronix.
Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries. All other
trademarks and trade names are the property of their respective holders.
Patented: patents.lantronix.com; additional patents pending.
Warranty
For details on the Lantronix warranty policy, go to http://www.lantronix.com/support/warranty.
Contacts
Lantronix Corporate Headquarters
48 Discovery, Suite 250
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
https://www.lantronix.com/technical-support/
Sales Offices
For a current list of our domestic and international sales offices, go to www.lantronix.com/about/contact.
Disclaimer
All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to update the
information in this publication. Lantronix does not make, and specifically disclaims, all warranties of any
kind (express, implied or otherwise) regarding title, non-infringement, fitness, quality, accuracy,
completeness, usefulness, suitability or performance of the information provided herein. Lantronix shall
have no liability whatsoever to any user for any damages, losses and causes of action (whether in
contract or in tort or otherwise) in connection with the user’s access or usage of any of the information or
content contained herein. The information and specifications contained in this document are subject to
change without notice.
Revision History
Date
Rev.
Notes
04/11/13
A
Initial release.
6/7/21
B
Add PEM and update specs and certifications.
1/9/23
C
Initial Lantronix rebrand release.

M/E-TX-FX Series User Guide 3
Table of Contents
Revision History____________________________________________________________ 2
Table of Contents __________________________________________________________ 3
1Introduction 4
Product Description _________________________________________________________ 4
Ordering Information ________________________________________________________ 4
Features__________________________________________________________________ 5
Technical Specifications _____________________________________________________ 5
2Installation 7
Checklist _________________________________________________________________ 7
Observe ESD Precautions____________________________________________________ 7
Copper and Fiber Ports ______________________________________________________ 7
Connect the Fiber Cable _____________________________________________________ 8
Connect the Twisted-pair Copper Cable _________________________________________ 9
Power Warnings ___________________________________________________________ 9
Power Supply Included ______________________________________________________ 9
Power up the Media Converter _______________________________________________ 10
Power Adapter ____________________________________________________________ 10
AC Power____________________________________________________________________________________________10
DC Power____________________________________________________________________________________________10
3Operation 11
Status LEDs______________________________________________________________ 11
Feature Descriptions _______________________________________________________ 11
Auto-Negotiation ___________________________________________________________________________________11
2AutoCross ___________________________________________________________________________________________11
Automatic Link Restoration _______________________________________________________________________11
Far-End Fault (Always ON) ________________________________________________________________________11
Cable Specifications _______________________________________________________ 11
Fiber Optics _________________________________________________________________________________________12
Copper Cable________________________________________________________________________________________12
4Troubleshooting 13
Contact Us _______________________________________________________________ 13
Compliance Information_____________________________________________________ 14
Declaration of Conformity _________________________________________________________________________14
FCC Regulations ____________________________________________________________________________________14
Canadian Regulations ______________________________________________________________________________14

1: Introduction
M/E-TX-FX Series User Guide 4
1 Introduction
Product Description
Lantronix M/E-TX series of Fast Ethernet stand-alone Mini media converters provide cost effective media
conversion between 100Base-TX ports and 100Base-FX ports. With its fixed configuration, deployments are
just plug-and-play, and its small size makes it ideal for locations where space is limited. Operating at Layer
1, the physical layer, data is passed through the converter at line speed, making it ideal for applications
where low latency is essential.
Ordering Information
Part Number
Description
M/E-TX-FX-01
100Base-TX (RJ-45) [100m/328 ft.]* to 100Base-FX 1300nm multimode (ST)
[2km/1.2mi.]* Link Budget: 11.0db
M/E-TX-FX-01(SC)
100Base-TX (RJ-45) [100m/328 ft.]* to 100Base-FX 1300nm multimode (SC)
[2km/1.2mi.]* Link Budget: 11.0db
M/E-TX-FX-01(SM)
100Base-TX (RJ-45) [100m/328 ft.]* to 100Base-FX 1310nm single mode (SC)
[20km/12.4mi.]* Link Budget: 16.0db
M/E-TX-FX-01(SFP)
100Base-TX (RJ-45) [100m/328 ft.]* to 100Base-X SFP Slot (empty)
Optional Accessories (sold separately)
SFP Modules
See the Lantronix SFP Products webpage
SPS-2460-SA
24VDC to 60VDC input Stand-alone Power Supply
WMBM
Wall Mount Bracket for Mini
M-MCR-01
18-Slot Powered Mini Chassis
DRBM
DIN Rail Mount Bracket for Mini
RMBM
Rack Mount Bracket for Mini; use with RMS19-SA4-02 and/or E-MCR-05
* Typical maximum cable distance; actual distance depends on the physical characteristics of the network.
Longer transmission distances, bi-directional transmissions, and CWDM technology are all supported via
specific SFP modules.
M/E-TX-FX-01
M/E-TX-FX-01(SC)
M/E-TX-FX-01(SM)
M/E-TX-FX(SFP)

1: Introduction
M/E-TX-FX Series User Guide 5
Features
•Fiber integration used in pairs or as a single unit, this mini media converter will ease the integration of
fiber optic cabling into copper-rich Fast Ethernet environments
•Extend Network Distance as fiber supports the transmission of Fast Ethernet data over much longer
distances than possible twisted pair
•Low-Latency Layer 1 Design; this mini converter will retransmit Fast Ethernet signals without any
store-and–forward packet inspection delays found in other Layer 2 devices
•Small Size is ideal for conversion locations where available space is limited - 65% smaller than
standard media converters
•Unit and port LEDs allow for quick status information
•Auto-Negotiation and Auto-MDI/MDIX
Technical Specifications
Standards IEEE 802.3u, 100Base-TX, 100Base-FX
Status LEDs PWR (Power) below RJ-45: On = Power
FX-Link/Act (Fiber Link / Activity) Upper Left on RJ-45:
On = link, Flashing = Activity
TX-Link/Act (Copper Link / Activity) Upper Right on
RJ-45: On = link, Flashing = Activity
Dimensions Width: 1.8” [46 mm] x Depth: 3.3” [85 mm] x Height: 0.85 [22 mm]
Power Consumption 2.6 Watts
Power sources: Barrel connector – Wall Mount AC power adapter 12VDC 400mA (the external
power supply provided with this product is UL listed and C-UL listed Canada by
the manufacturer).
Power Supply External AC/DC required; +12VDC, 0.5A
Power Input 7.5VDC to 13.9VDC
Environment Operating: 0°C to 50°C
Storage: -15°C to 65°C
Humidity: 5% to 95% (non-condensing)
Altitude: 0 – 10,000 ft.
Weight 2 lbs. [0.90 kg]
MTBF 41,680 hours (MIL-HDBK-217F)
114,580 hours (Bellcore7 V5.0)
Certifications Wall Mount Power Supply, UL Listed, cUL Listed (Canada)
Regulatory Compliance for Emission FCC Class A; EN55022 Class A
Regulatory Compliance for Immunity EN55024,
Safety Compliance Unit: CE Mark
Warranty Lifetime
WARNING: If the media converter is an IEEE802.3-2005 Powered Device (PD) capable of receiving
power via the Media Dependent Interface (MDI) leads, the power source, connector, and cable attached
to the barrel power connector must meet the isolation requirement specified in IEEE802.3-2005. Failure to
observe this warning could result in an electrical shock.

1: Introduction
M/E-TX-FX Series User Guide 6
CAUTION: Copper based media ports, e.g., Twisted Pair (TP) Ethernet, USB, RS232, RS422, RS485,
DS1, DS3, Video Coax, etc., are intended to be connected to intrabuilding (inside plant) link segments that
are not subject to lightening transients or power faults. These Copper-based media ports are NOT to be
connected to interbuilding (outside plant) link segments that are subject to lightening transients or power
faults. Failure to observe this caution could result in damage to equipment.
WARNING: Visible and invisible laser radiation when open. Do not stare into the beam or view directly
with optical instruments. Failure to observe this warning could result in an eye injury or blindness.
WARNING: Use of controls, adjustments, or the performance of procedures other than those specified
herein could result in hazardous radiation exposure. The information in this user guide is subject to
change.

2: Installation
M/E-TX-FX Series User Guide 7
2 Installation
Checklist
Make sure you have received the following items. Contact your sales representative if any item is missing
or damaged. Please save the packaging for possible future use.
•One M/GE-PSW-SFP-01 Media Converter
•One documentation postcard
•One country- specific power supply
M/E-TX-FX-01
Observe ESD Precautions
Always observe the following ESD (Electrostatic Discharge) precautions when installing or handing the
media converter:
•Do not remove the converter from its protective packaging until you are ready to install it.
•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.
Copper and Fiber Ports
The figure below shows the front panel of the M/E-TX-FX-01 media converters.

2: Installation
M/E-TX-FX Series User Guide 8
Connect the Fiber Cable
Full duplex (always ON) is on the fiber side only; therefore, the 512-Bit Rule does not apply. The cable
lengths are constrained by the cable requirement.
1. Locate or build IEEE 803.2 compliant 100 Base-X fiber cable with male, two-stranded TX to RX
connectors installed at both ends.
2. Connect the fiber cable to the M/E-TX-FX-01 media converters as follows:
•Connect the male TX cable connector to the female TX port.
•Connect the male RX cable connector to the female RX port.
3. Connect the fiber cable to the other device (another media converter, hub, etc.) as follows:
•Connect the male TX cable connector to the female RX port.
•Connect the male RX cable connector to the female TX port.

2: Installation
M/E-TX-FX Series User Guide 9
Connect the Twisted-pair Copper Cable
The AutoCross feature allows either MDI (straight-through) or MDI-X (crossover) cable connections to be
configured automatically, according to network conditions.
If full-duplex mode is used, the 512-Bit Rule does not apply. The cable lengths are constrained by the
cable requirements.
Perform these steps:
1. Locate or build IEEE 803.2™compliant 100Base-TX cable, with RJ-45 connectors installed at both
ends.
2. Connect the RJ-45 connector at one end of the cable to the RJ-45 port on the M/E-TX-FX-01 media
converter.
3. Connect the RJ-45 connector at the other end of the cable to the RJ-45 port on the other device
(switch, workstation, etc.).
Power Warnings
WARNING: If the media converter is an IEEE802.3-2005 Powered Device (PD) capable of receiving
power via the Media Dependent Interface (MDI) leads, the power source, connector, and cables attached
to the barrel power connector must meet the isolation requirement specified in IEEE 802.3-2005.
Power Supply Included
To order the corresponding country- specific power supply, add the extension from the list below to
the end of the SKU. For example: M/E-TX-FX01-NA = North America, -LA = Latin America, -EU = Europe,
-UK = United Kingdom, -SA = South Africa, -JP = Japan, -OZ = Australia, and -BR = Brazil.

2: Installation
M/E-TX-FX Series User Guide 10
Power up the Media Converter
The figure below shows the power connector.
M/E-TX-FX-01 and M/E-TX-FX-01(SFP) Back Panel Power
Power Adapter
AC Power
1. Connect the barrel connector of the power adapter to the media converter’s power port (located on the
back panel of the media converter).
2. Connect the power adapter plug to AC power.
3. Verify that the media converter is powered up by observing the lit power indicator LED on the front
panel.
DC Power
See the Lantronix SPS-2460-SA DC external power supply user guide for powering the media converter.

3: Operation
M/E-TX-FX Series User Guide 11
3 Operation
Status LEDs
Use the LEDs to monitor the status of the media converter.
FX-Link/Act LED
Green ON = Link (fiber)
Flashing = Activity
TX-Link/Act LED
Green ON = Link
Flashing = Activity
Power LED ON = Connected to power
Feature Descriptions
Auto-Negotiation
The Auto-Negotiation feature is ON permanently for the M/E-TX-FX-01 media converters. Auto-
Negotiation allows the media converter to configure itself automatically to achieve the best possible mode
of operation over a link. It broadcasts speed (100 Mbps) and duplex capabilities (full) to the other device
and negotiates the best mode of operation. Auto-Negotiation allows quick and easy installation because
the optimal link is established automatically.
In a scenario where an auto-negotiation device is linked to a non-negotiating device, the negotiating
device via parallel detection recognizes the speed of the second device then establishes the best
operating speed (100 Mbps).
2AutoCross
The AutoCross feature allows using either straight-through (MDI) or crossover (MDI-X) copper cables
when connecting to 100Base-TX devices. AutoCross determines the characteristics of the connection and
automatically configures the device to link up, regardless of the copper cable configuration (MDI or MDI-
X).
Automatic Link Restoration
The media converter will automatically re-establish the link when connected to a switch if the link is lost,
even with Auto-Negotiation enabled.
Far-End Fault (Always ON)
When a fault occurs on an incoming fiber link, the media converter transmits a Far-End Fault signal on the
outgoing fiber link.
Cable Specifications
Cable physical characteristics must meet or exceed IEEE 802.3™specifications.

3: Operation
M/E-TX-FX Series User Guide 12
Fiber Optics
Bit Error Rate: <10-9
Single mode fiber (recommended): 9 μm
Multimode fiber (recommended): 62.5/125 μm
Multimode fiber (optional): 100/140, 85/140, 50/125 μm
M/E-TX-FX-01 (SC) 1300 nm multimode
Fiber Optic Transmitter Power: min: -19.0 dBm max: -14.0 dBm
Fiber Optic Receiver Sensitivity: min: -30.0 dBm max: -14.0 dBm
Link Budget: 11.0 dB
M/E-TX-FX-01 (SM) 1310 nm single mode
Fiber-optic Transmitter Power: min: -15.0 dBm max: -8.0 dBm
Fiber-optic Receiver Sensitivity: min: -31.0 dBm max: -8.0 dBm
Link Budget: 16.0 dB
The fiber optic transmitters on this device meet Class I Laser safety requirements per IEC825/CDRH
standards and comply with 21 CFR1040.10 and 21CFR1040.11.
Copper Cable
Category 5: (Minimum requirement for 100 Mb/s operation)
Gauge 24 to 22 AWG
Attenuation 22.0 dB /100m @ 100 MHz
Maximum Cable Distance 100 meters
•Straight-through or crossover twisted-pair cable may be used.
•Shielded (STP) or unshielded (UTP) twisted-pair cable may be used.
•Pins 1&2 and 3&6 are the two active pairs in an Ethernet network.
•Use only dedicated wire pairs for the active pins:
(e.g., blue/white & white/blue, orange/white & white/orange, etc.)
•Do not use flat or silver satin wire.

4: Troubleshooting
M/E-TX-FX Series User Guide 13
4 Troubleshooting
If the media converter fails, isolate and correct the failure by determining the answers to the following
questions, and then taking the indicated action:
1. Is the power LED lit and did the TX and FX LEDs turn ON and then turn OFF?
NO
• Is the device powered by an adapter?
• Is the power adapter the proper type of voltage and cycle frequency for the AC outlet?
• Is the power adapter properly installed in the media converter and in the AC outlet?
• Contact Technical Support: See Contact Us below.
YES
Proceed to step 2.
Note: The M/E-TX-FX-01 (no link pass-through option), the TX LED will turn ON when the twisted pair
copper cable is installed; the FX LED will turn ON when the fiber cable is installed.
2. Are the TX and FX-Link/ACT LEDs lit on the RJ-45 port?
NO
• Check the copper cables for proper connection.
• Check the fiber cables for proper connection.
• Contact Technical Support: See Contact Us below.
YES
Contact Technical Support: See Contact Us below.
Contact Us
•Lantronix website : https://www.lantronix.com
•Tech Support : [phone], Tel: [phone], or
https://www.lantronix.com/technical-support/
•Contact Us : https://www.lantronix.com/about-us/contact/
•Warranties : Lantronix Limited Warranty Policy, Extended Warranties
Note that this manual may provide links to third party websites for which Lantronix is not responsible.

4: Troubleshooting
M/E-TX-FX Series User Guide 14
Compliance Information
Declaration of Conformity
Manufacture’s Name: Lantronics, Inc.
Manufacture’s Address: 48 Discovery, Suite 250, Irvine, California 92618 USA
Declares that the product(s)
Media Converters M/E-TX-FX-01 and M/GE-R-xxx-01
Model #s: M/E-TX-FX-01, M/E-TX-FX-01(SC), M/E-TX-FX-01(SM), M/E-TX-FX-01(SFP), and
M/GE-T-SX-01, M/GE-T-LX-01, M/GE-T-SFP-01
Conform to the following Product Regulations:
FCC 47 CFR Part 15: 2012 Class A
ANSII C63.4:2009
EMC-Directive 2004/108/EC
EN 55022:2010 Class A
EN 61000-3-2:2006/A1:2009/A2:2009, EN 61000-3-3:2008
EN55024:2010
IEC61000-4-2:2008, IEC61000-4-3:2006/A2:2010, IEC61000-4-4:2004, IEC61000-4-5:2005,
IEC61000-4-6:2008, IEC61000-4-8:2009, IEC61000-4-11:2004
With the technical construction on file at the above address, this product carries the CE Mark
I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s)
and Standard(s).
Place: Irvine, California
Date: April 27, 2022
Signature: Fathi Hakam
Full Name: Fathi Hakam
Position: Vice President of Engineering
FCC Regulations
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which case the
user will be required to correct the interference at the user's own expense.
Canadian Regulations
This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on
the radio interference regulations of the Canadian Department of Communications.
Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la Class A prescrites dans le Règlement sur le brouillage radioélectrique édicté
par le ministère des Communications du Canada.

4: Troubleshooting
M/E-TX-FX Series User Guide 15
Lantronix Corporate Headquarters
48 Discovery
Suite250
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
https://www.lantronix.com/technical-support/.
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
www.lantronix.com/about/contact.