Page 1
COMPLIANCE INFORMATION
UL Listed
C-UL Listed (Canada)
CISPR/EN55022 Class A
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.
European Regulations
Warning
This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.
Achtung !
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes
Rundfunkstörungen auftreten, in weichen Fällen der Benutzer für entsprechende Gegenmaßnahmen
werantwortlich ist.
Attention !
Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des
interférences radioélectriques, il appartiendra alors à l’utilsateur de prende les measures spécifiques
appropriées
Trademark Notice
All registered trademarks and trademarks are the property of their respective owners.
Copyright Restrictions
© 2000 TRANSITION Networks.
All rights reserved. No part of this work may be reproduced or used in any form or by any means –
graphic, electronic, or mechanical – without written permission from TRANSITION Networks.
Printed in the U.S.A. 33155.C
CAUTION: RJ connectors are NOT INTENDED FOR CONNECTION TO THE
PUBLIC TELEPHONE NETWORK. Failure to observe this caution could result in
damage to the public telephone network.
Der Anschluss dieses Gerätes an ein öffentlickes Telekommunikationsnetz in den EG-Mitgliedstaaten
verstösst gegen die jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie 91/263/EWG zur
Angleichung der Rechtsvorschriften der Mitgliedstaaten über Telekommunikationsendeinrichtungen
einschliesslich der gegenseitigen Anerkennung ihrer Konformität.
The TRANSITION Networks E-TX-SX-02 series Fast Ethernet™ media converters
connect 10BASE-T or 100BASE-TX shielded or unshielded twisted-pair copper
cable to 850 nm 10/100BASE-SX multimode fiber-optic cable, using either an ST
fiber connector (E-TX-SX-02) or an SC fiber connector (E-TX-SX-02(SC)).
E-TX-SX-02
Provides an RJ-45 twisted pair
10BASE-T/100BASE-TX connector
and a set of RX (receive) and TX
(transmit) ST 10/100BASE-SX
connectors to 850 nm multimode
fiber-optic cable.
E-TX-SX-02(SC)
Provides an RJ-45 twisted pair
10BASE-T/100BASE-TX connector
and an RX (receive) and TX (transmit)
SC 10/100BASE-SX connector to 850
nm multimode fiber-optic cable.
The AutoCross™ feature allows either straight-through or crossover
twisted-pair copper cable to be used when connecting the E-TX-SX-02 to a
10/100BASE-TX device.
The Autonegotiation feature allows automatic speed and mode sensing
between the media converter and attached devices.
The LinkAlert™ feature allows the E-TX-SX-02 media converter to pass
10/100BASE-TX side link faults to the 10/100BASE-SX side and to pass
10/100BASE-SX side link faults to the 10/100BASE-TX side.
Minneapolis, MN 55344 USA
10/100BASE-TX to 10/100BASE-SX
Media Converters
E-TX-SX-02
USER’S GUIDE
E-TX-SX-02 in the Network 2
Installation 5
Operation 6
Fault Isolation and Correction8
Cable Specifications 10
Technical Specifications 11
Compliance Information 12
E-TX-SX-O2
10/100TX
10/100SX
10/100 TX-SX Media Converter
Twisted Pair to Fiber
Page 2
E-TX-SX-02 IN THE NETWORK
The E-TX-SX-02 media converter is designed to work effectively with
10/100 autonegotiating ports to provide reliable 10 Mbps or 100 Mbps
fiber links.
The E-TX-SX-02 receives and transmits network signals in either fullduplex or half-duplex mode, depending upon the network devices to
which the media converter is attached. Fast Ethernet
™
in full-duplex
mode allows the maximum cable distances shown on these pages. Fast
Ethernet
™
in half-duplex mode requires attention to the 512-bit Rule
(See page 4).
NOTE: Both copper AND fiber connections to the E-TX-SX-02 must be
at the same media-speed: 10BASE-T / 10BASE-FL or 100BASE-TX /
100BASE-SX OR one or both connections must be capable of autonegotiation.
Network Installation
Install two E-TX-SX-02 series media converters in series to extend, over
fiber, the distance between two 10BASE-T or 100BASE-TX devices:
TECHNICAL SPECIFICATIONS
Standards IEEE 802.3,
Compliant with pending TIA/EIA-785 specification
Case Dimensions 4.7" x 3.0" x 1.0" (102mm x 76mm x 25mm)
Shipping Weight 3 pounds (1.4 kilograms)
Environment Temperature: 0-40°C (32° to 104° F )
Storage Temperature: -15° to 65°C (5° to 149° F )
Humidity 10-90%, non condensing
Altitude 0-10,000 feet
Power Supply Requirements
Replace power supply only with the equivalent input
rating (see below) and output rating (regulated 12VDC at 1.5 A).
TN PN Requirement Location
3507 240 volts, 50 hertz United Kingdom
3342 230 volts, 50 hertz Europe
3518 120 volts, 60 hertz USA/Canada/Mexico
3346 100 volts, 50-60 hertz Japan
3511 240 volts, 50 hertz Australia
Warranty Lifetime
DECLARATION OF CONFORMITY
Name of Mfg: Transition Networks
6475 City West Parkway, Minneapolis MN 55344 USA
Model: E-TX-SX-02 Series Media Converters
Part Number(s): E-TX-SX-02, E-TX-SX-02(SC)
Regulation: EMC Directive 89/336/EEC
Purpose: To declare that the E-TX-SX-02 to which this declaration refers is in
conformity with the following standards.
EMC-CISPR 22: 1985 Class A; EN 55022: 1988 Class A; EN 50082-1:1992;
EN 60950 A4:1997; IEC 801.2, IEC 801.3, and IEC 801.4; IEC 950
I, the undersigned, hereby declare that the equipment specified above conforms to the
above Directive(s) and Standard(s).
_November 1, 1999_____
Stephen Anderson, Vice-President of Engineering Date
UTP/STP
Fiber
up to 300 meters - multimode
up to 100 meters
up to 100 meters
Page 3
CABLE SPECIFICATIONS
The physical characteristics of the media cable must meet or exceed IEEE 802.3
specifications.
Fiber Cable
MULTIMODE
Fiber Optic Cable Recommended: 62.5 / 125 µm multimode fiber
Optional: 100 / 140 µm multimode fiber
85 / 125 µm multimode fiber
50 / 125 µm multimode fiber
Wavelength : 850 nM
Attenuation: ≤3.75 dB/ 1 kilometer @ 850 nM
Fiber-optic Transmitter Power: min: -16.0 dBm max: -10.0 dBm
Fiber-optic Receiver Sensitivity: min: -29.50 dBm max: -7.2 dBm
Link Budget 13.5 dB
Typical Maximum Cable Distance:* Full-duplex: 300 meters
Half Duplex: See page 4
*Actual distance dependent upon physical characteristics of network installation.
Copper Cable
Category 5 twisted-pair copper wire is required. Either shielded twistedpair (STP) or unshielded twisted-pair (UTP) can be used. DO NOT USE
FLAT OR SILVER SATIN WIRE.
CATEGORY 5:
Gauge 24 to 22 AWG
Attenuation 22.0 dB /100m @ 100 MHz
Maximum Cable Distance: 100 meters
RJ-45 Pin-out:: Pin 1=TD+, Pin 2=TD-,
Pin 3=RD+, Pin 6=RD-
Twisted pair connection requires two active pairs configured as straight
through and/or crossover. The two active pairs in an Ethernet™ network
are pins 1 & 2 and pins 3 & 6. Use only dedicated wire pairs (such as
blue/white & white/blue, orange/white & white/orange) for the active pins.
Use the the E-TX-SX-02 media converter to extend the distance between a
10BASE-T or a 100BASE-TX terminal device and a 10BASE-FL or a
100BASE-SX (half-duplex only) hub, switch, or router:
Or use the the E-TX-SX-02 media converter to extend the distance between a
10BASE-T or a 100BASE-TX hub, switch, or router and a 10BASE-FL or a
100BASE-SX terminal device:
Crossover
1
2
3
6
Straight Through
Twisted Pair #1
Twisted Pair #1
Twisted Pair #2
Twisted Pair #2
1
2
3
6
1
2
3
6
1
2
3
6
UTP/STP
Fiber
up to 300 meters - multimode
up to 100 meters
SX Port OR FL Port
UTP/STP
Fiber
up to 300 meters - multimode
up to 100 meters
SX NIC OR FL NIC
Page 4
E-TX-SX-02 IN THE NETWORK (continued)
Media Converter in Full-Duplex Network
In a full-duplex network, maximum cable lengths are determined by the
cables used. See page 10 for cable specifications.
NOTE: The 512-Bit Rule described below does NOT apply in a full-duplex
network.
Media Converter in Half-Duplex Network
The 512-Bit Rule applies separately to each collision domain.
USING THE 512-BIT RULE
In a half-duplex network, maximum cable lengths are determined by the
round trip delay limitations of each Fast Ethernet
™ collision domain.
(Switches and routers divide the network into separate Ethernet™ collision
domains.) The 512-Bit Rule determines maximum distances by calculating
the collision domain round-trip delay in bit-times.
To calculate a collision domain roundtrip delay in bit-times, find the longest
path between any two terminal devices
in the collision domain. Calculate the
round trip delay by multiplying the
length of the cable (in meters) by the
delay per meter (in bit-times (BT)), then
take the sum of all cable delays plus station (DTE), repeater, and media
converter delays. If the result is less than or equal to 512 bit-times, the path is
good.
YES - QUICKLY
• The media converter has selected 100 Mb/s operation. If this is NOT
the correct speed, disconnect and reconnect the 10/100BASE-TX
cable to restart the initialization process. If the fault is not corrected,
proceed to step 6.
6. Is the 10/100TX ACT(ivity) LED illuminated?
NO
• If there is no activity on the 10/100BASE-TX port, proceed to step 7.
• If there is activity on the 10/100BASE-TX port, disconnect and
reconnect the 10/100BASE-TX cable to restart the initialization
process.
• Restart the workstation to restart the initialization process.
• Contact Technical Support: (800) 260-1312.
YES
• Proceed to step 7.
7. Is the 10/100SX ACT(ivity) LED illuminated?
NO
• If there is no activity on the 10/100BASE-SX port, continue below
• If there is activity on the 10/100BASE-SX port, disconnect and
reconnect the 10/100BASE-SX cable to restart the initialization
process.
• Restart the workstation to restart the initialization process.
• Contact Technical Support: (800) 260-1312.
YES
• Contact Technical Support: (800) 260-1312.
• Verify that TX and RX cables on media converter are connected to
RX and TX ports, respectively, on other device.
Class I repeater 140 BT
Class II repeater 92 BT
DTE (PC, switch, router) 50 BT
E-TX-SX-02 12 BT
1 meter CAT.5 TP cable 1.11 BT
1 meter fiber cable 1 BT
Fast Ethernet switch 50 BT
10 meters TP
@ 1.11BT/meter
= 11.1BT
10 meters TP
@ 1.11BT/meter
= 11.1BT
E-TX-SX-02
= 12BT
DTE= 50BT
Half-Duplex Collision Domain
Half-Duplex Collision Domain
200 meters fiber
@ 1.0 BT/meter
= 200BT
DTE= 50BT
50.00BT
+11.10BT
+12.00BT
+200.00BT
+12.00BT
+11.10BT
+50.00BT
__________
_
= 346.20BT
DTE= 50BT
10 meters TP
@ 1.11BT/meter
= 11.1BT
150 meters fiber
@ 1.0 BT/meter
= 150BT
10 meters TP
@ 1.11BT/meter
= 11.1BT
Class I
Hub
= 140BT
50.00BT
+11.10BT
+140.00BT
+150.00BT
+12.00BT
+11.10BT
+50.00BT
__________
_
= 424.20BT
Switch/
Router
= 50BT
E-TX-SX-02
= 12BT
Full-Duplex - NO Collision Domain
E-TX-SX-02
= 12BT
E-TX-SX-02
= 12BT
Page 5
FAULT ISOLATION and CORRECTION
If the media converter fails, isolate and correct the fault by determining the
answers to the following questions and then taking the indicated action:
1. Is the P(o)W(e)R LED on the media converter illuminated?
NO
• Is the power cord properly installed in the media converter and in
the grounded AC outlet?
• Does the grounded AC outlet provide power?
• Contact Technical Support: (800) 260-1312.
YES
• Proceed to step 2.
2. Does the 10/100TX STAT(us) LED blink ONCE and then go off?
YES
• Check twisted pair cables for proper connection.
• Contact Technical Support: (800) 260-1312.
NO
• Proceed to step 3.
3. Does the 10/100FX STAT(us) LED blink FIVE TIMES and then go
off?
YES
• 10Mb/s: Receive Pair has wrong polarity.
• 100Mb/s: Proceed to step 4.
NO
• Proceed to step 4.
4. Does the 10/100SX STAT(us) LED blink ONCE and then go off?
YES
• Check fiber cables for proper connection.
• Verify that TX and RX cables on media converter are connected to
RX and TX ports, respectively, on other device.
• Contact Technical Support: (800) 260-1312.
NO
• Proceed to step 5.
5. Is the 100 LED blinking?
NO
• The media converter has selected 10 Mb/s operation. If this is NOT
the correct speed, disconnect and reconnect the 10/100BASE-TX
cable to restart the initialization process. If the fault is not corrected,
proceed to step 6.
YES - SLOWLY
• The media converter is selecting between 10 Mb/s and 100 Mb/s
speed OR one or both of the links is down. IF PERSISTENT,
disconnect and reconnect either cable to restart the initialization
process. If the fault is not corrected, proceed to step 6.
INSTALLATION
Install Cable
COPPER
NOTE: AutoCross™ allows the use of either straight-through or crossover
configuration cables.
1. Locate or build 10BASE-T-compliant or 100BASE-TX-compliant
cables with male RJ-45 connectors installed at both ends.
2. Connect RJ-45 connector at one end of cable to media converter
RJ-45 port connector.
3. Connect RJ-45 connector at other end of cable to 10BASE-Tcompliant or 100BASE-TX-compliant device RJ-45 port
connector.
FIBER
1. Locate or build 10/100BASE-SX-compliant fiber cable with male
two-stranded TX to RX connectors installed at both ends.
2. Connect male TX and RX cable connectors at one end of cable to
TX and RX female connectors, respectively, on media converter.
3. Connect male TX and RX cable connectors at other end of cable to
10/100BASE-SX-compliant device RX and TX connectors,
respectively.
Connect to Power
1. At media converter side opposite cable connections, locate male
power receptacle.
2. Plug female end of media converter power cord into media
converter power receptacle.
3. Plug male end of power cord into correct voltage, properly
grounded, AC power source.
4. Verify that media converter is powered by observing illuminated
power and status LED(s).
TX
RX
TX
RX
Page 6
OPERATION
Using Status LEDs
Use the status LEDs to monitor media converter operation in the network.
100 Steady LED indicates 100 Mb/s
operation.
One (1) continuous, slowly flashing
blink indicates
speed selection in
progress.
One (1) continuous, quickly flashing
blink indicates 100 Mb/s operation
.
Po(W)e(R) Steady LED indicates connection to
external AC power.
STAT(us) (10/100TX) Steady LED indicates
normal operation.
One (1) continuous, flashing blink
indicates Link Down.
Five (5) continuous, flashing blinks
when the selected speed is 10 Mb/s
indicates that the receive pair has the
wrong polarity; five (5) continuous,
flashing blinks when the selected
speed is 100 Mb/s should be ignored.
ACT(ivity) (10/100TX) Flashing LED indicates
10/100BASE-TX activity.
STAT(us) (10/100SX) Steady LED indicates normal operation.
One (1) continuous, flashing blink indicates
Link Down.
ACT(ivity) (10/100SX) Flashing LED indicates 10/100BASE-SX activity.
Using AutoCross
™
*
The AutoCross™ feature allows either straight-through (MDI) or crossover
(MDI-X) cables to be used when connecting to 10BASE-T or to 100BASE-TX
devices, such as hubs, transceivers, or network interface cards (NICs).
AutoCross™ determines the characteristics of the cable connection and
automatically configures the unit to link up, regardless of the cable
configuration.
*Requires no operator intervention.
Using Autonegotiation*
The E-TX-SX-02 series media converter Autonegotiation feature allows the
media converter to be used with 10BASE-T, 100BASE-TX, 10BASE-FL and
100BASE-SX ports.
The media converter will bring up the link in the highest speed and mode
possible between the station and the device.
*Requires no operator intervention.
Using LinkAlert™
The E-TX-SX-02 series media converter LinkAlert™ feature allows the media
converter to pass 10/100BASE-TX-side link faults over the link to the
10/100BASE-SX side and to pass 10/100BASE-SX-side link faults over the link
to the 10/100BASE-TX side.
If the E-TX-SX-02 media converter does not detect a good link on the
10/100BASE-TX side, the E-TX-SX-02 disables all transmission (including
active-idle) on the 10/100BASE-SX side.
10/100BASE-TX
Device
Media Converter
LINK FAULT INDICATION
10/100BASE-SX
Device
10BASE-T
RX
TX
10/100TX
10/100SX
STAT
ACT
STAT
ACT
100
PWR
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