Part Number
Port One - Twisted-Pair
Port Two - Coax
The Transition Networks J/E-CX-TBT-02
Ethernet media converter connects
10Base-T shielded or unshielded twisted-
pair copper cable to 10Base-2 coaxial
copper cable.
The J/E-CX-TBT-02 supports up to 24
daisy-chained devices on one coax
segment per twisted-pair segment.
User’s Guide
J/E-CX-TBT-02
Stand-Alone Media Converter
• Coax to twisted pair
• 10Base-2 to 10Base-T
Installation . . . . . . . . . . . . . . . . . . . . .2
Cable Specifications . . . . . . . . . . . . . .4
Technical Specifications . . . . . . . . . . .5
Troubleshooting . . . . . . . . . . . . . . . .6
Contact Us . . . . . . . . . . . . . . . . . . . .7
* Typical maximum cable distance. The actual maximum cable distances are dependent
upon the physical characteristics of the network installation.
J/E-CX-TBT-02 RJ-45, 10Base-T
100 m (328 ft)*
BNC, 10Base-2
185 m (610 ft)*
2
J/E-CX-TBT-02
24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
Power the media converter
NOTE: The external power supply provided with this product is UL listed by the
manufacturer.
Before you begin:
Only qualified technical personnel should install this media
converter.
1. Connect the barrel connector on the power adapter to the media converter’s
power port (located on the back of the media converter).
2. Plug the AC end of the power adapter into an appropriate AC power outlet.
3. Verify that the LED power indicator light is ON; if it is not, see the
Troubleshooting section in this manual.
Installation
Checklist
The box should contain the following:
• Converter
• AC/DC power converter
• T-Connector (for TP-BNC converter)
Contact your sales representative if any item is missing.
TP-BNC Converter LED Functions
LED description
Use the LEDs to monitor media converter operation in the network.
LED Color Function
BNC/Act Green Flashing = 10base-2 data traffic
TP/Act Green • ON = 10Base-T link connection
• Flashing = 10Base-T data traffic
Col (Collision) Amber Flashing = collision present
Pwr (Power) Green ON = connected to external power
PwrCal
TP
BNC
ACT
BNC Port
RJ-45 Port
3
[email protected] -- Click the “Transition Now” link for a live Web chat.
Installation -- continued
Install the coax cable
1. Install the coax T-connector and coax cable as shown below.
Install the 10Base-T cable
CAUTION: Set the MDI/MDI-X switch (located on the side of the converter) to MDI-X
(default) when connecting the J/E-CX-TBT-02 to a hub, switch, or router. Set the
switch to MDI when connecting to a terminal, transceiver, or NIC. Failure to observe
this caution will cause loss of data.
1. Locate or build 10Base-T compliant copper cables with male, 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
media converter, as shown below.
3. Connect the RJ-45 connector at the other end of the cable to the RJ-45 port on
the 10Base-T compliant device, as shown below.
MDI/MDI-X
MDI/MDI-X Switch
Coax
T-Connector
Terminator 50 Ω
Coax Cable
Media
Converter
Media
Converter
CAUTION: Ensure that the 10Base-2 coax cables are terminated properly at both
ends. In a coax thinnet installation, terminate the first and last device in the daisy-
chain with a 50 Ω terminator. Also, ensure that the 10Base-2 segment is grounded
to earth ground at a single point. Failure to observe this caution will cause data
transfer failures.
4
J/E-CX-TBT-02
24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
Cable Specifications
10Base-2 cable
Cable type: Stranded coaxial RG-58
Impedance: 50 Ω
Maximum cable distance: 185 m (610 ft.)
Minimum cable distance: 0.5 m (1.6 ft.)
Device placement along segment: 0.5 m intervals
Max length of any single series path: 3 segments and 2 links
Maximum number of connections: 30
10Base-T cable
Category 3 (minimum requirement)
Gauge: 24 to 22 AWG
Attenuation: 11.5 dB/100m @ 5-10 MHz
Maximum cable distance: 100 m (328 ft)
Category 5 (recommended)
Gauge: 24 to 22 AWG
Attenuation: 22.0 dB/100m @ 100 MHz Maximum
cable distance: 100 m (328 ft)
Cable considerations:
• Either straight-through or crossover cable can be used.
• Shielded (STP) or unshielded (UTP) twisted-pair cable can be used.
• Pins 1 and 2, 3 and 6 are the two active pairs in an Ethernet network.
• RJ-45 Pin-out: Pin 1 = TD+, Pin 2 = TD-, Pin 3 = RD+, Pin 6 = RD-
• Use only dedicated wire pairs for the active pins; e.g., blue/white and
white/blue, orange/white and white/orange, etc.
• Do not use flat or silver satin wire.
Crossover Cable
1
2
3
6
Straight-Through Cable
T
wisted Pair #1
Twisted Pair #1
Twisted Pair #2
T
wisted Pair #2
1
2
3
6
1
2
3
6
1
2
3
6
5
[email protected] -- Click the “Transition Now” link for a live Web chat.
Technical Specifications
For the Transition Networks Model J/E-CX-TBT-02 or equivalent.
Standards: IEEE 802.3
Dimensions: 1" x 2.75" x 3.7" (26 mm x 71 mm x 94 mm)
Weight: 6 oz (181 g) approximate
Data Rate: 10 Mb/s (half-duplex mode)
LEDs: BNC/Act, TP/Act, Col, Pwr
Power Supply: 100-240VAC 50/60 Hz, 1.0A @ 5VDC (The external
power supply provided with this product is UL listed
by the power supply’s manufacturer.)
MTBF: 49,000 hours (MIL217F2 V5.0) (MIL-HDBK-217F)
129,000 hours (Bellcore7 V5.0)
Operating Temp: 0°C to 50°C (32° F to 122° F )
Storage Temp: -20°C to 85°C (-4° F to 185° F )
Humidity: 10% to 90%, non-condensing
Warranty: Lifetime
Troubleshooting
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 PWR LED on the media converter illuminated?
NO
• Is the power cord properly installed in the media converter and at the
external power source?
• Does the external power source provide power?
• Contact Technical Support: U.S.A./Canada: 1-800-260-1312,
International: 00-1-952-941-7600.
YES
• Proceed to step 2.
2. Is the TP/ACT LED on the media converter illuminated or flashing?
NO
• Check twisted-pair 10Base-T cables for proper connection.
• Verify that the MDI/MDI-X switch is set correctly. See
MDI/MDI-X switch setting caution.
• Contact Technical Support
YES
• Proceed to step 3.
3. Is the TP/ACT LED on the media converter illuminated, but not
flashing?
NO
• Disconnect and reconnect the cable to restart the initialization process.
• Restart the workstation to restart the initialization process.
• Contact Technical Support.
YES
• Proceed to step 4.
4. Is the BNC/ACT LED turned ON?
NO
• Check 10Base-2 cables for proper connection.
• Verify that 10Base-2 cable connections on the media converter and on
the attached device are terminated properly.
• Disconnect and reconnect the cable to restart the initialization process.
• Restart the workstation to restart the initialization process.
• Contact Technical Support.
YES
• Contact Technical Support.
6
J/E-CX-TBT-02
24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
7
[email protected] -- Click the “Transition Now” link for a live Web chat.
Declaration of Conformity
Name of Mfg: Transition Networks
10900 Red Circle Drive, Minnetonka MN 55343 U.S.A.
Model: J/E-CX-TBT-02 Series Media Converters
Part Number(s): J/E-CX-TBT-02
Regulation: EMC Directive 89/336/EEC
Purpose: To declare that the J/E-CX-TBT-02 to which this declaration refers is in
conformity with the following standards.CISPR 22:1993; EN 55022:1998 Class A; FCC
part 15 subpart B
I, the undersigned, hereby declare that the equipment specified above conforms to the above
Directive(s) and Standard(s).
December, 2010
Stephen Anderson, Vice-President of Engineering Date
Contact Us
Technical support
Technical support is available 24 hours a day.
US and Canada: 1-800-260-1312
International: 00-1-952-941-7600
Transition now
Chat live via the Web with Transition Networks Technical Support.
Log onto
www.transition.com and click the Transition Now link.
Web-based seminars
Transition Networks provides seminars via live web-based training.
Log onto
www.transition.com and click the Learning Center link.
E-Mail
Ask a question anytime by sending an e-mail to our technical support staff.
Address
Transition Networks
10900 Red Circle Drive
Minnetonka, MN 55343, U.S.A.
Telephone: 952-941-7600
Toll free: 800-526-9267
Fax: 952-941-2322
Trademark notice
All registered trademarks and trademarks are the property of their respective owners.
Copyright restrictions
© 2001 - 2010 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.
Compliance Information
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 diesem Fäll ist der Benutzer für
Gegenmaßnahmen verantwortlich.
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.
Printed in the U.S.A. 33339.C
In accordance with European Union Directive 2002/96/EC of the European
Parliament and of the Council of 27 January 2003, Transition Networks will accept
post usage returns of this product for proper disposal. The contact information for
this activity can be found in the 'Contact Us' portion of this document.
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.
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