Transition Networks J-FE-CF-03 User Manual
USER’S GUIDE
J/FE-CF-03
Stand-Alone media converter
• Fast Ethernet™
• Copper to Fiber
• 100Base-TX to 100Base-FX
Transition Networks J/FE-CF-03 Fast
Ethernet™ media converter connects 100
Mb/s twisted-pair copper cable to a duplex
100 Mb/s fiber-optic cable.
Use the J/FE-CF-03 series media converter
(or up to two media converters in series)
to extend over fiber, the distance between two 100BASE-TX devices (hub, switch,
workstation, etc.).
Part Number Port One - Copper Port Two - Duplex Fiber-Optic
J/FE-CF-03 RJ-45, 100Base-TX
100 m (328 ft)*
J/FE-CF-03(SC) RJ-45, 100Base-TX
100 m (328 ft)*
J/FE-CF-03(SM) RJ-45, 100Base-TX
100 m (328 ft)*
J/FE-CF-03(LH) RJ-45, 100Base-TX
100 m (328 ft)*
ST, 100Base-FX, 1300 nm multimode
2 km (1.2 miles)*
SC , 100Base-FX, 1300 nm multimode
2 km (1.2 miles)*
SC, 100Base-FX, 1300 nm singlemode
20 km (12.4 miles)*
SC, 100Base-FX, 1300 nm singlemode
40 km (24.9 miles)*
Single Fiber Optic (install as a pair)
Part Number Port One - Copper Port Two - Duplex Fiber-Optic
J/FE-CF-03-100 RJ-45, 100Base-TX
100 m (328 ft)*
J/FE-CF-03-101 RJ-45, 100Base-TX
100 m (328 ft)*
Note: Install the J/FE-CF-03-100 and the J/FE-CF-03-101 in the same network as local
and remote peers.
*Typical maximum cable distance. Actual distance is dependent upon the physical
characteristics of the network installation.
SC, 1310 mn TX/1550 nm RX, 20 km
(12.4 miles)*
SC, 1550 mn TX/1310 nm RX, 20 km
(12.4 miles)*
Installation . . . . . . . . . . . . . . . . . . . . .2
Operation . . . . . . . . . . . . . . . . . . . . . .5
Cable Specifications . . . . . . . . . . . . .6
Technical Specifications . . . . . . . . . .7
Troubleshooting . . . . . . . . . . . . . . . .8
Contact Us . . . . . . . . . . . . . . . . . . . . .9
Compliance Information . . . . . . . . .11
J/FE-CF-03
Options Accessories (sold separately)
Part Number Description
WMBS Optional Wall Mount Brackets
Length: 3.2 in. (81 mm), Fits converter length: 3.9 in. (99 mm)
SPS-1872-SA Optional External Power Supply; 18-72VDC Stand-Alone Wide-Input;
Output: 12.6VDC, 1.0 A
SPS-1872-CC Optional External Power Supply; 18-72VDC Piggy-Back Wide-Input;
Output: 12.6VDC, 1.0 A
Installation
Installing the Cable
Fiber
1. Locate or build 100Base-FX compliant fiber cable with male, two-stranded TX
to RX connectors installed at both ends.
2. Connect the fiber cables to J/FE-CF-03 media converter as described:
• Connect the male TX cable connector the female TX port.
• Connect the male RX cable connector to the female RX port.
3. Connect the fiber cables to the other device (another media converter, hub,
etc.) as described:
• Connect the male TX cable connector the female RX port.
• Connect the male RX cable connector to the female TX port.
Installation -- Continued
Copper
1. Locate or build 100Base-TX 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
J/FE-CF-03 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.).
Set the Two-Position Switch
A two-position switch (located on the back of the media monverter) allows
selection of Auto-Negotiation and Full- or Half-Duplex. Use a small, flat-blade
screwdriver (or a similar device) to set the switch according to the site requirements
see the drawing below.
Auto-Negotiation:
UP Enable Auto-Negotiation
DOWN Disable Auto-Negotiation
Full/Half Duplex:
UP Full Duplex -- Advertises 100 Mb/s full-duplex only during Auto-
Negotiation.
DOWN Half Duplex -- Used primarily when connecting to a hub. Operates at
100 Mb/s in duplex mode of the attached device.
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24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
techsupport@transition.com -- Click the “Transition Now” link for a live Web chat.
Auto-Negotiation - UP=Enable
Full/Half Duplex - UP=Full
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J/FE-CF-03
Installation -- Continued
Power the media converter
AC power:
1. Install the power adapter cord to the back of the media converter.
2. Connect the power adapter plug to AC power.
3. Verify that the media converter is powered by observing the illuminated LED
power indicator light.
DC power:
Consult the User’s Guide for the Transition Networks SPS1872-xx DC External
Power Supply for powering the media converter.
Operation
Using status LEDs
Use the status LEDs to monitor the media converter operation in the network.
Power Steady LED indicates connection to external AC power.
Fiber Steady LED indicates fiber link connection.
Copper Steady LED indicates copper link connection.
RX
TX
Fiber
100Base-FX
Auto-Negotiation
The Auto-Negotiation feature allows the media converter to be used with 100BaseTX ports. Using Auto-Negotiation, the media converter brings up the copper links
in the highest speed and mode possible for all attached network devices.
Full-Duplex network
In a full-duplex network, maximum cable lengths are determined by the type of
cables that are used. See page 1 (front cover) for the cable specifications for the
different J/FE-CF-03 models. (The 512-Bit Rule does not apply in a full-duplex
network.)
Power
Copper
100Base-TX
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24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
Half-Duplex network (512-Bit Rule)
In a half-duplex network, the maximum cable lengths are determined by the round
trip delay limitations of each Fast Ethernet™ collision domain. (A collision domain
is the longest path between any two terminal devices, e.g. a terminal, switch, or
router.)
The 512-Bit Rule determines the maximum length of cable permitted by calculating
the round-trip delay in bit-times (BT) of a particular collision domain. If the result
is less than or equal to 512 BT, the path is good.
For more information on the 512-Bit Rule, see the white paper titled “Collision
Domains” on the Transition Networks website at:
http://www.transition.com/learning/whitepapers/colldom_wp.htm
techsupport@transition.com -- Click the “Transition Now” link for a live Web chat.
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