Transition Networks CBFTF10xx-1xx User manual

33403 Rev. E https://www.transition.com Page 1 of 15
User Guide
CBFTF10xx-1xx
Slide-in-Module Media Converter
•Extend network distance up to 120 km with an SFP module
•Convert 10/100 on copper to straight 100 on fiber
•Half or Full-Duplex on both ports
•Fully manageable
•Auto-Negotiation and AutoCross™
•Link Pass Through (LPT) and Far-End-Fault (FEF)
•Automatic Link Restoration
•Field Upgradeable Firmware
•Can be used with any Point System™ Chassis
•Bridging media converters provide conversion and integration solutions for half- and full-duplex environments
Contents
Introduction .................................................................................................................................................. 1
Ordering Information.................................................................................................................................... 2
DIP Switch and Jumper Locations............................................................................................................. 3
Installation .................................................................................................................................................... 3
Set 6-position DIP Switch (SW2)............................................................................................................... 4
Hardware/Software Mode Jumper (J4).................................................................................................... 5
Install the Slide-in-Module ....................................................................................................................... 5
Install the Twisted-Pair Copper Cable ...................................................................................................... 6
Install the Fiber Cable ............................................................................................................................... 6
Operation...................................................................................................................................................... 7
Status LEDs ............................................................................................................................................... 7
Product Features ...................................................................................................................................... 8
Cable Specifications................................................................................................................................10
Technical Specifications ..............................................................................................................................12
Troubleshooting..........................................................................................................................................13
Contact Us................................................................................................................................................... 14
Compliance Information .............................................................................................................................14
Declaration of Conformity ......................................................................................................................14
CE Mark................................................................................................................................................... 14
Record of Revisions.....................................................................................................................................15
Introduction
Transition Networks CBFTF10xx-10x two-port Ethernet/Fast Ethernet bridging media converter connects
10Base-T Ethernet or 100Base-TX Fast Ethernet twisted-pair copper network devices to network devices
on a 100Base-FX Fast Ethernet fiber network.
The CBFTF10xx-10x provides an interface between 10/100Base-TX ports and 100Base-FX ports, allowing
you to integrate fiber optic cabling into 10/100Base-TX copper environments. Operating at Layer 2, this
converter not only converts copper to fiber, but it also does Rate Conversion, converting 10/100 copper
to 100Base fiber.

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Ordering Information
SKU
Description
CBFTF1011-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to
100BASE-FX 1300nm MM (ST) [2 km/1.2 mi.] Link Budget: 11.0 dB
CBFTF1013-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to
100BASE-FX 1300nm MM (SC) [2 km/1.2 mi.] Link Budget: 11.0 dB
CBFTF1039-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to
100BASE-FX 1300nm MM (LC) [2 km/1.2 mi.] Link Budget: 11.0 dB
CBFTF1014-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to
100BASE-FX 1310nm SM (SC) [20 km/12.4 mi.] Link Budget: 16.0 dB
CBFTF1019-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to
100BASE-FX 1310nm SM (LC) [20 km/12.4 mi.] Link Budget: 17.3 dB
CBFTF1040-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to 100BASE-X SFP Slot (empty)
Single Fiber
Products
Recommended use in pairs
CBFTF1029-105
10/100BASE-TX (RJ-45) [100 m/328 ft.] to 100BASE-FX 1310nm TX/1550nm RX
single fiber SM (SC) [20 km/12.4 mi.] Link Budget: 19.0 dB
CBFTF1029-106
10/100BASE-TX (RJ-45) [100 m/328 ft.] to 100BASE-FX 1550nm TX/1310nm RX
single fiber SM (SC) [20 km/12.4 mi.] Link Budget: 19.0 dB
*Typical maximum cable distance. Actual distance is dependent upon the physical characteristics of the
network installation.
** CBFTF1029-105 and CBFTF1029-106 are intended to be installed in the same network where one is
the local converter and the other is the remote converter.

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DIP Switch and Jumper Locations
PCB 11293 Rev. A is shown below.
Installation
CAUTION: Wear a grounding device and observe electrostatic discharge precautions when setting the 6-
position DIP switch. Failure to observe this caution could result in damage to the media converter.

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Set 6-position DIP Switch
(SW2)
The 6-position DIP switch (SW2) is located
located on the edge of the PCB. Use a
small flat blade screwdriver to set the
recessed switches. See below for the
individual switch settings.
1. Auto-Negotiation
up Enables Auto-Negotiation on the copper port.
Advertises the setting of switches 2 and 3.
down Disables Auto-Negotiation on the copper port. Forces the setting of switches 2 and 3.
2. Speed (only functions whan Switch 1 is Down)
up 100 Mb/s operation on the copper port.
down 10 Mb/s operation on the copper port.
3. Copper Mode Duplex (only functions whan Switch 1 is Down)
up full duplex operation on the copper port.
down half duplex operation on the copper port.
(Parallel detection only with Auto-Negotiation enabled and linked to nonnegotiatingdevice)
up Parallel detects in IEEE standard half duplex.
down Non-standard full duplex.
4. Fiber Mode
up Forces full duplex operation on the fiber port.
down Forces half duplex operation on the fiber port.
5. Far-End Fault (FEF)
up FEF Enabled
down FEF Disabled
6. Link Pass Through (LPT)
up LPT Enabled
down LPT Disabled

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Hardware/Software Mode Jumper (J4)
The jumpers are located on the media converter circuit board. Use a small
needlenosed pliers or a similar tool to set the jumper.
The Hardware/Software jumper is labeled “H” for hardware and “S” for
software.
Software: The media converter mode is determined by the most-recently
saved on-board settings.
Hardware: The media converter mode is determined by the 6-position switch settings listed above.
Install the Slide-in-Module
To install the CBFTF10xx-105 media converter slide-in module:
1. Locate an empty installation slot on the PointSystem™ chassis.
2. Carefully slide the module into the installation slot, aligning the module with the installation guides.
3. Ensure that the module is firmly seated inside the chassis.
4. Push in and rotate the panel fastener screw to secure the module to the chassis front.

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Install the Twisted-Pair Copper Cable
Note: The AutoCross feature allows either MDI (straight-through) or MDI-X (crossover) cable
connections to be configured automatically, according to the network conditions.
1. Locate or build IEEE 803.2 compliant 10Base-T or 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 CBFTF10xx-10x 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.).
Install the Fiber Cable
1. Locate an IEEE 803.2 compliant 100Base-FX fiber cable with male, two-stranded TX to RX connectors
installed at both ends.
2. Connect the fiber cables to the CBFTF10xx-10x as described:
•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 cables to the other device (another media converter, hub, etc.) as described:
•Connect the male TX cable connector to the female RX port.
•Connect the male RX cable connector to the female TX port.

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Operation
Status LEDs
Use the status LEDs to monitor media converter operation in the network.
FDPX (Fiber Duplex)
ON = full duplex fiber connection.
OFF= half duplex fiber connection.
FLNK (Fiber Link)
ON = Fiber link connection.
Blinking = Fiber network activity.
PWR (Power)
ON = Power applied to chassis card.
TSPD (Twisted-Pair Speed)
ON = 100 Mb/s.
OFF = 10 Mb/s.
TDPX (Twisted Pair Duplex)
ON = full duplex copper connection.
OFF = half duplex copper connection.
TLNK (Twisted Pair Link)
ON = Copper link connection.
Blinking = Copper network activity.

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Product Features
AutoCross™
The AutoCross feature detects and configures the twisted-pair copper port on the CBFTF10xx-10x media
converter to the correct straight-through (MDI) or crossover (MDI-X) configuration. This feature allows
either MDI or MDI-X cable to connect the media converter to devices such as hubs, transceivers, or
network interface cards (NICs). (No operator intervention required.)
Link Pass-Through
The Link Pass-Through (LPT) feature allows the media converter to monitor both the fiber and copper RX
(receive) ports for loss of signal. In the event of a loss of an RX signal (1), the media converter will
automatically disable the TX (transmit) signal (2), thus, “passing through” the link loss (3). The far-end
device is automatically notified of the link loss (4), which prevents the loss of valuable data unknowingly
transmitted over an invalid link.
LPT with Valid Link ID: When a LPT condition occurs the Link/Activity LED for the port that still would
have a link up condition, but is being forced into a link down, blinks on and off every 2 seconds while
the LPT condition exists.
Far-end Fault
When a fault occurs on an incoming fiber link (1), the media converter transmits a Far-End Fault signal
on the outgoing fiber link (2). In addition, the Far-End Fault signal also activates the Link Pass-Through,
which, in turn, disables the link on the copper portion of the network (3) and (4).
Auto-Negotiation
The Auto-Negotiation feature allows the CBFTF10xx-10x media converter to automatically configure
itself to achieve the best possible mode of operation over a link. The media converter will broadcast its
speed (10 Mb/s or 100 Mb/s) and duplex capabilities (full or half) to the other devices and negotiates
the best mode of operation. Auto-Negotiation allows quick and easy installation because the optimal
link is established automatically. No user intervention is required to determine the best mode of
operation.
In a scenario where the media converter is linked to a non-negotiating device is a case where you may
want to disable Auto-Negotiation. In this instance, the mode of operation will drop to the least common
denominator between the two devices (e.g. 100 Mb/s, half duplex). Disabling this feature lets you force
the connection to the best mode of operation.

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Parallel Detection
Parallel detection is the method used to link when an auto negotiating port detects a link partner that is
in forced mode and therefore cannot participate in the auto negotiating process. Parallel Detection can
be set to IEEE Standard half duplex, or the non-standard full duplex. Switch settings for parallel
detection are valid in hardware or software mode, only when Auto-Negotiation is enabled.
Per the IEEE method, an auto negotiating port that detects a forced link partner should drop to the
detected speed (10Mbs or 100Mbs) and default to HALF DUPLEX.
The CBFTF-10xx-10x allows bypassing the IEEE method by setting the parallel detection default mode to
half or full duplex via DIP switch 3.
Full Duplex Network
In a full duplex network, maximum cable lengths are determined by the type of cables that are used. See
the cable specifications for the different CBFTF10xx-10x models.
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-line at:
https://www.transition.com.
SNMP
See the on-line documentation that comes with Transition Networks FocalPoint™ software for
applicable commands and usage.
Use SNMP at an attached terminal or at a remote location to monitor the converter by monitoring:
• Media converter power
• Serial and part number
• Port number
• Copper and fiber link status
• Copper and fiber duplex mode
• Copper port speed
• Hardware switch setting
Also, use SNMP to enter network commands that do the following:
• Enable/disable Auto-Negotiation on copper
• Force 10Mb/s or 100Mb/s on copper
• Force full duplex or half duplex on copper
• Force full duplex or half duplex on fiber
• Enable/disable Far-End Fault on fiber
• Enable/disable Link Pass Through

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Cable Specifications
The physical characteristics must meet or exceed the IEEE 802.3™ specifications.
Fiber Cable
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
CBFTF1011-105, CBFTF1013-105 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
CBFTF1012-105 single mode
Fiber-optic Transmitter Power: min: -18.0 dBm max: -7.0 dBm
Fiber-optic Receiver Sensitivity: min: -32.0 dBm max: -3.0 dBm
Link Budget: 14.0 dB
CBFTF1014-105 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
CBFTF1015-105 single mode
Fiber-optic Transmitter Power: min: -5.0 dBm max: -2.0 dBm
Fiber-optic Receiver Sensitivity: min: -34.0 dBm max: -7.0 dBm
Link Budget: 29.0 dB
CBFTF1016-105 single mode
Fiber-optic Transmitter Power: min: -4.0dBm max: -2.0 dBm
Fiber-optic Receiver Sensitivity: min: -36.0 dBm max: -3.0 dBm
Link Budget: 32.0 dB
CBFTF1017-105 single mode
Fiber-optic Transmitter Power: min: -5.0 dBm max: -0.0 dBm
Fiber-optic Receiver Sensitivity: min: -34.0dBm max: -7.0 dBm
Link Budget: 29.0 dB
CBFTF1019-105 single mode
Fiber-optic Transmitter Power: min: -15.2 dBm max: -8.0 dBm
Fiber-optic Receiver Sensitivity: min: -32.5 dBm max: -3.0 dBm
Link Budget: 17.3 dB
CBFTF1029-105, CBFTF1029-106 single mode
Fiber-optic Transmitter Power: min: -14.0 dBm max: -8.0 dBm
Fiber-optic Receiver Sensitivity: min: -33.0 dBm max: -3.0 dBm
Link Budget: 19.0 dB