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What are the key features of the TRANSITION NETWORKS CBFTF1019-105 media converter?
The TRANSITION NETWORKS CBFTF1019-105 media converter has the following features:
• 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
What are the ordering options for the TRANSITION NETWORKS CBFTF10xx-1xx series, which includes the CBFTF1019-105 model?
| 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 |
How do I set the 6-position DIP Switch (SW2) on the TRANSITION NETWORKS CBFTF1019-105?
The 6-position DIP switch (SW2) is located on the edge of the PCB. Use a small flat blade screwdriver to set the recessed switches. Wear a grounding device and observe electrostatic discharge precautions when setting the switch.
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 when 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 when 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 non-negotiating device)
• 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
How do I set the Hardware/Software Mode Jumper (J4) on the TRANSITION NETWORKS CBFTF1019-105?
The J4 jumper is located on the media converter circuit board and is labeled “H” for hardware and “S” for software. Use a small needlenosed pliers or a similar tool to set the jumper.
• Software Mode (Jumper on ‘S’ pins): The media converter mode is determined by the most-recently saved on-board settings.
• Hardware Mode (Jumper on ‘H’ pins): The media converter mode is determined by the 6-position DIP switch settings.
How do I install the TRANSITION NETWORKS CBFTF1019-105 slide-in-module into a chassis?
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.
How do I install the twisted-pair copper cable on the TRANSITION NETWORKS CBFTF1019-105?
The AutoCross feature allows either MDI (straight-through) or MDI-X (crossover) cable connections to be configured automatically.
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.).
How do I install the fiber cable on the TRANSITION NETWORKS CBFTF1019-105?
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 media converter 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.
What do the status LEDs on the TRANSITION NETWORKS CBFTF1019-105 indicate?
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.
What is the AutoCross feature on the TRANSITION NETWORKS CBFTF1019-105?
The AutoCross feature detects and configures the twisted-pair copper port on the 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), with no operator intervention required.
How does the Link Pass-Through (LPT) feature work on the TRANSITION NETWORKS CBFTF1019-105?
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, the media converter will automatically disable the TX (transmit) signal, thus, “passing through” the link loss. The far-end device is automatically notified of the link loss, which prevents the loss of valuable data unknowingly transmitted over an invalid link.
LPT with Valid Link ID: When an 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.
What is the Far-End Fault feature on the TRANSITION NETWORKS CBFTF1019-105?
When a fault occurs on an incoming fiber link, the media converter transmits a Far-End Fault signal on the outgoing fiber link. 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.
How does the Auto-Negotiation feature work on the TRANSITION NETWORKS CBFTF1019-105?
The Auto-Negotiation feature allows the 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, 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.
What is Parallel Detection on the TRANSITION NETWORKS CBFTF1019-105?
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 converter allows bypassing the IEEE method by setting the parallel detection default mode to half or full duplex via DIP switch 3.
What is the 512-Bit Rule for half-duplex networks using the TRANSITION NETWORKS CBFTF1019-105?
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.
What functions can be monitored and controlled via SNMP with the TRANSITION NETWORKS CBFTF1019-105?
Using SNMP, you can monitor the converter for:
• 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
What are the fiber cable specifications for the TRANSITION NETWORKS CBFTF1019-105 and related models?
The physical characteristics must meet or exceed the IEEE 802.3™ specifications.
General Fiber Specifications:
• 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
Model Specific Specifications:
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
What are the copper cable specifications for the TRANSITION NETWORKS CBFTF1019-105?
The maximum copper cable distance is 100 meters.
Category 3: (Minimum requirement for 10 Mb/s operation)
• Gauge: 24 to 22 AWG
• Attenuation: 11.5 dB/100m @ 5-10 MHz
Category 5: (Minimum requirement for 100 Mb/s operation)
• Gauge: 24 to 22 AWG
• Attenuation: 22.0 dB/100m @ 100 MHz
Additional requirements:
• Straight-through (MDI) or crossover (MDI-X) twisted-pair cable must be used.
• Shielded twisted-pair (STP) or unshielded twisted-pair (UTP) 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.
What are the technical specifications for the TRANSITION NETWORKS CBFTF1019-105?
| Standards | IEEE Std. 802.3u, 802.3x |
| Data Rate | 10 Mbps; 100 Mbps |
| Weight | 1 lbs. [0.45 kg] |
| Power Consumption | 3 watts |
| Max. Packet Size | 2048 bytes untagged bytes 2044 bytes tagged bytes |
| Filtering & Forwarding | 14,880 pps for Ethernet; Rate 148,800 pps for Fast Ethernet |
| Dimensions | Width: 0.86″ [22 mm] x Depth: 5.0” [127 mm] x Height: 3.4″ [86 mm] |
| Power Consumption | 4.0 Watts |
| Environment | See chassis specifications |
| Regulatory Compliance | FCC Class A, CISPR22/EN55022 Class A, EN55024, EN61000, CE Mark |
| MTBF | Greater than 250,000 hours (MIL-HDBK-217F) Greater than 687,500 hours (Bellcore7 V5.0) |
| Warranty | Lifetime |
How do I troubleshoot the TRANSITION NETWORKS CBFTF1019-105?
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 (power) LED lit?
• NO:
• Is the power cord properly installed in the media converter and at the external power source?
• Does the external power source active?
• YES: Proceed to the next step.
2. Is the TLNK (copper link) LED lit?
• NO:
• Check the copper cables for proper connection and pin assignment.
• YES: Proceed to the next step.
3. Is the FLNK (fiber-pair link) LED lit?
• NO:
• Check the fiber cables for proper connection.
• Verify that the TX and RX cables are connected to the RX and TX ports, respectively on the 100Base-FX device.
• YES: Proceed to the next step.
4. Is the TPSD (twisted-pair speed) LED lit?
• NO (Off): The media converter has selected 10Mb/s operation.
• If the speed is not correct, disconnect and reconnect the twisted pair cable to restart the initialization process.
• YES (On): The media converter has selected 100Mb/s operation.
• If the speed is not correct, disconnect and reconnect the twisted pair cable to restart the initialization process.
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