Transition Networks SBFTF10xx-1xx Bedienungsanleitung

33404 Rev. G https://www.transition.com Page 1 of 18

User Guide

SBFTF10xx-1xx

Stand-Alone Media Converters

•Copper to Fiber

•10/100 Bridging (2 Ports)

•10/100Base-TX to 100Base-FX

•Auto-Negotiation

•Auto-MDI/MDIX

•Link Pass Through

•Far-End-Fault (FEF) Detection

•Automatic Link Restoration Extend network distance up to 120km

•Bridging devices will provide conversion and integration solutions for half and full-duplex environments

•10 Mbps or 100 Mbps on TP port

•Half or full-duplex on all ports including fiber

Contents

Introduction .................................................................................................................................................. 1

Ordering Information.................................................................................................................................... 2

Optional Accessories (sold separately) ......................................................................................................... 2

Installation .................................................................................................................................................... 3

Set the 6-position DIP Switch ................................................................................................................... 3

Connect the Twisted-Pair Copper Cable................................................................................................... 4

Connect the Fiber Cable ........................................................................................................................... 5

Power the Media Converter ..................................................................................................................... 5

Product Features ...................................................................................................................................... 6

Operation...................................................................................................................................................... 8

Status LEDs ............................................................................................................................................... 8

Half-Duplex Network ................................................................................................................................ 9

Cable Specifications................................................................................................................................12

Technical Specifications ..............................................................................................................................14

Troubleshooting..........................................................................................................................................15

Contact Us................................................................................................................................................... 16

Compliance Information .............................................................................................................................17

Declaration of Conformity ......................................................................................................................17

CE Mark................................................................................................................................................... 17

Record of Revisions..................................................................................................................................... 18

Introduction

Transition Networks SBFTF10xx-10x 2-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 SBFTF10xx-105 provides an interface between 10/100Base-TX ports and 100Base-FX ports, allowing

users 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.

Transition Networks SBFTF10xx-10x User Guide

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Ordering Information

SKU

Description

SBFTF1011-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-FX 1300nm multimode (ST)

[2 km/1.2 mi.] Link Budget: 11.0 dB

SBFTF1013-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-FX 1300nm multimode (SC)

[2 km/1.2 mi.] Link Budget: 11.0 dB

SBFTF1014-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-FX 1310nm single mode (SC)

[20 km/12.4 mi.] Link Budget: 16.0 dB

SBFTF1019-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-FX 1310nm single mode (LC)

[20 km/12.4 mi.] Link Budget: 17.3 dB

SBFTF1029-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-FX 1310nm TX/1550nm RX

single fiber single mode (SC) [20 km/12.4 mi.]. Link Budget: 19.0 dB

SBFTF1029-106

10/100Base-TX (RJ-45) [100 m/328 ft.]to 100Base-FX 1550nm TX/1310nm RX

single fiber single mode (SC) [20 km/12.4 mi.]. Link Budget: 19.0 dB

SBFTF1039-105

10/100Base-TX (RJ-45) 100 m/328 ft.] to 100Base-FX 1300nm multimode (LC)

[2 km/1.2 mi.] Link Budget: 11.0 dB

SBFTF1040-105

10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-X SFP Slot (empty)

*Typical maximum cable distance. Actual distance is dependent upon the physical characteristics of the

network installation.

**SBFTF1029-105/106 pair or -107/108 pair should be installed in the same network where one is the

local coverter and the other is the remote converter.

Power Supply Included. To order the corresponding country-specific power supply, add the extension

from the following list to the end of the SKU; -NA = North America, -LA = Latin America, -EU = Europe, -

UK = United Kingdom, -SA = South Africa, -JP = Japan, -OZ = Australia, -BR = Brazil.

Optional Accessories (sold separately)

SKU

Description

SPS-2460-SA

Stand-Alone Power Supply

SPS-2460-PS

Piggy-Back Power Supply

E-MCR-05

12-Slot Media Converter Rack with universal internal power supply 17 x 15 x 5 in.

RMS19-SA4-01

4-slot Media Converter Shelf

WMBL

Optional Wall Mount Brackets; Length: 4.7in. (119mm)

WMBV

Optional Vertical Mount Bracket; Length: 5.0 in. (127 mm)

WMBD

Optional DIN Rail Mount Bracket; Length: 5.0 in. (127 mm)

WMBD-F

Optional DIN Rail Mount Bracket (flat); Length: 3.3in. (84 mm)

SFP Modules

See the Transition Networks SFP webpage.

Transition Networks SBFTF10xx-10x User Guide

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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.

Set the 6-position DIP Switch

The 6-position switch is located located on the side of the media converter. Use a small flat blade

screwdriver to set the recessed switches. See below for the locations of the individual switches.

1. TP Auto-Negotiation

up Enables Auto-Negotiation on the copper port

down Disables Auto-Negotiation on the copper port. Forces the setting of switches 2 and 3

2. TP Duplex

(Only functions with switch 1 down)

up Full duplex operation on the copper port

down Falf duplex operation on the copper port

(Parallel detection only with Auto-Negotiation enabled and linked to nonnegotiating device)

up Parallel detects in IEEE standard half duplex

down Non-standard full duplex

3. TP Speed

(Only functions with switch 1 Down)

up 100 Mb/s operation on the copper port

down 10 Mb/s operation on the copper port

4. Fiber Mode

up Forces full duplex operation on the fiber port

down Forces half duplex operation on the fiber port

5. Link Pass Through (LPT)

up Enabled

down Disabled

6. Far-End Fault (FEF)

up Enabled

down Disabled

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Connect the Twisted-Pair Copper Cable

Ensure that the correct cable type is installed to support the highest speed and mode of operation to be

selected.

Although Category 3 cable is adequate for the 10Base-T installation, Category 5 cable is strongly

recommended, since Category 3 cable can not be used for 100Base-TX installation.

10Base-T / Ethernet Collision Domain

•If half-duplex cable is used, refer to the 5-Segment Rule before installing the 10Base-T twisted-

pair copper cable.

•If full-duplex cable is used, the 5-Segment Rule does not apply. The cable lengths are

constrained by the cable requirements.

100Base-TX / Fast Ethernet Collision Domain

•If half-duplex cable is used, refer to the 512-Bit Rule before installing the 100Base-TX twisted-

pair copper cable.

•If full-duplex cable is used, the 512-Bit Rule does not apply. The cable lengths are constrained by

the cable requirements.

Note: A Fast Ethernet collision domain can have one class 1 repeater or two class 2 repeaters.

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 SBFTF10xx-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.).

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Connect the Fiber Cable

100Base-FX / Fast Ethernet Collision Domain

•If half-duplex mode is used, refer to the 512-Bit Rule before installing the 100Base-FX fiber

cable.

•If full-duplex mode is used, the 512-Bit Rule does not apply. The cable lengths are constrained

by the cable requirements.

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 SBFTF10xx-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.

Power the Media Converter

Note: The external power supply provided with this product is UL listed by its manufacturer.

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. Connect the power adapter plug to AC power.

3. Verify that the media converter is powered by observing the Pwr LED is lit.

See the Transition Networks external power supply user guide for powering the media converter.

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Product Features

Rate Conversion

The media converter allows connection of 10Mb/s terminal devices on a 10Base-T legacy Ethernet

copper network to 100Mb/s terminal devices on a 100Base-TX Fast Ethernet copper network and/or to

100Mb/s terminal devices on a 100Base-FX Fast Ethernet fiber network.

Auto-Negotiation

The Auto-Negotiation feature allows the SBFTF10xx-10x media converter to automatically configure

itself to achieve the best possible mode of operation over a link. The media converter broadcasts 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.

In a scenario where the media converter is linked to a non-negotiating device, the user 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.: 10 Mb/s, half-duplex). Disabling this feature lets you force

the connection to the desired speed and duplex mode of operation.

AutoCross

When the AutoCross feature is activated, it allows either straight-through (MDI) or crossover (MDI-X)

copper cables to be used when connecting to 10Base-T or 100Base-TX devices. AutoCross determines

the characteristics of the connection and automatically configures the unit to link up, regardless if the

copper cable is MDI or MDI-X configuration.

Link Pass-Through

The Link Pass-Through 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.

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 Link Pass-Through,

which, in turn, disables the link on the copper portion of the network (3) and (4).

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Distance Extension

The SBFTF10xx-10x media converter segments 10Base-T copper Ethernet and/or 100Base-TX copper

Fast Ethernet and 100Base-FX fiber Fast Ethernet collision domains.

In a half-duplex Ethernet or Fast Ethernet environment, the SBFTF10xx-10x media converter extends

network distances by segmenting collision domains so that the 5-Segment Rule or the 512-Bit Rule

applies separately to each collision domain.

In a full-duplex Ethernet or Fast Ethernet environment, the SBFTF10xx-10x media converter extends

network distances to the physical cable limitations imposed by the selected copper and fiber cables.

Automatic Link Restoration

This feature will restore the dropped link automatically, upon correcting the fault condition.

Congestion Reduction

The SBFTF10xx-10x media converter does not forward collision signals or error packets from one

collision domain to another, improving baseline network performance. In addition, the media converter

filters packets destined for local devices, also reducing network congestion.

Transition Networks SBFTF10xx-10x User Guide

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Operation

Status LEDs

Use the status LEDs to monitor the SGETF10xx-1xx media converter operation in the network.

LED

Description

Pwr

Power

ON = Power applied

OFF = Not powered

Fiber LEDs

LNK ACT

Link/Activity

ON Solid = Link established

FLashing = RX Data

(Duplex)

ON = Full Duplex

OFF = Half Duplex

Copper LEDs

LNK ACT

Link/Activity

ON Solid = Link established

FLashing = RX Data

(Duplex)

ON = Full Duplex

OFF = Half Duplex

100

(Speed)

ON = 100 Mbs

OFF = 10 Mbx

Transition Networks SBFTF10xx-10x User Guide

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Half-Duplex Network

512-Bit Rule – 100Base-TX or 100Base-FX

Use the 512-Bit Rule to calculate the 100Base-TX or 100Base-FX half-duplex collision domain.

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. Note: The 512-Bit Rule applies separately to each collision domain.

To calculate the round-trip delay for a collision domain:

1. Find the collision domain, i.e., the longest path between any two terminal devices (e.g., terminal,

switch, and/or router).

2. Calculate the round-trip delay in bit-times for each length of cable.

3. Determine the bit-time values for each device (see below).

Class I hub 140 BT

Class II hub 92 BT

Terminal/router 50 BT

1 meter TP cable 1.11 BT

1 meter fiber cable 1 BT

Fast Ethernet switch 50 BT

SBFTF10xx-10x 50 BT

4. Add the bit-time values for each length of cable and the bit-times for each device.

100Base-TX twisted-pair example

In the example below, the SBFTF10xx-10x 2-Port bridging media converter acts as a switch. In this case,

the collision domain bound by the media converter on one end and a terminal on the other end.

Since the total of the bit-times in this example is less than 512 (see table below), the path is good.

Sum of the bit-times for the example collision domain:

Media converter = 50.0 BT

100 m TP cable (100m x 1.11 BT/m) = 111.0 BT

Two Class II hubs (2 x 92) = 184.0 BT

Two 10 m TP cables (2 x 10m x 1.11 BT/m) = 22.2 BT

Terminal = 50.0 BT

Total = 417.2 BT

Transition Networks SBFTF10xx-10x User Guide

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100Base-TX fiber Example

The drawing below illustrates a collision domain where two media converters are connected via fiber

cable.

Since the total of the bit-times in this example is less than 512 (50BT + 400BT + 50BT = 500BT) the path

is good.

5-Segment Rule – 10Base-T

Use the 5-Segment Rule to calculate the 10Base-T half-duplex collision domain. The 5-Segment

Rule states that a transmission path of a collision domain can consist of not more than 5 segments.

A “collision domain” and a “segment” are defined as follows:

A collision domain is the longest path in a 10Base-T network between any two terminal devices, e.g.,

a terminal, switch, or router. The SBFTF10xx-10x media converter is also a terminal device.

A segment is a cable connection between any two network interfaces within a collision domain.

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