Fiber Cable

SBFTF10xx-10x

Half-Duplex Network -- Continued

Cable Specifications

100Base-TX Fiber Example

The physical characteristics must meet or exceed IEEE 802.3™ specifications.

The drawing to the right 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.

400 meters fiber cable = 400BT

media converter	media converter
= 50BT	= 50BT

Bit Error Rate:

single mode fiber (recommended): Multimode fiber (recommended): Multimode fiber (optional):

SBFTF1011-100

SBFTF1013-100

Fiber Optic Transmitter Power:

Fiber Optic Receiver Sensitivity:

Link Budget:

<10-9

9µm 62.5/125 µm

100/140, 85/140, 50/125 µm

1300 nm multimode
1300 nm multimode
min: -19.0 dBm	max: -14.0 dBm
min: -30.0 dBm	max: -14.0 dBm
11.0 dB

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 no 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.

SBFTF1014-100

Fiber-optic Transmitter Power:

Fiber-optic Receiver Sensitivity:

Link Budget:

SBFTF1015-100 (long haul)

Fiber-optic Transmitter Power:

Fiber-optic Receiver Sensitivity:

Link Budget:

SBFTF1016-100(extra long haul)

Fiber-optic Transmitter Power: Fiber-optic Receiver Sensitivity:

1310 nm single mode
min: -15.0 dBm	max: -8.0 dBm
min: -31.0 dBm	max: -8.0 dBm
16.0 dB
1310 nm single mode
min: -8.0 dBm	max: -2.0 dBm
min: -34.0 dBm	max: -7.0 dBm
26.0 dB
1310 nm single mode
min: -5.0 dBm	max: 0.0 dBm
min: -34.0 dBm	max: -7.0 dBm

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

10Base-T Twisted-Pair Example

The example to the right illustrates applying the 5-Segment Rule. The cable between each network device (media converter, Hub, or Terminal) is numbered as a “segment”.

Note that the longest transmission path (from the media converter at the top to the terminal at the bottom) is 5 segments. Therefore, the network in this example complies with the 5-Segment Rule.

NOTE: The 5-Segment Rule must be applied separately to each 10Base-T collision domain.

media converter

100meters TP

cross-over

100 meters TP	hub
straight-through

100meters TP

cross-over

100 meters TP	hub
straight-through
3	3

100 meters TP cross-over

100 meters TP	hub
straight-through
4	4

100 meters TP cross-over

100 meters TP		hub
100 meters TP
straight-through
5
5

Link Budget:

SBFTF1017-100(long wave length)

Fiber-optic Transmitter Power:

Fiber-optic Receiver Sensitivity:

Link Budget:

SBFTF1018-100

Fiber-optic Transmitter Power:

Fiber-optic Receiver Sensitivity:

Link Budget:

SBFTF1019-100

Fiber-optic Transmitter Power:

Fiber-optic Receiver Sensitivity:

Link Budget:

29.0 dB
1550 nm single mode
min: -5.0 dBm	max: 0.0 dBm
min: -34.0 dBm	max: -7.0 dBm
29.0 dB
1300 nm multimode
min: -19.0 dBm	max: -14.0 dBm
min: -33.5 dBm	max: -14.0 dBm
1310 nm single mode
min: -15.2 dBm	max: -8.0 dBm
min: -32.5 dBm	max: -3.0 dBm
17.3 dB

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