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2 - 20 ONline Ethernet 10BASE-FL Installation and Operation Guide
Because it is not always obvious which path between transceivers has the
greatest fiber equivalent distance, use Table 2-6 to help you determine the
equivalent distances.
10BASE-FL Backbone, Unshielded Twisted Pair to-the-Desk
Designing a network with unshielded twisted pair cabling to-the-desk is
similar to an all-10BASE-FL network because the cabling is star-wired in both
cases (see Figure 2-7). See the section in this chapter “10BASE-FL Backbone,
10BASE-FL to-the-Desk” for more information on all-10BASE-FL networks.
Table 2-6. Fiber Equivalent Distances Between Transceivers
Path
Total Fiber
Distance
Between
Transceivers
(meters)
Number of
Concentrators
(10BASE-FL
Modules)
Between
Transceivers
Equivalent
Fiber
Distance of
Concentrator
(meters)
Total
Fiber
Equivalent
Distance
(meters)
A-D 1700 4 2240 3940
A-E 1400 4 2240 3640
A-F 2200 4 2240 4440
D-E 900 3 1680 2580
D-F 1700 3 1680 3380
F-E 1400 3 1680 3080