4 Cabling the AC 800F
4-15
4.2.5 10BaseFL
This standard uses a star topology as well. Fiber optic cables are the transmission
medium used here. The maximum length of a fiber optic cable link is 4 km.
Transmission is done in the base band with a data rate of 10 MBit/s.
Topology star topology with active network concentrator
(star coupler)
Transmission medium gradient fiber with fiber diameter of 50/125 µm
(core/fiber)
Reachable distance / fiber optic
cable type
up to 4000 m with cable type 50/125
up to 20 km with mono mode fiber optic cable
(bridge required)
observe max. deliverable length, splicing may
be necessary
Maximum number of nodes depends on network concentrator and interface
boards
Minimum spacing between
network concentrator and node
minimum ready-made cable length: 1 m
Connection of nodes via optical transceiver at the AUI interface
Max number of network
concentrators per network
15 (50 with special re-timing modules)
Coupling with 10Base2 or
10Base5 segments
possible with special network concentrator
modules, see Section 4.2.11
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