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2 - 26 ONline Ethernet 10BASE-FL Installation and Operation Guide
Example: Connecting a Thin Ethernet (10BASE2) Segment
Figure 2-9 shows a typical Thin Ethernet segment connected to an ONline
Concentrator through an IEEE 802.3 Repeater
.
Figure 2-9. Thin Ethernet Segment Connecting to ONline Using an
IEEE Repeater
To determine if the configuration in Figure 2-9 meets Ethernet distance
limitations for transceivers A and B:
1. Use 4200 meters as the maximum network diameter as defined by
the 802.3 specification.
2. Subtract the fiber equivalent distance of 420 m for the signal
externally entering the 10BASE-T Module from Transceiver B and 230
meters for the signal exiting the 10BASE-FL Module within the same
concentrator. (Ethernet Rule 4)
3. Subtract the fiber equivalent distance of 560 meters for the signal
externally entering the 10BASE-FL Module in the top concentrator,
and internally exiting a different port on the same 10BASE-FL Module.
4. Subtract the fiber equivalent distance (800 m) of the IEEE Repeater.
(Ethernet Rule 4)
Transceiver
100 m
200 m
1500 m
B
10BASE-T Transceiver (5101T-TP)
IEEE
Repeater
A
185 m
Thin Ethernet
10BASE-FL
Backbone
Transceiver
Coaxial10BASE-FL
10BASE-T Module
10BASE-FL Module
10BASE-FL Module
50 m
Transceiver Cable
5101T-FL