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2 - 6 ONline Ethernet 10BASE-FB Module Installation and Operation Guide
Determining Maximum Fiber Link Distances
This section describes how to calculate the maximum allowable link
distances between two fiber ports. To do this, you must know the
following information:
❑ 10BASE-FB optical power budget
❑ Fiber cable diameter (for example, 50 micron, 62.5 micron)
❑ Fiber cable light loss/km (for example, 3 dB loss/km)
❑ Number of patch panel connections and link splices
ONline Ethernet Repeater Module (5102M-AUIF) 800
Incoming signal to AUI port 600
Outgoing signal from AUI port 200
ONline Ethernet BNC Module (5106M-BNC) 900
Incoming signal to BNC port 450
Outgoing signal from BNC port 450
ONline Ethernet Transceiver Module (5103M-AUIM) 0
3Com 10BASE-FB Star Coupler (9308S-FB) 180
10BASE-FB Star Coupler (9314S) 180
IEEE Repeater 800
Table 2-2. Equivalent Fiber Distances of LAN Products (Continued)
LAN Product
Equivalent Fiber
Distance (meters)