2 - 12 ONline Ethernet 10BASE-FB Module Installati on a n d Operation Guide
Maximum Link Distance Calculation
The following examples use th e information provided in the prev ious pages
to calculate the maximum allowable fiber optic link distance between two
ports.
Example: 1700 Meter Fiber Link With Mechanical Splice
In the following example, two ONli ne concentrators are connected using
10BASE-FB Module ports.
Figure 2-1 shows an example of a 1700 meter fiber link with a mechanical
splice using 62.5/125 fiber cable
.
Figure 2-1. 1700 Meter Fiber Link With Mech anical Splice
To calculate the maximum link distance:
1. Use Table 2-3 to determine the optical po wer budget for 62.5/125
cable (10.0 dB).
2. Use Table 2-6 to determine the worst case loss for a mechanical splice
(1.0 dB).