3Com 5102M-FBP, 5104M-FB1, 510M-FBP Example 1700 Meter Fiber Link With Mechanical Splice

Maximum Link Distance Calculation

The following examples use the information provided in the previous 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 ONline 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 Mechanical Splice

To calculate the maximum link distance:

1.Use Table 2-3 to determine the optical power 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).

2 - 12 ONline Ethernet 10BASE-FB Module Installation and Operation Guide