User manual

Publication ENET-UM001I-EN-P - January 2010 211
Fiber Cable and LC Connector Appendix B
EXAMPLE
In the example shown here, the channel insertion loss is calculated for an optical channel based on the
following factors:
• 1 dB/km fiber
• 0.75 dB per adapter
Note that in this example, the end connectors are not factored in the calculations.
The maximum power budget for this example is 12.8 dB for 62.5/125 um fiber. Therefore, the channel
insertion loss for the exa
mple of 3.5 dB is less than the maximum power budget.
Fiber 1 dB/km Fiber 1 dB/kmFiber 1 dB/km
0.75 dB0.75 dB
1km0.75km 0.25km
0.75 dB 0.75 dB 0.75dB 0.25 dB1 dB
++++
Total channel insertion loss = 3.5 db