Optical Power Loss Through Connectors
When calculating optical power loss in ATM connections, you must take into account the number and
types of connectors used. In your calculation, use the average power loss for connectors with physical
and non-physical contacts as shown in Table 13.
It is recommended that high-quality, low-loss connectors be used in your ATM connections.
Table 13. Optical Power Loss per Connector
Connector Type
Cable Size (microns)
Average Loss (dB)
Physical contact
62.5 to 62.5
0.4
50 to 50
0.4
100 to 100
0.4
62.5 to 50
4.8
50 to 62.5
0.0
62.5 to 100
0.0
100 to 62.5
4.72
9 to 9
0.35
Non-physical contact
62.5 to 62.5
0.7
50 to 50
0.7
100 to 100
0.7
62.5 to 50
5.0
50 to 62.5
0.3
62.5 to 100
0.3
100 to 62.5
4.9
202
IBM 8285 Nways ATM Workgroup Switch:
Installation and User’s Guide
Содержание 8285 Nways
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