IBM Nways 8260, Installation Manual

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OC3/STM1 I/O Cards - Multimode
To use the technical information presented in this section to validate your link, see the
chapter on setting up a connection using fiber in the
WAN Module User's Guide.
Optical Power Budget
Table 16. Optical Power Budget for Port-to-Device Connections: Multimode Fiber (ATM Forum
V3.0)
Fiber Cable: Type
and Size Minimum
Transmitted
Power Maximum
Received
Power Optical
Power
Budget Maximum Link
Distance
Multimode 50/125
micron
NA 0.20
−
21 dB
−
30 dB 9 dB 2 km
(1.24 miles)
Multimode 62.5/125
micron
NA 0.275
−
20 dB
−
29 dB 9 dB 2 km
(1.24 miles)
Table 17. Optical Power Budget for Port-to-Port Connections: Multimode Fiber
Fiber Cable:
Type and Size Minimum
Transmitted
Power Maximum
Received
Power Optical
Power
Budget Maximum Link
Distance
Multimode
50/125 micron
NA 0.20
−
22.5 dB
−
30 dB 7.5 dB 2 km
(1.24 miles)
Multimode
62.5/125 micron
NA 0.275
−
19 dB
−
30 dB 11 dB 2.2 km
(1.36 miles)
Appendix A. Technical Information
29