Nortel Networks 893-862-B Network Card User Manual


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6 893-862-B
BayStack Single Mode Fiber Media Adapter
The optical power budget for the single-mode fiber media
adapter is shown in T
able 1. Power loss in the link cannot exceed
the value for the type of fiber optic cable you are using.
Only in-line fiber-to-fiber connections (a connection between
two fibers terminated with fiber connectors, using a fiber-to-fiber
connector) count against the optical power budget. The loss in a
fiber connection at the ends of the link is included in the optical
power budget and does not count as an in-line connection.
Table 3. Single-mode fiber optical power budget
Parameter 9/125
µ
m
Transmitted power (average) –29.0 dBm
Receiver sensitivity (average) –35.5 dBm
Optical power budget 6.5 dB
NOTE:
Your fiber connection must meet the optical
power budget and the Ethernet repeater rules for your
network.
893-862-B SMF MDA Page 6 Monday, September 30, 1996 1:32 PM
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