Bay Technical Associates BayStack Fiber Media Adapter User Manual
8
893-863-A
Fiber Optic Cable Length Limitations
The 10BASE-F standard permits you to use fiber optic cables up
to 2000 meters long. However, the fiber connection must meet
the following criteria:
to 2000 meters long. However, the fiber connection must meet
the following criteria:
•
Optical power budget (shown in Table 3)
•
Ethernet repeater rules
For more information about simple rules for Ethernet network
compliance, refer to
compliance, refer to
Using the BayStack 10BASE-T Hubs
.
The optical power budget is shown in Table 3. Power loss in the
link cannot exceed the value for the type of fiber optic cable you
are using.
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 are included in the optical
power budget and does not count as an in-line connection.
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 are included in the optical
power budget and does not count as an in-line connection.
Table 3. 10BASE-FL RDN Media Adapter Power Budget
Parameter
62.5/125
µ
m
50/125
µ
m
Transmitted power (average)
–20 dBm
–25.7 dBm
Receiver sensitivity (average)
–32.5 dBm
–32.5 dBm
Optical power budget
12.5 dB
6.8 dB