Fiber Optic Interface (Fiber Optic Ports) - Cabletron Systems E1100 Series Installation Manual

MAKING NETWORK CONNECTIONS
• Length - The maximum fiber optic cable length is 2 km (6558
feet), if system budgets are met. However, IEEE 802.3 FOIRL
(Fiber Optic Inter-Repeater Link) specifications specify a
maximum of 1 km (3279 feet).

3.3.2 Fiber Optic Interface (Fiber Optic Ports)

Ex040 and Ex040-X:
Parameter
Receive
Sensitivity:
Peak Input
Power:
Transmitter Power:
50/125 m fiber: -13.0 dBm -15.0 dBm
62.5/125 m fiber: -10.0 dBm -12.0 dBm
100/140 m fiber: -7.0 dBm
Error Rate:
NOTE: The transmitter power levels and receive sensitivity levels given
above are Peak Power Levels after optical overshoot. A Peak Power Meter
must be used to correctly compare the values given above to those
measured on any port. If Power Levels are measured with an Average
Power Meter, add 3 dBm to the average power measurement to correctly
compare average power values to the peak power values.
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ST fiber optic ports
Typical Worst
Value Case
-30.5 dBm -28.0 dBm
-7.6 dBm -8.2 dBm
-9.0 dBm
Better than 10
Worst Typical
Case Budget
Budget
— —
— —
13.0 dB 17.5 dB
16.0 dB 20.5 dB
19.0 dB 23.5 dB
-10
bit error rate.