Cabletron Systems E2100, E1100, E3100 manual Fiber Optic Interface Fiber Optic Ports

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:		ST fiber optic ports
Parameter	Typical	Worst	Worst	Typical
	Value	Case	Case	Budget
Receive			Budget
Sensitivity:	-30.5 dBm	-28.0 dBm	—	—
Peak Input
Power:	-7.6 dBm	-8.2 dBm	—	—
Transmitter Power:
50/125 μm fiber:	-13.0 dBm	-15.0 dBm	13.0 dB	17.5 dB
62.5/125 μm fiber: -10.0 dBm		-12.0 dBm	16.0 dB	20.5 dB
100/140 μm fiber:	-7.0 dBm	-9.0 dBm	19.0 dB	23.5 dB
Error Rate:		Better than 10-10bit 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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