IOM Port Specifications
A-4 Specifications and Regulatory Compliance
Fiber Port Specifications
The specifications shown in Table A-10 are for 100BASE-FX fiber ports (Multimode) and meet or
exceed the IEEE 802.3z-1998 standard.
Operating Range
The maximum drive distance (up to 2 km) depends on the quality of the installed multimode fiber
optic cable segment. Use the Link Power Budget in Table A-10 to calculate the maximum cable
length of the attached segment. The Link Power Budget must not exceed those specified in
Table A-10.
Copper Port Specifications
The following specifications are for 10/100BASE-TX RJ45 ports.
Table A-10 Fiber Port Optical Specifications
Item 62.5 µm MMF 50 µm MMF
Transmit Power (minimum) -20 dBm -23.5 dBm
Receive Sensitivity -31 dBm -31 dBm
Link Power Budget 11 dBm 7.5 dBm
Table A-11 Copper Port Specifications
Item Specification
Supported Cable:
Type
Maximum Length
Copper, Category 5 UTP
Up to 100 meters
Connector RJ45
Data Rate 10/100BASE-TX operation only
Automatic crossover detection
TX Output impedance 100 ohms, typical at all frequencies between 1 MHz and 125 MHz
RX Input impedance 100 ohms, typical at all frequencies between 1 MHz and 125 MHz
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