Cabletron Systems FDDI, Руководство пользователя

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Chapter 2: Network Requirements
2-2 7F06-02 FDDI SmartSwitch Interface Module User’s Guide
The link distance is up to 2 kilometers on the multimode fiber optic cable
as specified by ANSI MMF-PMD.
2.1.2 FPIM-02 and FPIM-04
The FPIM-02 has an RJ-45 connector supporting an Unshielded Twisted
Pair (UTP) connection. The FPIM-04 has an RJ-45 connector supporting
a Shielded Twisted Pair (STP) connection. The pinouts for both are listed
in Table 2-3.
The link distance is up to 100 meters on unshielded twisted pair cable as
specified by ANSI TP-PMD.
Table 2-2 Transmitter Power Parameters
Parameter Typical Value
Worst
Case
Worst
Case
Budget
Typical
Budget
50/125
µ
m
fiber
-13.0 dBm -15.0 dBm 13.0 dB 17.5 dB
62.5/125
µ
m fiber
-10.0 dBm -12.0 dBm 16.0 dB 20.5 dB
100/140
µ
m
fiber
-7.0 dBm -9.0 dBm 19.0 dB 23.5 dB
Error Rate Better than 10
-10
Table 2-3 FPIM-02 and FPIM-04 Pinouts
Pin Number Represents Pin Number Represents
1 T 5 NA
2 Transmit- 6 NA
3 NA 7
4 NA 8 Receive-