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ページを印刷するFDDI Module Overview
The single-mode transceiver provides connectivity to single-mode FDDI fiber for distances up to
6.2 miles (10 kilometers). The connector is a simplex FC-type interface that accepts standard
8.2 to 10/125 micron ( 0.5) single-mode fiber-optic cable.
The multimode connectors are FDDI-standard physical (PMD) connectors. The connectors accept
FDDI standard 62.5/125 micron multimode fiber-optic cable using the media interface connector
(MIC). The MIC can also accept alternate cable sizes, such as 50, 85, or 100-micron multimode
fiber. Use care when using alternate fiber sizes, to avoid violating optical power budget restrictions.
The multimode/multimode applique also provides a DIN port for connecting an optional optical
bypass switch, which allows the light signal to pass directly from the receive port to the transmit
port. When this optical bypass is used, the signal is not repeated, and significant signal loss may
occur when transmitting to stations at maximum distances.
Figure 2
A
B
Faceplate
4 Installing and Upgrading the CSC-C2FCIT FDDI Card and Appliques
Multimode/Multimode—APP-LMM
PHY-A
RING A
RING B
PHY-B
N
O
LEDs
D
E
16-pin DIN connector
EDS
ENDEC
EDS
ENDEC
Component side view
P4
D
P3
A
Cables to FDDI
controller card
P2
B
P1
C