• Short range (SR): multi-mode fibre-optic 50/125 μm or 62.5/125 μm with 2-3
km to telecommunication equipment (820 nm). Can also be used for back-to-
back applications.
• Medium-range (MR): single-mode fibre-optic 9/125 μm for back-to-back
applications with < 80 km distances (1310 nm).
• .Long range (LR): single-mode fibre-optic 9/125 μm for back-to-back
applications with < 110 km distances (1550 nm)
ST
ST
IO-connect or
IEC07000087-3-en.vsdx
1
2
IEC07000087 V3 EN-US
Figure 62: SR-LDCM layout with two PCI connectors and one I/O ST type
connector
IEC06000393 V3 EN-US
Figure 63: MR-LDCM and LR-LDCM layout with two PCI connectors and one
I/O FC/PC type connector
M12756-1 v11
Section 5 1MRK 505 382-UEN B
Communication set-up
76 Communication set-up 670/650 series 2.2
Application Guide
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