40 – Getting Started
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Figure 17: Adapter and Connector
In Figure 17, the top part is a connector insert (for example, FC or SC). The bottom part is a
UCA.
Use care when removing and cleaning UCAs. There are two types of adapters, FC/PC and
FC/APC (Figure 18). Do not interchange the two types. The UCAs on the source optics module
are of the same type: FC/PC. The adapters on the receiver control module are both FC/APC.
The two types can be distinguished by observing the alignment slot on the connector end. In
FC/PC adapters, the slot points to the straight edge or side of the square. In FC/APC adapters,
the slot points to a corner. If an FC/PC adapter is installed on the control module, the FC/APC
ferrules do not mate properly, which leads to excessive losses.
FC/PC FOR SOM
FC/APC FOR CM
Viewed from threaded end.
As seen when installed in a module
Figure 18: Universal Connector Adapters
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