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INSTALLATION
2.8.1 Connecting Twisted Pair Cabling
To attach a cable to an RJ45 port, insert the RJ45 connector on the cable
into an RJ45 port on the CM, as shown in
Figure 2-8 Attaching Cable To An RJ45 Port
2.8.2 Connecting Fiber Optic Cabling
When connecting a fiber optic cable to a CM consider the following:
Fiber optic link segments with Stab and Twist (ST) connectors attach
•
to ST ports much like BNC connectors attach to BNC ports. The
connector is inserted into the port with the alignment key on the
connector inserted into the alignment slot on the port. The connector
is then turned to lock it down.
The physical communication link consists of two strands of fiber optic
•
cabling. The Transmit strand (Tx) at one end connects to the Receive
(Rx) port at the other end, and vice versa.
It is recommended that you label fiber optic cable to indicate which
•
end of a fiber strand connects to a Receive port and which end connects
to a Transmit port. By using such a labeling scheme, you can eliminate
the possibility of connecting devices incorrectly.
Dust, dirt, and other contaminants on the ends of the fiber optic
!
strands may create data-transmissions problems. If the ends
become dirty, clean them with isopropyl alcohol using a soft,
CAUTION
clean, lint-free cloth.
2-10
MCC-CRIO
PWR
P1
16 Mb
RI
P
1
Figure
2-8.
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