Chapter 9 Connecting Optical Cables
Installation and Commissioning Manual
297
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Step 3
Disconnect the fiber-optic cables. If no fiber-optic cables are con-
nected, remove the protective cover from the plugs.
Step 4
Use an optical power meter to check the output power of the common
output ports.
Step 5
Blow off any accumulated dust or loose debris from the ferrules with
canned, oil-free compressed air.
Step 6
Use a video scope (as shown in
Figure 89
) to inspect the ports and to
ensure that the port connectors are clean. (See
Figure 90
for compar-
ison examples of clean and contaminated fiber endfaces).
Figure 89:
Video Scope
P
S
Note
Handle the connectors carefully, to avoid leaving fingerprints or
otherwise contaminating the ferrule endface.
P
S
Note
Do not use commercial, compressed air due to the risk of oil
contamination of the fiber-optic connectors and receptacles. Always
use canned, oil-free compressed air.
CAUTION
Never look directly into an optical fiber connector or into an
un-terminated receptacle during service operations by using optical
instruments, such as a magnifier or video scope, unless you are
absolutely certain that no laser radiation is being emitted from the
receptacle or the fiber.