Installation Guide

Table Of Contents
2-61
Cisco Aironet 1560 Series Outdoor Access Point Hardware Installation Guide
Chapter 2 Installing the Access Point
Connecting a Fiber-optic Cable to the AP
You can connect the fiber-optic networking cable to the SFP port (labeled '4' on the base of the AP). The
small form-factor pluggable (SFP) transceiver module is used to connect the cable to the SFP port. The
SFP port provides both Power-over-Cable and backhaul over fiber options. To install the SFP transceiver
module and the cable, follow this procedure:
Step 1 Ensure that all power sources have been disconnected from the access point.
Step 2 Remove the covering plug from the SFP port by following the guidelines given in this step.
The SFP port covering plug is designed to be removed only once, and then be replaced with the SFP
adapter. The plug does not have a rubber O-ring, but is fixed in place using a sealant on the threads at
manufacturing. While removing the plug, you need to ensure that its hex bolt-head does not get stripped.
For this:
a. Place the AP on it's back (resting on the heat fins) on a solid, but padded surface, to avoid scratching
the paint.
b. Pressing down with your hand on the face of the AP and holding the AP firmly in place, proceed to
the next step.
c. Use a 5/8” (16 mm) 6-point socket wrench to loosen the hex bolt-head SFP port plug. Firmly and
carefully, turn the socket wrench counter-clockwise to loosen the plug. This requires a torque of
25 ft-lb (34 Nm).
Though not ideal, a 5/8” (16 mm) 12-point socket wrench can be used too. A crescent wrench is to
be used only if the socket wrenches are not available. Do not use a pipe or monkey wrench for this
task, as it will strip the hex bolt-head.
Step 3 Insert the SFP module into the SFP port, and ensure that it latches properly.
Step 4 Loosen the cable gland’s nut (round end of the cable gland) by turning counterclockwise, but do not
remove.
Step 5 Thread the fiber optic cable, from its unterminated end, into the cable gland. See Figure 2-42 and
Figure 2-43.
Thread the cable through the gland all the way till the gland is near the SC or LC optic fiber connectors.
The cable gland’s nut must remain loose at this time.
Note The SC or LC optic fiber connectors are too big to pass through the cable gland. That is the reason why
you need to thread the cable through the gland from the unterminated end (even if the cable is quite long).
Step 6 Insert the SC or LC optic fiber connector-end of the cable, into the SFP module adapter. Do not attach
the cable gland to the adapter yet. See Figure 2-44.
Step 7 Insert the SC or LC optic fiber connector into the SFP module and ensure that it latches into place. See
Figure 2-44.
Step 8 Add sealant or tape around the adapter's pipe thread, and then it screw into the AP chassis.
Step 9 Keeping the cable gland nut loose, carefully screw the threaded end of the cable gland into the SFP
module adapter and hand-tighten. Use an adjustable wrench to tighten the threaded end of the cable
gland to 6-7 lb.ft (8.1 to 9.5 Nm).
Step 10 Tighten the cable gland nut until it is properly fastened around the fiber optic cable. Use an adjustable
or open-end wrench to tighten to 2.7 to 3.2 lb.ft (3.66 to 4.34 Nm).