• When routing cables through tubes on the ground below the cabinet, put a 30 mm to 50 mm (1.18
in. to 1.97 in.) length of the tubes into the base of the cabinet but do not put the tubes into the
cabinet. Use waterproof tape or waterproof silicon gel to block both ends of the tubes and use
sheet metal tabs to secure the tubes to the cable holes in the base.
• When routing cables through tubes along a metal cable trough below the cabinet, do not put the
tubes into the base of the cabinet but cover the cable trough and connect the tubes to the cable
holes in the base.
• When routing RRU cables, ensure that the highest positions of the routes of all RRU cables
(except RF cables and AISG cables) are lower than the bottom of the RRU to prevent water from
entering the maintenance cavity of the RRU.
• Use clips to secure cables outdoors. For the method of installing a clip, see the installation guide
delivered with the clip.
• Arrange cables neatly along the routing direction and use clips to secure the cables.
• Determine the positions where the clips are installed according to the actual situation. For
example, 7/8" feeders are secured with clips at an interval of 1.5 m to 2 m (4.92 ft to 6.56 ft),
CPRI fiber optic cables and power cables are secured with clips at an interval of 1 m to 1.5 m
(3.28 ft to 4.92 ft). Ensure that the clips are evenly spaced and in the same direction.
• When fastening cables with a clip, ensure that the cables are aligned neatly and are routed
through the holes in the clip. Do not stretch the cables too tightly.
NOTE:
There are two types of clips: 3-hole clip and 6-hole clip, which are described as follows:
• A 3-hole clip is shown by illustration a in the following figure. It is often used to fasten feeders.
• A 6-hole clip is shown by illustration b in the following figure. It is often used to fasten power cables and CPRI fiber
optic cables.
Figure 1 Exterior of the clips
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