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RRU3931E
Installation Guide
Step 3 (Optional) If an RF port is not used, retain and waterproof the waterproof cap on the port.
Figure 1-31 Waterproofing a waterproof cap
(1) Waterproof cap
1.
2.
3.
4.
5.
Step 4 Connect the type N male connector at the other end of the RRU3931E RF jumper to the RF
port on the external antenna system. See
Figure 1-32 Connecting an RF jumper to the external antenna system
Issue Draft A (2016-03-30)
Verify that waterproof caps are not removed.
Wrap a layer of PVC insulation tape around the connector from bottom up.
Tightly wrap three layers of waterproof tape around the connector, with the first layer
from bottom up, the second layer from top down, and the third layer from bottom up.
Tightly wrap three layers of PVC insulation tape around the connector with the first layer
from bottom up, the second layer from top down, and the third layer from bottom up.
Bundle cable ties 3 mm to 5 mm away from the end of insulating tape.
NOTE
l Before wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice its
original length.
l Do not stretch the PVC insulation tape before wrapping.
l Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape
overlaps more than 50% of the preceding layer
l Ensure that the side with adhesive tape is covered on the wrapped tape.
l When cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm.
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(2) PVC insulation tape
Figure
1-32.
1 RRU3931E Installation Guide
(3) Waterproof tape
35
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