Huawei DBS3900 Installation Manual page 205

DBS3900 LampSite
Installation Guide
Figure 9-25 Waterproofing a connector of an RF jumper
(1) PVC insulation tape
1.
2.
3.
4.
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Step 5 If a pRRU3916 with an external antenna is to be installed, do not remove the dustproof cap
from an unused RF port. Waterproof this RF port, as shown in Figure 9-26.
Figure 9-26 Waterproofing an RF port with a dustproof cap
(1) Dustproof cap
Issue 08 (2016-05-30)
Ensure that dustproof caps are not removed.
Wrap one layer of PVC insulation tape on each connector from bottom up.
Wrap three layers of waterproof tape on each connector, first from bottom up, then from
top down, and finally from bottom up. Wrap each layer of the tape around the connector
tightly.
Wrap three layers of PVC insulation tape on each connector, first from bottom up, then
from top down, and finally from bottom up. Wrap each layer of the tape around the
connector tightly.
When wrapping waterproof tape, stretch the tape evenly until it is twice of the original length. When
wrapping PVC insulation tape, do not stretch it.
Wrap each layer of tape around each connector tightly and neatly, and ensure that the adhesive
surface of each layer of tape overlaps more than 50% of the lower layer.
When cutting off a cable tie, reserve a surplus length of 3 mm (0.12 in.) to 5 mm (0.20 in.).
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(2) Waterproof tape
(2) PVC insulation tape
9 Installing a pRRU3907 or pRRU3916
(3) Waterproof tape
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