Huawei DBS3900 Installation Manual page 203

DBS3900 LampSite
Installation Guide
Ensure that the sleeve shrinks around the end of the pRRU3907 connector and that the upper
end of the sleeve and the connector end is 6 mm apart or less.
Step 5 Check the dustproof caps on antenna connectors. In outdoor scenarios, dustproof caps must be
waterproofed, as shown in Figure 9-23.
Do not remove dustproof caps from vacant antenna connectors.
Figure 9-23 Waterproofing a dustproof cap
(1) Dustproof cap
1.
2.
3.
4.
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Issue 08 (2016-05-30)
Verify 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) PVC insulation tape
9 Installing a pRRU3907 or pRRU3916
(3) Waterproof tape
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